Browse Source
git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@623 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61shortcuts
Daniel Grunwald
20 years ago
6 changed files with 237 additions and 102 deletions
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/* |
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* Created by SharpDevelop. |
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* User: Daniel Grunwald |
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* Date: 25.10.2005 |
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* Time: 16:55 |
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*/ |
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using System; |
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using System.Collections.Generic; |
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using System.Drawing; |
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using ICSharpCode.TextEditor.Document; |
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namespace ICSharpCode.TextEditor |
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{ |
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/// <summary>
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/// A class that is able to draw a line on any control (outside the text editor)
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/// </summary>
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public class DrawableLine |
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{ |
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static StringFormat sf = (StringFormat)System.Drawing.StringFormat.GenericTypographic.Clone(); |
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List<SimpleTextWord> words = new List<SimpleTextWord>(); |
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SizeF spaceSize; |
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Font monospacedFont; |
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Font boldMonospacedFont; |
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private class SimpleTextWord { |
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internal TextWordType Type; |
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internal string Word; |
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internal bool Bold; |
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internal Color Color; |
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public SimpleTextWord(TextWordType Type, string Word, bool Bold, Color Color) |
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{ |
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this.Type = Type; |
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this.Word = Word; |
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this.Bold = Bold; |
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this.Color = Color; |
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} |
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internal readonly static SimpleTextWord Space = new SimpleTextWord(TextWordType.Space, " ", false, Color.Black); |
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internal readonly static SimpleTextWord Tab = new SimpleTextWord(TextWordType.Tab, "\t", false, Color.Black); |
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} |
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public DrawableLine(IDocument document, LineSegment line, Font monospacedFont, Font boldMonospacedFont) |
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{ |
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this.monospacedFont = monospacedFont; |
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this.boldMonospacedFont = boldMonospacedFont; |
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if (line.Words != null) { |
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foreach (TextWord word in line.Words) { |
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if (word.Type == TextWordType.Space) { |
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words.Add(SimpleTextWord.Space); |
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} else if (word.Type == TextWordType.Tab) { |
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words.Add(SimpleTextWord.Tab); |
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} else { |
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words.Add(new SimpleTextWord(TextWordType.Word, word.Word, word.Font.Bold, word.Color)); |
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} |
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} |
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} else { |
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words.Add(new SimpleTextWord(TextWordType.Word, document.GetText(line), false, Color.Black)); |
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} |
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} |
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public int LineLength { |
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get { |
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int length = 0; |
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foreach (SimpleTextWord word in words) { |
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length += word.Word.Length; |
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} |
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return length; |
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} |
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} |
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public void SetBold(int startIndex, int endIndex, bool bold) |
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{ |
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if (startIndex < 0) |
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throw new ArgumentException("startIndex must be >= 0"); |
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if (startIndex > endIndex) |
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throw new ArgumentException("startIndex must be <= endIndex"); |
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if (startIndex == endIndex) return; |
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int pos = 0; |
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for (int i = 0; i < words.Count; i++) { |
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SimpleTextWord word = words[i]; |
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if (pos >= endIndex) |
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break; |
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int wordEnd = pos + word.Word.Length; |
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// 3 possibilities:
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if (startIndex <= pos && endIndex >= wordEnd) { |
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// word is fully in region:
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word.Bold = bold; |
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} else if (startIndex <= pos) { |
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// beginning of word is in region
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int inRegionLength = endIndex - pos; |
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SimpleTextWord newWord = new SimpleTextWord(word.Type, word.Word.Substring(inRegionLength), word.Bold, word.Color); |
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words.Insert(i + 1, newWord); |
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word.Bold = bold; |
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word.Word = word.Word.Substring(0, inRegionLength); |
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} else if (startIndex < wordEnd) { |
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// end of word is in region (or middle of word is in region)
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int notInRegionLength = startIndex - pos; |
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SimpleTextWord newWord = new SimpleTextWord(word.Type, word.Word.Substring(notInRegionLength), word.Bold, word.Color); |
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// newWord.Bold will be set in the next iteration
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words.Insert(i + 1, newWord); |
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word.Word = word.Word.Substring(0, notInRegionLength); |
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} |
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pos = wordEnd; |
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} |
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} |
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public static float DrawDocumentWord(Graphics g, string word, PointF position, Font font, Color foreColor) |
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{ |
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if (word == null || word.Length == 0) { |
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return 0f; |
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} |
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SizeF wordSize = g.MeasureString(word, font, 32768, sf); |
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g.DrawString(word, |
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font, |
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BrushRegistry.GetBrush(foreColor), |
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position, |
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sf); |
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return wordSize.Width; |
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} |
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public SizeF GetSpaceSize(Graphics g) |
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{ |
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if (spaceSize.IsEmpty) { |
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spaceSize = g.MeasureString("-", boldMonospacedFont, new PointF(0, 0), sf); |
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} |
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return spaceSize; |
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} |
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public void DrawLine(Graphics g, ref float xPos, float yPos) |
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{ |
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SizeF spaceSize = GetSpaceSize(g); |
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foreach (SimpleTextWord word in words) { |
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switch (word.Type) { |
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case TextWordType.Space: |
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xPos += spaceSize.Width; |
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break; |
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case TextWordType.Tab: |
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float tabWidth = spaceSize.Width * 4; |
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xPos += tabWidth; |
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xPos = (int)((xPos + 2) / tabWidth) * tabWidth; |
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break; |
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case TextWordType.Word: |
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xPos += DrawDocumentWord(g, |
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word.Word, |
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new PointF(xPos, yPos), |
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word.Bold ? boldMonospacedFont : monospacedFont, |
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word.Color |
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); |
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break; |
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} |
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} |
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} |
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} |
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} |
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