TileOverlay¶

Namespace: ThinkGeo.UI.Android

Represents an overlay that maintains tiles.

public abstract class TileOverlay : Overlay, System.IDisposable

Inheritance Object → OverlayBase → Overlay → TileOverlay
Implements IDisposable

Properties¶

LayerType¶

Gets or sets the LayerType of the Overlay.

public LayerType LayerType { get; set; }

Property Value¶

LayerType

TileSizeMode¶

public TileSizeMode TileSizeMode { get; set; }

Property Value¶

TileSizeMode

TileWidth¶

Gets or sets the width of the tile.

public int TileWidth { get; set; }

Property Value¶

Int32
The width of the tile.

TileHeight¶

Gets or sets the height of the tile.

public int TileHeight { get; set; }

Property Value¶

Int32
The height of the tile.

IsCacheOnly¶

Gets or sets a value indicating whether this instance is cache only.

public bool IsCacheOnly { get; set; }

Property Value¶

Boolean
true if this instance is cache only; otherwise, false.

TileCache¶

Gets or sets the tile cache.

public RasterTileCache TileCache { get; set; }

Property Value¶

RasterTileCache
The tile cache.

TileType¶

Gets and sets the overlay is formed by multiple tiles or single tile.

public TileType TileType { get; set; }

Property Value¶

TileType
The type of the tile.

TileSnappingMode¶

Gets or sets the tile snapping mode.

public TileSnappingMode TileSnappingMode { get; set; }

Property Value¶

TileSnappingMode
The tile snapping mode.

TransitionEffect¶

Gets or sets the tile transition effect.

public TransitionEffect TransitionEffect { get; set; }

Property Value¶

TransitionEffect
The tile snapping mode.

OverlayView¶

Gets or sets the overlay view.

public MapLayout OverlayView { get; set; }

Property Value¶

MapLayout
The overlay view.

IsVisible¶

public bool IsVisible { get; set; }

Property Value¶

Boolean

Name¶

Gets or sets the name of this overaly.

public string Name { get; set; }

Property Value¶

String

DrawingExceptionMode¶

This property gets and sets the DrawingExceptionMode used when an exception occurs during drawing.

public DrawingExceptionMode DrawingExceptionMode { get; set; }

Property Value¶

DrawingExceptionMode
The drawing exception mode.

MapArguments¶

Gets or sets the map arguments.

public MapArguments MapArguments { get; set; }

Property Value¶

MapArguments
The map arguments.

Attribution¶

Gets or sets the attribution.

public string Attribution { get; set; }

Property Value¶

String
The attribution.

IsEmpty¶

Gets a value indicating whether this instance is empty.

public bool IsEmpty { get; }

Property Value¶

Boolean

Remarks:

This property enhances the performance of the overlay while drawing. If is true, we will skip drawing this overlay and continue drawing the next overlay.

DrawingQuality¶

Gets or sets the drawingQuality for this overlay.

public DrawingQuality DrawingQuality { get; set; }

Property Value¶

DrawingQuality

Opacity¶

Gets or sets the opacity for this overlay.

public double Opacity { get; set; }

Property Value¶

Double

Methods¶

GetTile(Context)¶

Chooses a tile object to form the TileOverlay.

When overriding this method, consider the initialize parameters setting on the tile.

protected TileView GetTile(Context context)

Parameters¶

context Context
Interface to global information about an application environment.

Returns¶

TileView

GetTileCore(Context)¶

Chooses a tile object to form the TileOverlay. When overriding this method, consider the initialize parameters setting on the tile.

protected TileView GetTileCore(Context context)

Parameters¶

context Context
Interface to global information about an application environment.

Returns¶

TileView
A tile object to form the TileOverlay.

GetOneTile()¶

Gets the one tile.

public TileView GetOneTile()

Returns¶

TileView

DrawCore(MapArguments, OverlayRefreshType)¶

Draws current overlay with provided mapArguments.

protected void DrawCore(MapArguments mapArguments, OverlayRefreshType refreshType)

Parameters¶

mapArguments MapArguments
The map arguments.

refreshType OverlayRefreshType
Type of the refresh.

DrawAsyncCore(MapArguments, OverlayRefreshType)¶

Draws current overlay with provided mapArguments.

protected Task DrawAsyncCore(MapArguments mapArguments, OverlayRefreshType refreshType)

Parameters¶

mapArguments MapArguments
The map arguments.

refreshType OverlayRefreshType
Type of the refresh.

Returns¶

Task

DrawTileAsyncCore(GeoCanvas, TileView)¶

Redraws a specified tile with the provided geoCanvas.

protected Task DrawTileAsyncCore(GeoCanvas geoCanvas, TileView tile)

Parameters¶

geoCanvas GeoCanvas
A geoCanvas for drawing this overlay.

tile TileView
A tile which needs to be drawn.

Returns¶

Task

DrawTileCore(GeoCanvas, TileView)¶

Redraws a specified tile with the provided geoCanvas.

protected void DrawTileCore(GeoCanvas geoCanvas, TileView tile)

Parameters¶

geoCanvas GeoCanvas
A geoCanvas for drawing this overlay.

tile TileView
A tile which needs to be drawn.

DrawTileAsync(TileView, MapArguments)¶

Redraws a specified tile with the provided world extent.

protected Task DrawTileAsync(TileView tileView, MapArguments mapArguments)

Parameters¶

tileView TileView
A Tile object that is created by the GetTile() method to draw.

mapArguments MapArguments
A mapArguments for drawing the passed tile.

Returns¶

Task

DrawTile(TileView, MapArguments)¶

Redraws a specified tile with the provided world extent.

protected void DrawTile(TileView tileView, MapArguments mapArguments)

Parameters¶

tileView TileView
A Tile object that is created by the GetTile() method to draw.

mapArguments MapArguments
A mapArguments for drawing the passed tile.

Dispose(Boolean)¶

Releases unmanaged and - optionally - managed resources.

protected void Dispose(bool disposing)

Parameters¶

disposing Boolean
true to release both managed and unmanaged resources; false to release only unmanaged resources.

PostTransformCore(TransformArguments, MapArguments)¶

Posts the transform for the TileOverlay.

protected void PostTransformCore(TransformArguments transformInfo, MapArguments mapArguments)

Parameters¶

transformInfo TransformArguments
The transform information.

mapArguments MapArguments
The map arguments.

GetTileMatrixCore(Double, Int32, Int32, GeographyUnit)¶

Gets the tile matrix for TileOverlay.

protected TileMatrix GetTileMatrixCore(double scale, int tileWidth, int tileHeight, GeographyUnit boundingBoxUnit)

Parameters¶

scale Double
The scale.

tileWidth Int32
Width of the tile.

tileHeight Int32
Height of the tile.

boundingBoxUnit GeographyUnit
The bounding box unit.

Returns¶

TileMatrix
TileMatrix.

Events¶

DrawingException¶

Occurs before exception is drawing on map.

public event EventHandler<DrawingExceptionOverlayEventArgs> DrawingException;

DrawnException¶

Occurs after exception is drawn on map.

public event EventHandler<DrawnExceptionOverlayEventArgs> DrawnException;

Drawing¶

This event raises before the overlay is drawing.

public event EventHandler<DrawingOverlayEventArgs> Drawing;

Drawn¶

This event raises after the overlay is drawn.

public event EventHandler<DrawnOverlayEventArgs> Drawn;