/// <summary> /// Renders a link element /// </summary> /// <param name="inlineCollection"> The list to add to. </param> /// <param name="element"> The parsed inline element to render. </param> /// <param name="parent"> The container element. </param> /// <param name="context"> Persistent state. </param> private void RenderMarkdownLink(InlineCollection inlineCollection, MarkdownLinkInline element, TextElement parent, RenderContext context) { // Avoid crash when link text is empty. if (element.Inlines.Count == 0) { return; } // Attempt to resolve references. element.ResolveReference(_document); if (element.Url == null) { // The element couldn't be resolved, just render it as text. RenderInlineChildren(inlineCollection, element.Inlines, parent, context); return; } // HACK: Superscript is not allowed within a hyperlink. But if we switch it around, so // that the superscript is outside the hyperlink, then it will render correctly. // This assumes that the entire hyperlink is to be rendered as superscript. if (AllTextIsSuperscript(element) == false) { // Regular ol' hyperlink. var link = new Hyperlink(); // Register the link _linkRegister.RegisterNewHyperLink(link, element.Url); // Remove superscripts. RemoveSuperscriptRuns(element, insertCaret: true); // Render the children into the link inline. var childContext = context.Clone(); childContext.WithinHyperlink = true; RenderInlineChildren(link.Inlines, element.Inlines, link, childContext); context.TrimLeadingWhitespace = childContext.TrimLeadingWhitespace; // Add it to the current inlines inlineCollection.Add(link); } else { // THE HACK IS ON! // Create a fake superscript element. var fakeSuperscript = new SuperscriptTextInline { Inlines = new List <MarkdownInline> { element } }; // Remove superscripts. RemoveSuperscriptRuns(element, insertCaret: false); // Now render it. RenderSuperscriptRun(inlineCollection, fakeSuperscript, parent, context); } }
/// <summary> /// Renders a superscript element. /// </summary> /// <param name="inlineCollection"> The list to add to. </param> /// <param name="element"> The parsed inline element to render. </param> /// <param name="parent"> The container element. </param> /// <param name="context"> Persistent state. </param> private void RenderSuperscriptRun(InlineCollection inlineCollection, SuperscriptTextInline element, TextElement parent, RenderContext context) { // Le <sigh>, InlineUIContainers are not allowed within hyperlinks. if (context.WithinHyperlink) { RenderInlineChildren(inlineCollection, element.Inlines, parent, context); return; } var paragraph = new Paragraph(); paragraph.FontSize = parent.FontSize * 0.8; paragraph.FontFamily = parent.FontFamily; paragraph.FontStyle = parent.FontStyle; paragraph.FontWeight = parent.FontWeight; RenderInlineChildren(paragraph.Inlines, element.Inlines, paragraph, context); var richTextBlock = CreateOrReuseRichTextBlock(null, context); richTextBlock.Blocks.Add(paragraph); var border = new Border(); border.Padding = new Thickness(0, 0, 0, paragraph.FontSize * 0.2); border.Child = richTextBlock; var inlineUIContainer = new InlineUIContainer(); inlineUIContainer.Child = border; // Add it to the current inlines inlineCollection.Add(inlineUIContainer); }
/// <summary> /// Renders a link element /// </summary> /// <param name="element"> The parsed inline element to render. </param> /// <param name="context"> Persistent state. </param> protected override void RenderMarkdownLink(MarkdownLinkInline element, IRenderContext context) { if (!(context is InlineRenderContext localContext)) { throw new RenderContextIncorrectException(); } // HACK: Superscript is not allowed within a hyperlink. But if we switch it around, so // that the superscript is outside the hyperlink, then it will render correctly. // This assumes that the entire hyperlink is to be rendered as superscript. if (AllTextIsSuperscript(element) == false) { var link = new Hyperlink(); LinkRegister.RegisterNewHyperLink(link, element.Url); RemoveSuperscriptRuns(element, insertCaret: true); var childContext = new InlineRenderContext(link.Inlines, context) { Parent = link, WithinHyperlink = true }; if (localContext.OverrideForeground) { link.Foreground = localContext.Foreground; } else if (LinkForeground != null) { link.Foreground = LinkForeground; } RenderInlineChildren(element.Inlines, childContext); context.TrimLeadingWhitespace = childContext.TrimLeadingWhitespace; ToolTipService.SetToolTip(link, element.Tooltip ?? element.Url); localContext.InlineCollection.Add(link); } else { // THE HACK IS ON! // Create a fake superscript element. var fakeSuperscript = new SuperscriptTextInline { Inlines = new List <MarkdownInline> { element } }; RemoveSuperscriptRuns(element, insertCaret: false); RenderSuperscriptRun(fakeSuperscript, context); } }
static Common() { BoldTextInline.AddTripChars(_triggerList); ItalicTextInline.AddTripChars(_triggerList); MarkdownLinkInline.AddTripChars(_triggerList); HyperlinkInline.AddTripChars(_triggerList); StrikethroughTextInline.AddTripChars(_triggerList); SuperscriptTextInline.AddTripChars(_triggerList); CodeInline.AddTripChars(_triggerList); // Create an array of characters to search against using IndexOfAny. _tripCharacters = _triggerList.Select(trigger => trigger.FirstChar).Distinct().ToArray(); }
/// <summary> /// Renders a superscript element. /// </summary> /// <param name="element"> The parsed inline element to render. </param> /// <param name="context"> Persistent state. </param> protected override void RenderSuperscriptRun(SuperscriptTextInline element, IRenderContext context) { var localContext = context as InlineRenderContext; var parent = localContext?.Parent as TextElement; if (localContext == null && parent == null) { throw new RenderContextIncorrectException(); } // Le <sigh>, InlineUIContainers are not allowed within hyperlinks. if (localContext.WithinHyperlink) { RenderInlineChildren(element.Inlines, context); return; } var paragraph = new Paragraph { FontSize = parent.FontSize * 0.8, FontFamily = parent.FontFamily, FontStyle = parent.FontStyle, FontWeight = parent.FontWeight }; var childContext = new InlineRenderContext(paragraph.Inlines, context) { Parent = paragraph }; RenderInlineChildren(element.Inlines, childContext); var richTextBlock = CreateOrReuseRichTextBlock(new UIElementCollectionRenderContext(null, context)); richTextBlock.Blocks.Add(paragraph); var border = new Border { Padding = new Thickness(0, 0, 0, paragraph.FontSize * 0.2), Child = richTextBlock }; var inlineUIContainer = new InlineUIContainer { Child = border }; // Add it to the current inlines localContext.InlineCollection.Add(inlineUIContainer); }
/// <summary> /// Renders a superscript element. /// </summary> /// <param name="element"> The parsed inline element to render. </param> /// <param name="context"> Persistent state. </param> protected override void RenderSuperscriptRun(SuperscriptTextInline element, IRenderContext context) { var localContext = context as InlineRenderContext; var parent = localContext?.Parent as TextElement; if (localContext == null && parent == null) { throw new RenderContextIncorrectException(); } // Le <sigh>, InlineUIContainers are not allowed within hyperlinks. if (localContext.WithinHyperlink) { RenderInlineChildren(element.Inlines, context); return; } var span = new Span() { FontSize = parent.FontSize * 0.8, FontFamily = parent.FontFamily, FontStyle = parent.FontStyle, FontWeight = parent.FontWeight, BaselineAlignment = BaselineAlignment.TextTop }; if (parent is Span parentspan) { span.BaselineAlignment = parentspan.BaselineAlignment switch { BaselineAlignment.Bottom => BaselineAlignment.Subscript, BaselineAlignment.Baseline => BaselineAlignment.Center, BaselineAlignment.Center => BaselineAlignment.TextTop, BaselineAlignment.TextTop => BaselineAlignment.Top, BaselineAlignment.Subscript => BaselineAlignment.Baseline, _ => BaselineAlignment.TextTop }; } var childContext = new InlineRenderContext(span.Inlines, context) { Parent = span }; RenderInlineChildren(element.Inlines, childContext); localContext.InlineCollection.Add(span); }
/// <summary> /// Finds the next inline element by matching trip chars and verifying the match. /// </summary> /// <param name="markdown"> The markdown text to parse. </param> /// <param name="start"> The position to start parsing. </param> /// <param name="end"> The position to stop parsing. </param> /// <param name="ignoreLinks"> Indicates whether to parse links. </param> /// <returns>Returns the next element</returns> private static InlineParseResult FindNextInlineElement(string markdown, int start, int end, bool ignoreLinks) { // Search for the next inline sequence. for (int pos = start; pos < end; pos++) { // IndexOfAny should be the fastest way to skip characters we don't care about. pos = markdown.IndexOfAny(_tripCharacters, pos, end - pos); if (pos < 0) { break; } // Find the trigger(s) that matched. char currentChar = markdown[pos]; foreach (InlineTripCharHelper currentTripChar in _triggerList) { // Check if our current char matches the suffix char. if (currentChar == currentTripChar.FirstChar) { // Don't match if the previous character was a backslash. if (pos > start && markdown[pos - 1] == '\\') { continue; } // If we are here we have a possible match. Call into the inline class to verify. InlineParseResult parseResult = null; switch (currentTripChar.Method) { case InlineParseMethod.BoldItalic: parseResult = BoldItalicTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Comment: parseResult = CommentInline.Parse(markdown, pos, end); break; case InlineParseMethod.LinkReference: parseResult = LinkAnchorInline.Parse(markdown, pos, end); break; case InlineParseMethod.Bold: parseResult = BoldTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Italic: parseResult = ItalicTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.MarkdownLink: if (!ignoreLinks) { parseResult = MarkdownLinkInline.Parse(markdown, pos, end); } break; case InlineParseMethod.AngleBracketLink: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseAngleBracketLink(markdown, pos, end); } break; case InlineParseMethod.Url: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseUrl(markdown, pos, end); } break; case InlineParseMethod.RedditLink: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseRedditLink(markdown, pos, end); } break; case InlineParseMethod.PartialLink: if (!ignoreLinks) { parseResult = HyperlinkInline.ParsePartialLink(markdown, pos, end); } break; case InlineParseMethod.Email: if (!ignoreLinks) { parseResult = HyperlinkInline.ParseEmailAddress(markdown, start, pos, end); } break; case InlineParseMethod.Strikethrough: parseResult = StrikethroughTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Superscript: parseResult = SuperscriptTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Subscript: parseResult = SubscriptTextInline.Parse(markdown, pos, end); break; case InlineParseMethod.Code: parseResult = CodeInline.Parse(markdown, pos, end); break; case InlineParseMethod.Image: parseResult = ImageInline.Parse(markdown, pos, end); break; case InlineParseMethod.Emoji: parseResult = EmojiInline.Parse(markdown, pos, end); break; } if (parseResult != null) { return(parseResult); } } } } // If we didn't find any elements we have a normal text block. // Let us consume the entire range. return(new InlineParseResult(TextRunInline.Parse(markdown, start, end), start, end)); }
/// <summary> /// Renders a superscript element. /// </summary> /// <param name="element"> The parsed inline element to render. </param> /// <param name="context"> Persistent state. </param> protected abstract void RenderSuperscriptRun(SuperscriptTextInline element, IRenderContext context);
protected override void RenderSuperscriptRun(SuperscriptTextInline element, IRenderContext context) { //throw new NotImplementedException(); }
protected override void RenderSuperscriptRun(SuperscriptTextInline element, IRenderContext context) { }
/// <summary> /// Renders a link element /// </summary> /// <param name="inlineCollection"> The list to add to. </param> /// <param name="element"> The parsed inline element to render. </param> /// <param name="parent"> The container element. </param> /// <param name="context"> Persistent state. </param> private void RenderMarkdownLink(InlineCollection inlineCollection, MarkdownLinkInline element, TextElement parent, RenderContext context) { // Avoid crash when link text is empty. if (element.Inlines.Count == 0) return; // Attempt to resolve references. element.ResolveReference(this.document); if (element.Url == null) { // The element couldn't be resolved, just render it as text. RenderInlineChildren(inlineCollection, element.Inlines, parent, context); return; } // HACK: Superscript is not allowed within a hyperlink. But if we switch it around, so // that the superscript is outside the hyperlink, then it will render correctly. // This assumes that the entire hyperlink is to be rendered as superscript. if (AllTextIsSuperscript(element) == false) { // Regular ol' hyperlink. var link = new Hyperlink(); // Register the link this.linkRegister.RegisterNewHyperLink(link, element.Url); // Remove superscripts. RemoveSuperscriptRuns(element, insertCaret: true); // Render the children into the link inline. var childContext = context.Clone(); childContext.WithinHyperlink = true; RenderInlineChildren(link.Inlines, element.Inlines, link, childContext); context.TrimLeadingWhitespace = childContext.TrimLeadingWhitespace; // Add it to the current inlines inlineCollection.Add(link); } else { // THE HACK IS ON! // Create a fake superscript element. var fakeSuperscript = new SuperscriptTextInline(); fakeSuperscript.Inlines = new List<MarkdownInline> { element }; // Remove superscripts. RemoveSuperscriptRuns(element, insertCaret: false); // Now render it. RenderSuperscriptRun(inlineCollection, fakeSuperscript, parent, context); } }