using System;

using System.Drawing;

namespace SharpMap.Layers

{

/// <summary>

/// An extended layer interface

/// </summary>

public interface ILayerEx : ILayer

{

/// <summary>

/// Renders the layer using the current viewport, returning a rectangle describing the area covered.

/// </summary>

/// <param name="g">Graphics object reference</param>

/// <param name="mvp">Map which is rendered</param>

/// <returns>Rectangle enclosing the actual area rendered on the graphics canvas</returns>

new Rectangle Render(Graphics g, MapViewport mvp);

/// <summary>

/// Method to invoke <see cref="RenderRequired"/> event.

/// </summary>

void RaiseRenderRequired();

/// <summary>

/// Event raised when a layer needs to be rendered

/// </summary>

event EventHandler RenderRequired;

}

}