public static RuleText ValidateDefaultRule(this RichTextBlock richTextBlock, RuleText currentRule)
{
if (currentRule == null)
{
currentRule = new RuleText();
currentRule.IsUnMatched = true;
}
if (!currentRule.FontStyleSet)
{
currentRule.FontStyle = richTextBlock.FontStyle;
}
if (!currentRule.FontWeightSet)
{
currentRule.FontWeight = richTextBlock.FontWeight;
}
if (currentRule.FontFamily == null)
{
currentRule.FontFamily = richTextBlock.FontFamily;
}
if (!currentRule.FontStretchSet)
{
currentRule.FontStretch = richTextBlock.FontStretch;
}
if (currentRule.Background == null)
{
currentRule.Background = richTextBlock.Background;
}
if (currentRule.Foreground == null)
{
currentRule.Foreground = richTextBlock.Foreground;
}
if (!currentRule.FontSizeSet)
{
currentRule.FontSize = richTextBlock.FontSize;
}
return(currentRule);
}
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 List <RuleText> ParserRule(ref string text, Func <string, List <RuleText> > indentParser)
{
var start = Rule.Start;
var end = Rule.End;
BackStart = Rule.Start;
BackEnd = Rule.End;
if (!string.IsNullOrEmpty(start))
{
RegexInvalidateChar.ForEach(o => start = start.Replace(o, @"\" + o));
}
if (!string.IsNullOrEmpty(end))
{
RegexInvalidateChar.ForEach(o => end = end.Replace(o, @"\" + o));
}
string match = "";
if (Rule.Regex != null)
{
match = Rule.Regex;
}
else
{
match = $"(?<={start}).*?(?={end})";
}
var r = new List <RuleText>();
try
{
if (Regex.IsMatch(text, match))
{
var result = Regex.Matches(text, match);
foreach (Match rc in result)
{
var rt = new RuleText();
rt.IsUnMatched = false;
rt.OffsetWithMark = rc.Index - (BackStart == null ? 0 : BackStart.Length);
rt.FontStyle = Rule.FontStyle;
rt.FontSize = Rule.FontSize;
rt.Foreground = Rule.Foreground;
rt.Background = Rule.Background;
rt.Value = rc.Value;
var tempValue = rc.Value.TrimStart(SpaceChar);
rt.Offset = rc.Index + rc.Value.Length - tempValue.Length;
rt.Length = rc.Length;
rt.LengthWithMark = rc.Index + rc.Length + (BackEnd == null ? 0 : BackEnd.Length);
if (rc.Value != text)
{
var rule = indentParser(rc.Value);
if (rule.Any())
{
rt.Childs = rule;
}
}
r.Add(rt);
text = text.Substring(0, rt.OffsetWithMark) +
"".PadLeft(rt.LengthWithMark - rt.OffsetWithMark, SpaceChar) +
text.Substring(rt.LengthWithMark, text.Length - rt.LengthWithMark);
}
}
}
catch
{
}
return(r);
}
