GeoViewController class final
A base class for all views that can display geographic content.
Subclasses can display the content in either 2D (ArcGISMapViewController) or 3D (SceneView). In an MVC architecture, this class and its subclasses represent the View tier. The Model tier is represented by GeoModel, which supplies the geographic content as a map (ArcGISMap) or a scene (ArcGISScene).
GeoViewController contains all the common operations and events that apply to displaying and working with maps and scenes. For example, you can change the viewable area by setting a Viewpoint, work with graphics in the GraphicsOverlay, and identify a GeoElement that displays in the view.
- Implemented types
- Implementers
Properties
- attributionText → String
-
The attribution text for the data that is currently displayed in the
GeoViewController.
no setter
- drawStatus → DrawStatus
-
The current drawing status of the content displayed in the
GeoViewController.
no setter
-
graphicsOverlays
→ List<
GraphicsOverlay> -
A collection of
GraphicsOverlayobjects used to display graphics on top of the view's content.no setter - grid ↔ Grid?
-
A coordinate system grid to display on top of the GeoViewController.
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- isAttributionTextVisible ↔ bool
-
True if attribution text is visible in the GeoViewController, false
otherwise.
getter/setter pair
-
True if the GeoViewController is animating a viewpoint change or a
navigation gesture is in progress, otherwise false.
no setter
- isWrapAroundEnabled → bool
-
True if continuous panning across the international date line is enabled
in the GeoViewController, false otherwise.
no setter
- labeling ↔ ViewLabelProperties
-
The view label properties.
getter/setter pair
-
onAttributionChanged
→ Stream<
String> -
Invokes the callback when the attribution text of the GeoViewController
changes.
no setter
-
onDrawStatusChanged
→ Stream<
DrawStatus> -
Invokes the callback when the draw status of the GeoViewController
changes.
no setter
-
onLayerViewStateChanged
→ Stream<
({Layer layer, LayerViewState layerViewState})> -
Invokes the callback when the layer view state of any layer in the
GeoViewController changes.
no setter
-
Invokes the callback when the navigation state of the GeoViewController
changes.
no setter
-
onSpatialReferenceChanged
→ Stream<
SpatialReference?> -
Invokes the callback when the spatial reference of the GeoViewController
changes.
no setter
-
onTimeExtentChanged
→ Stream<
TimeExtent?> -
Invokes the callback when the time extent of the GeoViewController
changes.
no setter
-
onViewpointChanged
→ Stream<
void> -
Invokes the callback when the viewpoint of the GeoViewController has
changed.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- selectionProperties ↔ SelectionProperties
-
The selection properties for all graphic overlays and selectable layers
within the GeoViewController.
getter/setter pair
- spatialReference → SpatialReference?
-
The spatial reference defines the coordinate system used by the map or
scene in the GeoViewController.
no setter
- timeExtent ↔ TimeExtent?
-
The current TimeExtent of the GeoViewController.
getter/setter pair
Methods
-
dispose(
) → void - This function cleans up properties of this controller before garbage collection happens. This function should be overriden by subclasses that have other properties that need to be cleaned up.
-
exportImage(
) → Future< ArcGISImage> - Exports an image snapshot of the current GeoViewController.
-
getCurrentViewpoint(
ViewpointType viewpointType) → Viewpoint? - Retrieves the current Viewpoint of the GeoViewController.
-
getLayerViewState(
Layer layer) → LayerViewState? - Retrieves the layer's state in the GeoViewController.
-
identifyGraphicsOverlay(
GraphicsOverlay graphicsOverlay, {required Offset screenPoint, required double tolerance, int? maximumResults = 1}) → Future< IdentifyGraphicsOverlayResult> - Identifies a limited number of graphics in the specified graphics overlay, at the given screen point.
-
identifyGraphicsOverlays(
{required Offset screenPoint, required double tolerance, int? maximumResultsPerOverlay = 1}) → Future< List< IdentifyGraphicsOverlayResult> > - Identifies a limited number of graphics in all graphics overlays, at the given screen point.
-
identifyLayer(
Layer layer, {required Offset screenPoint, required double tolerance, int? maximumResults = 1}) → Future< IdentifyLayerResult> - Identifies a limited number of geoelements in the specified layer or sublayer, at the given screen point.
-
identifyLayers(
{required Offset screenPoint, required double tolerance, int? maximumResultsPerLayer = 1}) → Future< List< IdentifyLayerResult> > - Identifies a limited number of geoelements at the given screen point, in each identifiable layer or sublayer in the GeoViewController's ArcGISMap or ArcGISScene.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
setBookmark(
Bookmark bookmark) → Future< bool> - Sets the Viewpoint of the GeoViewController to the Bookmark.viewpoint.
-
setViewpoint(
Viewpoint viewpoint) → void - Pan or zoom the GeoViewController to the specified Viewpoint location.
-
setViewpointAnimated(
Viewpoint viewpoint, {double? duration}) → Future< bool> - Pan or zoom the GeoViewController using animation to the specified Viewpoint location. Animation takes place over the specified duration.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited