1 | // Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team |
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2 | // |
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3 | // Permission is hereby granted, free of charge, to any person obtaining a copy of this |
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4 | // software and associated documentation files (the "Software"), to deal in the Software |
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5 | // without restriction, including without limitation the rights to use, copy, modify, merge, |
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6 | // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons |
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7 | // to whom the Software is furnished to do so, subject to the following conditions: |
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8 | // |
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9 | // The above copyright notice and this permission notice shall be included in all copies or |
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10 | // substantial portions of the Software. |
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11 | // |
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12 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
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13 | // INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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14 | // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE |
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15 | // FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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16 | // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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17 | // DEALINGS IN THE SOFTWARE. |
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18 | |
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19 | using System; |
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20 | using ICSharpCode.AvalonEdit.Document; |
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21 | using ICSharpCode.AvalonEdit.Rendering; |
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22 | |
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23 | namespace ICSharpCode.AvalonEdit.Highlighting |
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24 | { |
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25 | /// <summary> |
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26 | /// A colorizer that applies the highlighting from a <see cref="RichTextModel"/> to the editor. |
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27 | /// </summary> |
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28 | public class RichTextColorizer : DocumentColorizingTransformer |
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29 | { |
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30 | readonly RichTextModel richTextModel; |
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31 | |
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32 | /// <summary> |
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33 | /// Creates a new RichTextColorizer instance. |
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34 | /// </summary> |
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35 | public RichTextColorizer(RichTextModel richTextModel) |
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36 | { |
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37 | if (richTextModel == null) |
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38 | throw new ArgumentNullException("richTextModel"); |
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39 | this.richTextModel = richTextModel; |
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40 | } |
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41 | |
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42 | /// <inheritdoc/> |
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43 | protected override void ColorizeLine(DocumentLine line) |
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44 | { |
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45 | var sections = richTextModel.GetHighlightedSections(line.Offset, line.Length); |
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46 | foreach (HighlightedSection section in sections) { |
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47 | if (HighlightingColorizer.IsEmptyColor(section.Color)) |
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48 | continue; |
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49 | ChangeLinePart(section.Offset, section.Offset + section.Length, |
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50 | visualLineElement => HighlightingColorizer.ApplyColorToElement(visualLineElement, section.Color, CurrentContext)); |
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51 | } |
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52 | } |
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53 | } |
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54 | } |
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