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path: root/Software/Visual_Studio/Scripting/Tango.Scripting.Editors/Rendering/TextViewCachedElements.cs
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pre { line-height: 125%; }
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using System.Collections.Generic;
using System.Windows.Media;
using System.Windows.Media.TextFormatting;
using Tango.Scripting.Editors.Utils;

namespace Tango.Scripting.Editors.Rendering
{
	sealed class TextViewCachedElements : IDisposable
	{
		TextFormatter formatter;
		Dictionary<string, TextLine> nonPrintableCharacterTexts;
		
		public TextLine GetTextForNonPrintableCharacter(string text, ITextRunConstructionContext context)
		{
			if 
w"> = new Dictionary<string, TextLine>(); TextLine textLine; if (!nonPrintableCharacterTexts.TryGetValue(text, out textLine)) { var p = new VisualLineElementTextRunProperties(context.GlobalTextRunProperties); p.SetForegroundBrush(context.TextView.NonPrintableCharacterBrush); if (formatter == null) formatter = TextFormatterFactory.Create(context.TextView); textLine = FormattedTextElement.PrepareText(formatter, text, p); nonPrintableCharacterTexts[text] = textLine; } return textLine; } public void Dispose() { if (nonPrintableCharacterTexts != null) { foreach (TextLine line in nonPrintableCharacterTexts.Values) line.Dispose(); } if (formatter != null) formatter.Dispose(); } } }