/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/Layer.cs

 1// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
 2// 
 3// Permission is hereby granted, free of charge, to any person obtaining a copy of this
 4// software and associated documentation files (the "Software"), to deal in the Software
 5// without restriction, including without limitation the rights to use, copy, modify, merge,
 6// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
 7// to whom the Software is furnished to do so, subject to the following conditions:
 8// 
 9// The above copyright notice and this permission notice shall be included in all copies or
10// substantial portions of the Software.
11// 
12// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
13// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
15// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
16// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
17// DEALINGS IN THE SOFTWARE.
18
19using System;
20using System.Diagnostics;
21using System.Windows;
22using System.Windows.Media;
23
24namespace ICSharpCode.AvalonEdit.Rendering
25{
26	/// <summary>
27	/// Base class for known layers.
28	/// </summary>
29	class Layer : UIElement
30	{
31		protected readonly TextView textView;
32		protected readonly KnownLayer knownLayer;
33		
34		public Layer(TextView textView, KnownLayer knownLayer)
35		{
36			Debug.Assert(textView != null);
37			this.textView = textView;
38			this.knownLayer = knownLayer;
39			this.Focusable = false;
40		}
41		
42		protected override GeometryHitTestResult HitTestCore(GeometryHitTestParameters hitTestParameters)
43		{
44			return null;
45		}
46		
47		protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
48		{
49			return null;
50		}
51		
52		protected override void OnRender(DrawingContext drawingContext)
53		{
54			base.OnRender(drawingContext);
55			textView.RenderBackground(drawingContext, knownLayer);
56		}
57	}
58}