Browse Source
git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3868 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61shortcuts
Daniel Grunwald
17 years ago
21 changed files with 485 additions and 174 deletions
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <author name="Daniel Grunwald"/>
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// <version>$Revision$</version>
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// </file>
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using System; |
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namespace ICSharpCode.AvalonEdit.Gui |
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{ |
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/// <summary>
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/// Allows <see cref="VisualLineElementGenerator"/>s, <see cref="IVisualLineTransformer"/>s and
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/// <see cref="IBackgroundRenderer"/> to be notified when they are added or removed from a text view.
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/// </summary>
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public interface ITextViewConnect |
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{ |
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/// <summary>
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/// Called when added to a text view.
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/// </summary>
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void AddToTextView(TextView textView); |
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/// <summary>
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/// Called when removed from a text view.
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/// </summary>
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void RemoveFromTextView(TextView textView); |
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} |
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} |
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <author name="Daniel Grunwald"/>
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// <version>$Revision$</version>
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// </file>
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using System; |
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using System.Diagnostics; |
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using System.Globalization; |
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using System.Text; |
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using System.Windows; |
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using ICSharpCode.AvalonEdit.Document; |
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using ICSharpCode.AvalonEdit.Highlighting; |
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namespace ICSharpCode.AvalonEdit.Utils |
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{ |
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/// <summary>
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/// Allows copying HTML text to the clipboard.
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/// </summary>
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public static class HtmlClipboard |
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{ |
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/// <summary>
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/// Builds a header for the CF_HTML clipboard format.
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/// </summary>
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static string BuildHeader(int startHTML, int endHTML, int startFragment, int endFragment) |
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{ |
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StringBuilder b = new StringBuilder(); |
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b.AppendLine("Version:1.0"); |
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b.AppendLine("StartHTML:" + startHTML.ToString("d8", CultureInfo.InvariantCulture)); |
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b.AppendLine("EndHTML:" + endHTML.ToString("d8", CultureInfo.InvariantCulture)); |
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b.AppendLine("StartFragment:" + startFragment.ToString("d8", CultureInfo.InvariantCulture)); |
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b.AppendLine("EndFragment:" + endFragment.ToString("d8", CultureInfo.InvariantCulture)); |
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return b.ToString(); |
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} |
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/// <summary>
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/// Sets the TextDataFormat.Html on the data object to the specified html fragment.
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/// This helper methods takes care of creating the necessary CF_HTML header.
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/// </summary>
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public static void SetHtml(DataObject dataObject, string htmlFragment) |
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{ |
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if (dataObject == null) |
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throw new ArgumentNullException("dataObject"); |
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if (htmlFragment == null) |
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throw new ArgumentNullException("htmlFragment"); |
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string htmlStart = @"<!DOCTYPE HTML PUBLIC ""-//W3C//DTD HTML 4.0 Transitional//EN"">" + Environment.NewLine |
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+ "<HTML>" + Environment.NewLine |
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+ "<HEAD><TITLE>Copied from AvalonEdit</TITLE></HEAD>" + Environment.NewLine |
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+ "<BODY>" + Environment.NewLine |
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+ "<!--StartFragment-->" + Environment.NewLine; |
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string htmlEnd = "<!--EndFragment-->" + Environment.NewLine + "</BODY>" + Environment.NewLine + "</HTML>" + Environment.NewLine; |
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string dummyHeader = BuildHeader(0, 0, 0, 0); |
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// the offsets are stored as UTF-8 bytes (see CF_HTML documentation)
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int startHTML = dummyHeader.Length; |
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int startFragment = startHTML + htmlStart.Length; |
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int endFragment = startFragment + Encoding.UTF8.GetByteCount(htmlFragment); |
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int endHTML = endFragment + htmlEnd.Length; |
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string cf_html = BuildHeader(startHTML, endHTML, startFragment, endFragment) + htmlStart + htmlFragment + htmlEnd; |
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Debug.WriteLine(cf_html); |
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dataObject.SetText(cf_html, TextDataFormat.Html); |
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} |
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/// <summary>
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/// Creates a HTML fragment from a part of a document.
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/// </summary>
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/// <param name="document">The document to create HTML from.</param>
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/// <param name="highlighter">The highlighter used to highlight the document.</param>
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/// <param name="segment">The part of the document to create HTML for. You can pass null to create HTML for the whole document.</param>
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/// <returns>HTML code for the document part.</returns>
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public static string CreateHtmlFragment(TextDocument document, DocumentHighlighter highlighter, ISegment segment) |
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{ |
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if (document == null) |
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throw new ArgumentNullException("document"); |
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if (segment == null) |
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segment = new SimpleSegment(0, document.TextLength); |
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StringBuilder html = new StringBuilder(); |
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int segmentEndOffset = segment.GetEndOffset(); |
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DocumentLine line = document.GetLineByOffset(segment.Offset); |
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while (line != null && line.Offset < segmentEndOffset) { |
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HighlightedLine highlightedLine; |
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if (highlighter != null) |
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highlightedLine = highlighter.HighlightLine(line); |
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else |
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highlightedLine = new HighlightedLine(line); |
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SimpleSegment s = segment.GetOverlap(line); |
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if (html.Length > 0) |
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html.AppendLine("<br>"); |
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html.Append(highlightedLine.ToHtml(s.Offset, s.GetEndOffset())); |
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line = line.NextLine; |
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} |
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return html.ToString(); |
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} |
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/// <summary>
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/// Creates a HTML fragment for the selected part of the document.
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/// </summary>
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public static string CreateHtmlFragmentForSelection(TextArea textArea) |
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{ |
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if (textArea == null) |
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throw new ArgumentNullException("textArea"); |
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DocumentHighlighter highlighter = textArea.GetService(typeof(DocumentHighlighter)) as DocumentHighlighter; |
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StringBuilder html = new StringBuilder(); |
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foreach (ISegment selectedSegment in textArea.Selection.Segments) { |
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html.AppendLine(CreateHtmlFragment(textArea.Document, highlighter, selectedSegment)); |
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} |
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return html.ToString(); |
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} |
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/// <summary>
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/// Escapes text and writes the result to the StringBuilder.
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/// </summary>
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internal static void EscapeHtml(StringBuilder b, string text) |
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{ |
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int spaceCount = -1; |
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foreach (char c in text) { |
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if (c == ' ') { |
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if (spaceCount < 0) |
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b.Append(" "); |
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else |
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spaceCount++; |
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} else if (c == '\t') { |
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if (spaceCount < 0) |
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spaceCount = 0; |
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// TODO: use tab width setting
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spaceCount += 4; |
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} else { |
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if (spaceCount == 1) { |
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b.Append(' '); |
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} else if (spaceCount >= 1) { |
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for (int i = 0; i < spaceCount; i++) { |
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b.Append(" "); |
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} |
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} |
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spaceCount = 0; |
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switch (c) { |
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case '<': |
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b.Append("<"); |
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break; |
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case '>': |
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b.Append(">"); |
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break; |
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case '&': |
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b.Append("&"); |
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break; |
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case '"': |
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b.Append("""); |
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break; |
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default: |
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b.Append(c); |
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break; |
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} |
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} |
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} |
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for (int i = 0; i < spaceCount; i++) { |
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b.Append(" "); |
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} |
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} |
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} |
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} |
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