// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// DEALINGS IN THE SOFTWARE.

using System;
using System.Windows.Media;

namespace ICSharpCode.AvalonEdit.Rendering
{
	/// <summary>
	/// Background renderers draw in the background of a known layer.
	/// You can use background renderers to draw non-interactive elements on the TextView
	/// without introducing new UIElements.
	/// </summary>
	public interface IBackgroundRenderer
	{
		/// <summary>
		/// Gets the layer on which this background renderer should draw.
		/// </summary>
		KnownLayer Layer { get; }
		
		/// <summary>
		/// Causes the background renderer to draw.
		/// </summary>
		void Draw(TextView textView, DrawingContext drawingContext);
	}
}