public static FrameworkElement Create(IClassificationFormatMap classificationFormatMap, string text, IList <TextClassificationTag> tags, TextElementFlags flags) { bool useFastTextBlock = (flags & (TextElementFlags.TrimmingMask | TextElementFlags.WrapMask | TextElementFlags.FilterOutNewLines)) == (TextElementFlags.NoTrimming | TextElementFlags.NoWrap | TextElementFlags.FilterOutNewLines); bool filterOutNewLines = (flags & TextElementFlags.FilterOutNewLines) != 0; if (tags.Count != 0) { if (useFastTextBlock) { return(new FastTextBlock((flags & TextElementFlags.NewFormatter) != 0, new TextSrc { text = ToString(WpfUnicodeUtils.ReplaceBadChars(text), filterOutNewLines), classificationFormatMap = classificationFormatMap, tagsList = tags.ToArray(), })); } var propsSpans = tags.Select(a => new TextRunPropertiesAndSpan(a.Span, classificationFormatMap.GetTextProperties(a.ClassificationType))); var textBlock = TextBlockFactory.Create(text, classificationFormatMap.DefaultTextProperties, propsSpans, TextBlockFactory.Flags.DisableSetTextBlockFontFamily | TextBlockFactory.Flags.DisableFontSize | (filterOutNewLines ? TextBlockFactory.Flags.FilterOutNewlines : 0)); textBlock.TextTrimming = GetTextTrimming(flags); textBlock.TextWrapping = GetTextWrapping(flags); return(textBlock); } FrameworkElement fwElem; if (useFastTextBlock) { fwElem = new FastTextBlock((flags & TextElementFlags.NewFormatter) != 0) { Text = ToString(WpfUnicodeUtils.ReplaceBadChars(text), filterOutNewLines) }; } else { fwElem = new TextBlock { Text = ToString(WpfUnicodeUtils.ReplaceBadChars(text), filterOutNewLines), TextTrimming = GetTextTrimming(flags), TextWrapping = GetTextWrapping(flags), }; } return(InitializeDefault(classificationFormatMap, fwElem)); }
/// <summary> /// Creates a <see cref="TextBlock"/> /// </summary> /// <param name="text">Full text</param> /// <param name="defaultProperties">Default text run properties</param> /// <param name="orderedPropsAndSpans">Ordered enumerable of spans and text run properties</param> /// <param name="flags">Flags</param> /// <returns></returns> public static TextBlock Create(string text, TextFormattingRunProperties defaultProperties, IEnumerable <TextRunPropertiesAndSpan> orderedPropsAndSpans, Flags flags = Flags.None) { if (text == null) { throw new ArgumentNullException(nameof(text)); } if (defaultProperties == null) { throw new ArgumentNullException(nameof(defaultProperties)); } if (orderedPropsAndSpans == null) { throw new ArgumentNullException(nameof(orderedPropsAndSpans)); } text = WpfUnicodeUtils.ReplaceBadChars(text); var textBlock = new TextBlock(); bool filterOutNewlines = (flags & Flags.FilterOutNewlines) != 0; if (!defaultProperties.BackgroundBrushEmpty) { textBlock.Background = defaultProperties.BackgroundBrush; } if (!defaultProperties.ForegroundBrushEmpty) { textBlock.Foreground = defaultProperties.ForegroundBrush; } if (!defaultProperties.BoldEmpty) { textBlock.FontWeight = defaultProperties.Bold ? FontWeights.Bold : FontWeights.Normal; } if (!defaultProperties.ItalicEmpty) { textBlock.FontStyle = defaultProperties.Italic ? FontStyles.Italic : FontStyles.Normal; } if (!defaultProperties.FontRenderingEmSizeEmpty && (flags & Flags.DisableFontSize) == 0) { textBlock.FontSize = defaultProperties.FontRenderingEmSize; } if (!defaultProperties.TextDecorationsEmpty) { textBlock.TextDecorations = defaultProperties.TextDecorations; } if (!defaultProperties.TextEffectsEmpty) { textBlock.TextEffects = defaultProperties.TextEffects; } if ((flags & Flags.DisableSetTextBlockFontFamily) == 0 && !defaultProperties.TypefaceEmpty) { textBlock.FontFamily = defaultProperties.Typeface.FontFamily; } if ((flags & Flags.DisableWordWrap) == 0) { textBlock.TextWrapping = TextWrapping.Wrap; } propsAndSpansList.Clear(); propsAndSpansList.AddRange(orderedPropsAndSpans); if (propsAndSpansList.Count == 0) { textBlock.Text = text; } else if (CanUseOnlyTextBlock(propsAndSpansList, text)) { var properties = propsAndSpansList[0].Properties; if (!properties.BackgroundBrushEmpty) { textBlock.Background = properties.BackgroundBrush; } if (!properties.ForegroundBrushEmpty) { textBlock.Foreground = properties.ForegroundBrush; } if (!properties.BoldEmpty) { textBlock.FontWeight = properties.Bold ? FontWeights.Bold : FontWeights.Normal; } if (!properties.ItalicEmpty) { textBlock.FontStyle = properties.Italic ? FontStyles.Italic : FontStyles.Normal; } if (!properties.FontRenderingEmSizeEmpty && (flags & Flags.DisableFontSize) == 0) { textBlock.FontSize = properties.FontRenderingEmSize; } if (!properties.TextDecorationsEmpty) { textBlock.TextDecorations = properties.TextDecorations; } if (!properties.TextEffectsEmpty) { textBlock.TextEffects = properties.TextEffects; } if (!properties.TypefaceEmpty && !IsSameTypeFace(defaultProperties, properties)) { textBlock.FontFamily = properties.Typeface.FontFamily; } textBlock.Text = ToString(text, filterOutNewlines); } else { int textOffset = 0; foreach (var tag in propsAndSpansList) { if (textOffset < tag.Span.Start) { textBlock.Inlines.Add(CreateRun(ToString(text.Substring(textOffset, tag.Span.Start - textOffset), filterOutNewlines), defaultProperties, null, flags)); } textBlock.Inlines.Add(CreateRun(ToString(text.Substring(tag.Span.Start, tag.Span.Length), filterOutNewlines), defaultProperties, tag.Properties, flags)); textOffset = tag.Span.End; } if (textOffset < text.Length) { textBlock.Inlines.Add(CreateRun(ToString(text.Substring(textOffset), filterOutNewlines), defaultProperties, null, flags)); } } propsAndSpansList.Clear(); return(textBlock); }