This class is the base class of all overlays in this overlay system.

• System.Object
  • ThinkGeo.MapSuite.WpfDesktopEdition.Overlay
    • ThinkGeo.MapSuite.WpfDesktopEdition.TileOverlay
    • ThinkGeo.MapSuite.WpfDesktopEdition.InteractiveOverlay
    • ThinkGeo.MapSuite.WpfDesktopEdition.AdornmentOverlay
    • ThinkGeo.MapSuite.WpfDesktopEdition.BackgroundOverlay
    • ThinkGeo.MapSuite.WpfDesktopEdition.MarkerOverlay
    • ThinkGeo.MapSuite.WpfDesktopEdition.PopupOverlay

Overlay()

Constructor of the Overlay class.

N/A

Refresh(IEnumerable<RectangleShape>)

N/A

N/A

• Type:Void
• Description:N/A

• extentsToRefresh
  • Type:IEnumerable<RectangleShape>
  • Description:N/A

Refresh(TimeSpan)

N/A

N/A

• Type:Void
• Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

Refresh(TimeSpan,RequestDrawingBufferTimeType)

N/A

N/A

• Type:Void
• Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

• bufferTimeType
  • Type:RequestDrawingBufferTimeType
  • Description:N/A

Refresh(RectangleShape,TimeSpan)

N/A

N/A

• Type:Void
• Description:N/A

• extentToRefresh
  • Type:RectangleShape
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

Refresh(RectangleShape,TimeSpan,RequestDrawingBufferTimeType)

N/A

N/A

• Type:Void
• Description:N/A

• extentToRefresh
  • Type:RectangleShape
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

• bufferTimeType
  • Type:RequestDrawingBufferTimeType
  • Description:N/A

Refresh(IEnumerable<RectangleShape>,TimeSpan)

N/A

N/A

• Type:Void
• Description:N/A

• extentsToRefresh
  • Type:IEnumerable<RectangleShape>
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

Refresh(IEnumerable<RectangleShape>,TimeSpan,RequestDrawingBufferTimeType)

N/A

N/A

• Type:Void
• Description:N/A

• extentsToRefresh
  • Type:IEnumerable<RectangleShape>
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

• bufferTimeType
  • Type:RequestDrawingBufferTimeType
  • Description:N/A

Initialize(MapArguments)

This method initializes overlay object.

This is a wrapper method for the virtual method InitializeCore.

• Type:Void
• Description:N/A

• mapArguments
  • Type:MapArguments
  • Description:This parameter maintains current map information for calculating mechanism.

Refresh(RectangleShape)

N/A

N/A

• Type:Void
• Description:N/A

• extent
  • Type:RectangleShape
  • Description:N/A

Refresh()

This method refreshes all the content in the OverlayCanvas. For example, LayerOverlay with multiple tiles; when the style of one layer is changed, call Refresh to refresh all the tiles to accept new styles.

The difference from Draw() method is that Refresh() method refreshs all the elements while Draw() does not.

• Type:Void
• Description:N/A

Close()

N/A

N/A

• Type:Void
• Description:N/A

Open()

N/A

N/A

• Type:Void
• Description:N/A

Draw(RectangleShape)

This method draws the overlay with the provided extent in world coordinate.

N/A

• Type:Void
• Description:N/A

• targetExtent
  • Type:RectangleShape
  • Description:This parameter indicates an extent in world coordinate for drawing the overlay.

Draw(RectangleShape,OverlayRefreshType)

This method draws the overlay with the provided extent in world coordinate.

N/A

• Type:Void
• Description:N/A

• targetExtent
  • Type:RectangleShape
  • Description:This parameter indicates an extent in world coordinate for drawing the overlay.

• refreshType
  • Type:OverlayRefreshType
  • Description:This parameter indicates whether the elements of this overlay needs to be refreshed. For example, TileOverlay is formed by tiles. When panning the map around, the existing tile doesn't need to be redraw, the only thing we need to do is modifying the position of these tiles. On another hand, when click to change the style of the overlay, we need to redraw the tile images to change the appearance. So we need refresh mode.

PanTo(RectangleShape)

This method pans the overlay to the provided world extent.

Some overlay doesn't need to continously drawing all the tile. For example, MarkerOverlay is formed by markers. When mouse down to pan, the markers don't need to redraw, we can only change its position. When mouse up to end panning, we can redraw the overlay for better performance.

• Type:Void
• Description:N/A

• targetExtent
  • Type:RectangleShape
  • Description:This parameter is the target world extent for panning.

GetBoundingBox()

This method gets a bounding box of the Overlay.

This method is the concrete wrapper for the abstract method GetBoundingBoxCore. This method returns the bounding box of the Overlay. As this is a concrete public method that wraps a Core method, we reserve the right to add events and other logic to pre- or post-process data returned by the Core version of the method. In this way, we leave our framework open on our end, but also allow you the developer to extend our logic to suit your needs. If you have questions about this, please contact our support team as we would be happy to work with you on extending our framework.

• Type:RectangleShape
• Description:A RectangleShape indicating the bounding box of this overlay

SaveState()

This method saves overlay state to a byte array.

N/A

• Type:Byte[]
• Description:A byte array indicates current overlay state.

LoadState(Byte[])

This method restore the overlay state back from the specified state.

N/A

• Type:Void
• Description:N/A

• state
  • Type:Byte[]
  • Description:This parameter indicates the state for restore the overlay.

Dispose()

This method dispose unmanaged resource used in this class.

N/A

• Type:Void
• Description:N/A

ToString()

N/A

N/A

• Type:String
• Description:N/A

Equals(Object)

N/A

N/A

• Type:Boolean
• Description:N/A

• obj
  • Type:Object
  • Description:N/A

GetHashCode()

N/A

N/A

• Type:Int32
• Description:N/A

GetType()

N/A

N/A

• Type:Type
• Description:N/A

InitializeCore(MapArguments)

This method initializes overlay object.

When implementing this method, consider initializing the overlay canvas such as setting its z-index, setting current map reference to the CurrentMap property.

• Type:Void
• Description:N/A

• mapArguments
  • Type:MapArguments
  • Description:This parameter maintains current map information for calculating mechanism.

RefreshCore(RectangleShape)

N/A

N/A

• Type:Void
• Description:N/A

• extent
  • Type:RectangleShape
  • Description:N/A

RefreshCore()

This method refreshes all the content in the OverlayCanvas. For example, LayerOverlay with multiple tiles; when the style of one layer is changed, call Refresh to refresh all the tiles to accept new styles.

The difference from Draw() method is that Refresh() method refreshs all the elements while Draw() does not.

• Type:Void
• Description:N/A

CloseCore()

N/A

N/A

• Type:Void
• Description:N/A

OpenCore()

N/A

N/A

• Type:Void
• Description:N/A

DrawCore(RectangleShape,OverlayRefreshType)

This method draws the overlay with the provided extent in world coordinate.

N/A

• Type:Void
• Description:N/A

• targetExtent
  • Type:RectangleShape
  • Description:This parameter indicates an extent in world coordinate for drawing the overlay.

• overlayRefreshType
  • Type:OverlayRefreshType
  • Description:This parameter indicates whether the elements of this overlay needs to be refreshed. For example, TileOverlay is formed by tiles. When panning or zooming the map, the existing tile doesn't need to be redraw, because the styles are the same as the previous states. the only thing we need to do is modifying the position of these tiles. On another hand, when click to change the style of the overlay, we need to redraw the tile images to change the appearance. So we need refresh mode.

4hM=(GeoCanvas)

N/A

N/A

• Type:Void
• Description:N/A

• canvas
  • Type:GeoCanvas
  • Description:N/A

DrawAttributionCore(GeoCanvas)

N/A

N/A

• Type:Void
• Description:N/A

• canvas
  • Type:GeoCanvas
  • Description:N/A

OnDrawingAttribution(DrawingAttributionOverlayEventArgs)

N/A

N/A

• Type:Void
• Description:N/A

• args
  • Type:DrawingAttributionOverlayEventArgs
  • Description:N/A

OnDrawnAttribution(DrawnAttributionOverlayEventArgs)

N/A

N/A

• Type:Void
• Description:N/A

• args
  • Type:DrawnAttributionOverlayEventArgs
  • Description:N/A

PanToCore(RectangleShape)

This method pans the overlay to the provided world extent.

Some overlay doesn't need to continously drawing all the tile. For example, MarkerOverlay is formed by markers. When mouse down to pan, the markers don't need to redraw, we can only change its position. When mouse up to end panning, we can redraw the overlay for better performance.

• Type:Void
• Description:N/A

• targetExtent
  • Type:RectangleShape
  • Description:This parameter is the target world extent for panning.

OnDrawing(DrawingOverlayEventArgs)

This method raises before the overlay is drawing.

N/A

• Type:Void
• Description:N/A

• e
  • Type:DrawingOverlayEventArgs
  • Description:This parameter is the event argument for Drawing event.

OnDrawn(DrawnOverlayEventArgs)

This method raises after the overlay is drawn.

N/A

• Type:Void
• Description:N/A

• e
  • Type:DrawnOverlayEventArgs
  • Description:This parameter is the event argument for Drawn event.

GetBoundingBoxCore()

This method returns the bounding box of the Overlay.

This method returns the bounding box of the Overlay.

• Type:RectangleShape
• Description:This method returns the bounding box of the Overlay.

SaveStateCore()

This method saves overlay state to a byte array.

N/A

• Type:Byte[]
• Description:A byte array indicates current overlay state.

LoadStateCore(Byte[])

This method restore the overlay state back from the specified state.

N/A

• Type:Void
• Description:N/A

• state
  • Type:Byte[]
  • Description:This parameter indicates the state for restore the overlay.

Finalize()

Finalizer of this Overlay object.

N/A

• Type:Void
• Description:N/A

Dispose(Boolean)

This method dispose unmanaged resource used in this class.

N/A

• Type:Void
• Description:N/A

• disposing
  • Type:Boolean
  • Description:N/A

OnRefreshing(OverlayRefreshType)

N/A

N/A

• Type:Void
• Description:N/A

• refreshType
  • Type:OverlayRefreshType
  • Description:N/A

MemberwiseClone()

N/A

N/A

• Type:Object
• Description:N/A

AutoRefreshInterval

N/A

N/A

• Type:TimeSpan

Name

Gets or sets the name of this overaly.

N/A

• Type:String

MapArguments

Gets or sets current map information which will be used for calculating mechanism.

N/A

• Type:MapArguments

OverlayCanvas

Gets or sets the actual canvas which maintains all the visual elements on the overlay.

N/A

• Type:Canvas

IsBase

N/A

N/A

• Type:Boolean

CanRefreshRegion

N/A

N/A

• Type:Boolean

DrawingExceptionMode

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

N/A

• Type:DrawingExceptionMode

IsVisible

Gets or sets if this overlay is visible.

N/A

• Type:Boolean

Attribution

N/A

N/A

• Type:String

IsEmpty

This property gets if this overlay is empty or not.

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.

• Type:Boolean

PreviousExtent

Gets or sets the previous exent of the overlay.

N/A

• Type:RectangleShape

3BM=

N/A

N/A

• Type:Double

IsOverlayInitialized

Gets or sets if the overlay canvas is initialized.

N/A

• Type:Boolean

Drawing This event raises before the overlay is drawing.

N/A

Event Arguments:DrawingOverlayEventArgs

Drawn This event raises after the overlay is drawn.

N/A

Event Arguments:DrawnOverlayEventArgs

DrawingAttribution N/A

N/A

Event Arguments:DrawingAttributionOverlayEventArgs

DrawnAttribution N/A

N/A

Event Arguments:DrawnAttributionOverlayEventArgs