/// <summary>
/// Renders a code element.
/// </summary>
protected override void RenderCode(CodeBlock element, IRenderContext context)
{
if (!(context is BlockCollectionRenderContext localContext))
{
throw new RenderContextIncorrectException();
}
var blockCollection = localContext.BlockCollection;
var brush = localContext.Foreground;
if (CodeForeground != null && !localContext.OverrideForeground)
{
brush = CodeForeground;
}
var paragraph = new Paragraph
{
FontFamily = CodeFontFamily ?? FontFamily,
Foreground = brush,
LineHeight = FontSize * 1.4,
Background = CodeBackground,
BorderBrush = CodeBorderBrush,
BorderThickness = CodeBorderThickness,
Padding = CodePadding,
Margin = CodeMargin
};
var hasCustomSyntax = CodeBlockResolver.ParseSyntax(paragraph.Inlines, element.Text, element.CodeLanguage);
if (!hasCustomSyntax)
{
paragraph.Inlines.Add(new Run {
Text = element.Text
});
}
blockCollection.Add(paragraph);
}
/// <summary>
/// Renders a code element.
/// </summary>
protected override void RenderCode(CodeBlock element, IRenderContext context)
{
if (!(context is UIElementCollectionRenderContext localContext))
{
throw new RenderContextIncorrectException();
}
var blockUIElementCollection = localContext.BlockUIElementCollection;
var brush = localContext.Foreground;
if (CodeForeground != null && !localContext.OverrideForeground)
{
brush = CodeForeground;
}
var textBlock = new RichTextBlock
{
FontFamily = CodeFontFamily ?? FontFamily,
Foreground = brush,
LineHeight = FontSize * 1.4,
FlowDirection = FlowDirection
};
textBlock.PointerWheelChanged += Preventative_PointerWheelChanged;
var paragraph = new Paragraph();
textBlock.Blocks.Add(paragraph);
// Allows external Syntax Highlighting
var hasCustomSyntax = CodeBlockResolver.ParseSyntax(paragraph.Inlines, element.Text, element.CodeLanguage);
if (!hasCustomSyntax)
{
paragraph.Inlines.Add(new Run {
Text = element.Text
});
}
// Ensures that Code has Horizontal Scroll and doesn't wrap.
var viewer = new ScrollViewer
{
Background = CodeBackground,
BorderBrush = CodeBorderBrush,
BorderThickness = CodeBorderThickness,
Padding = CodePadding,
Margin = CodeMargin,
Content = textBlock
};
if (!WrapCodeBlock)
{
viewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
viewer.HorizontalScrollMode = ScrollMode.Auto;
viewer.VerticalScrollMode = ScrollMode.Disabled;
viewer.VerticalScrollBarVisibility = ScrollBarVisibility.Disabled;
}
// Add it to the blocks
blockUIElementCollection.Add(viewer);
}
