Qt Location QML 类型

概述

In short, the main QML types and their roles are as follows:

The Place instances hold information about the destination and surrounding objects, including displayable representations.
The Map enables the information contained in Place objects to be displayed, panned, zoomed, and so on.
The route is be determined by a plugin , with each routeSegment holding the navigation instructions, guided by the continuously updated current 定位 .

插件

Plugin s supply the data required to calculate routes and navigation instructions, and they are typically tied to a specific location-based service. For example, a plugin may allow connecting to a service that provides geocoding and routing information, which can be consumed by the application.

There may be various GeoServices plugins for various tasks, with some plugins providing more than one service. One QML Plugin instance must be created for each GeoService plugin. Plugins are required for routing and geocoding, maps, and places, however the default plugin handles all four of these services. A plugin may require online access or it may support on-board maps and data.

注意： Plugins may not provide features such as paging or relevance hints.

The following links provide more information about maps and places:

Maps and Navigation	Displaying maps and finding routes
Places	Searching for and managing points of interest

Common QML Types

Plugin	Type describes a Location based services plugin
PluginParameter	Type describes a parameter for a plugin

Maps QML Types

GeoJsonData	A model to represent, load and save GeoJSON documents
Map	Type displays a map
MapCircle	Type displays a geographic circle on a Map
MapCopyrightNotice	Item displays the current valid copyright notice for a Map element
MapItemGroup	Type is a container for map items
MapItemView	Used to populate Map from a model
MapPolygon	Type displays a polygon on a Map
MapPolyline	Type displays a polyline on a map
MapQuickItem	Type displays an arbitrary Qt Quick object on a Map
MapRectangle	Type displays a rectangle on a Map
MapRoute	Type displays a Route on a Map
cameraCapabilities	Type holds information about the camera capabilities for a specific map type
mapType	Type holds information about a map type

RouteModel	Type provides access to routes
RouteQuery	Type is used to provide query parameters to a RouteModel
route	Type represents one geographical route
routeManeuver	Type represents the information relevant to the point at which two routeSegments meet
routeSegment	Type represents a segment of a Route

Geocoding QML Types

GeocodeModel

Type provides support for searching operations related to geographic information

Places QML Types

Category	Type represents a category that a Place can be associated with
CategoryModel	Type provides a model of the categories supported by a Plugin
ContactDetails	Type holds contact details for a Place
EditorialModel	Type provides a model of place editorials
ExtendedAttributes	Type holds additional data about a Place
ImageModel	Type provides a model of place images
Place	Type represents a location that is a position of interest
PlaceSearchModel	Provides access to place search results
PlaceSearchSuggestionModel	Provides access to search term suggestions
ReviewModel	Type provides a model of place reviews
contactDetail	Type holds a contact detail such as a phone number or a website address
icon	Type represents the icon of a place
placeAttribute	Type holds generic place attribute information
ratings	Type holds place rating information
supplier	Holds data regarding the supplier of a place, a place's image, review, or editorial
user	Type identifies a user who contributed a particular Place content item

Alphabetical Listing of All QML Types

Category	Type represents a category that a Place can be associated with
CategoryModel	Type provides a model of the categories supported by a Plugin
ContactDetails	Type holds contact details for a Place
EditorialModel	Type provides a model of place editorials
ExtendedAttributes	Type holds additional data about a Place
GeoJsonData	A model to represent, load and save GeoJSON documents
GeocodeModel	Type provides support for searching operations related to geographic information
ImageModel	Type provides a model of place images
Map	Type displays a map
MapCircle	Type displays a geographic circle on a Map
MapCopyrightNotice	Item displays the current valid copyright notice for a Map element
MapItemGroup	Type is a container for map items
MapItemView	Used to populate Map from a model
MapPolygon	Type displays a polygon on a Map
MapPolyline	Type displays a polyline on a map
MapQuickItem	Type displays an arbitrary Qt Quick object on a Map
MapRectangle	Type displays a rectangle on a Map
MapRoute	Type displays a Route on a Map
MapView	An interactive map viewer component
Place	Type represents a location that is a position of interest
PlaceSearchModel	Provides access to place search results
PlaceSearchSuggestionModel	Provides access to search term suggestions
Plugin	Type describes a Location based services plugin
PluginParameter	Type describes a parameter for a plugin
ReviewModel	Type provides a model of place reviews
RouteModel	Type provides access to routes
RouteQuery	Type is used to provide query parameters to a RouteModel
cameraCapabilities	Type holds information about the camera capabilities for a specific map type
contactDetail	Type holds a contact detail such as a phone number or a website address
icon	Type represents the icon of a place
mapType	Type holds information about a map type
placeAttribute	Type holds generic place attribute information
ratings	Type holds place rating information
route	Type represents one geographical route
routeManeuver	Type represents the information relevant to the point at which two routeSegments meet
routeSegment	Type represents a segment of a Route
supplier	Holds data regarding the supplier of a place, a place's image, review, or editorial
user	Type identifies a user who contributed a particular Place content item