public static double[] GetCharWidths(this FormattedText formattedText, RichTextBlock richTextBlock, RuleText rule)
{
richTextBlock.ValidateDefaultRule(rule);
var text = formattedText.Text;
var result = new double[text.Length];
for (int i = 0; i < text.Length; i++)
{
var ft = new FormattedText(text[i].ToString(), CultureInfo.CurrentUICulture, richTextBlock.FlowDirection, new Typeface(rule.FontFamily, rule.FontStyle, rule.FontWeight, rule.FontStretch), rule.FontSize, rule.Foreground);
result[i] = ft.Width;
}
return(result);
}
public static FormattedText BuildFormattedText(this RichTextBlock richTextBlock, string value, RuleText currentRule = null)
{
if (currentRule == null)
{
currentRule = richTextBlock.BuildDefaultRule();
}
else
{
richTextBlock.ValidateDefaultRule(currentRule);
}
return(new FormattedText(value, CultureInfo.InvariantCulture,
richTextBlock.FlowDirection,
new Typeface(currentRule.FontFamily, currentRule.FontStyle,
currentRule.FontWeight, currentRule.FontStretch),
currentRule.FontSize, currentRule.Foreground));
}
public static RuleText BuildDefaultRule(this RichTextBlock richTextBlock)
{
return(richTextBlock.ValidateDefaultRule(null));
}