source: branches/2929_PrioritizedGrammarEnumeration/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Utils/DocumentPrinter.cs @ 16452

// 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
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Documents;

using ICSharpCode.NRefactory.Editor;
using ICSharpCode.AvalonEdit.Document;
using ICSharpCode.AvalonEdit.Highlighting;

namespace ICSharpCode.AvalonEdit.Utils
{
  /// <summary>
  /// Helps printing documents.
  /// </summary>
  public static class DocumentPrinter
  {
    #if NREFACTORY
    /// <summary>
    /// Converts a readonly TextDocument to a Block and applies the provided highlighting definition.
    /// </summary>
    public static Block ConvertTextDocumentToBlock(ReadOnlyDocument document, IHighlightingDefinition highlightingDefinition)
    {
      IHighlighter highlighter;
      if (highlightingDefinition != null)
        highlighter = new DocumentHighlighter(document, highlightingDefinition);
      else
        highlighter = null;
      return ConvertTextDocumentToBlock(document, highlighter);
    }
    #endif
    
    /// <summary>
    /// Converts an IDocument to a Block and applies the provided highlighter.
    /// </summary>
    public static Block ConvertTextDocumentToBlock(IDocument document, IHighlighter highlighter)
    {
      if (document == null)
        throw new ArgumentNullException("document");
      Paragraph p = new Paragraph();
      p.TextAlignment = TextAlignment.Left;
      for (int lineNumber = 1; lineNumber <= document.LineCount; lineNumber++) {
        if (lineNumber > 1)
          p.Inlines.Add(new LineBreak());
        var line = document.GetLineByNumber(lineNumber);
        if (highlighter != null) {
          HighlightedLine highlightedLine = highlighter.HighlightLine(lineNumber);
          p.Inlines.AddRange(highlightedLine.ToRichText().CreateRuns());
        } else {
          p.Inlines.Add(document.GetText(line));
        }
      }
      return p;
    }
    
    #if NREFACTORY
    /// <summary>
    /// Converts a readonly TextDocument to a RichText and applies the provided highlighting definition.
    /// </summary>
    public static RichText ConvertTextDocumentToRichText(ReadOnlyDocument document, IHighlightingDefinition highlightingDefinition)
    {
      IHighlighter highlighter;
      if (highlightingDefinition != null)
        highlighter = new DocumentHighlighter(document, highlightingDefinition);
      else
        highlighter = null;
      return ConvertTextDocumentToRichText(document, highlighter);
    }
    #endif
    
    /// <summary>
    /// Converts an IDocument to a RichText and applies the provided highlighter.
    /// </summary>
    public static RichText ConvertTextDocumentToRichText(IDocument document, IHighlighter highlighter)
    {
      if (document == null)
        throw new ArgumentNullException("document");
      var texts = new List<RichText>();
      for (int lineNumber = 1; lineNumber <= document.LineCount; lineNumber++) {
        var line = document.GetLineByNumber(lineNumber);
        if (lineNumber > 1)
          texts.Add(line.PreviousLine.DelimiterLength == 2 ? "\r\n" : "\n");
        if (highlighter != null) {
          HighlightedLine highlightedLine = highlighter.HighlightLine(lineNumber);
          texts.Add(highlightedLine.ToRichText());
        } else {
          texts.Add(document.GetText(line));
        }
      }
      return RichText.Concat(texts.ToArray());
    }
    
    /// <summary>
    /// Creates a flow document from the editor's contents.
    /// </summary>
    public static FlowDocument CreateFlowDocumentForEditor(TextEditor editor)
    {
      IHighlighter highlighter = editor.TextArea.GetService(typeof(IHighlighter)) as IHighlighter;
      FlowDocument doc = new FlowDocument(ConvertTextDocumentToBlock(editor.Document, highlighter));
      doc.FontFamily = editor.FontFamily;
      doc.FontSize = editor.FontSize;
      return doc;
    }
  }
}