Overlay¶

Namespace: ThinkGeo.UI.XamarinForms

public abstract class Overlay

Inheritance Object → Overlay

Properties¶

Name¶

Gets or sets the name.

public abstract string Name { get; set; }

Property Value¶

String
The name.

IsVisible¶

Gets or sets a value indicating whether this instance is visible.

public abstract bool IsVisible { get; set; }

Property Value¶

Boolean
true if this instance is visible; otherwise, false.

Opacity¶

Gets or sets the Alpha value of the overlay, from 0 to 1.0

public abstract double Opacity { get; set; }

Property Value¶

Double

Methods¶

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.

public abstract void Refresh()

Remarks:

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

RefreshAsync()¶

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.

public Task RefreshAsync()

Returns¶

Task

Remarks:

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

GetBoundingBox()¶

Gets the bounding box.

public abstract RectangleShape GetBoundingBox()

Returns¶

RectangleShape
RectangleShape.