private bool IsTitle(string lastQuestionHeader, ParagraphPart paragraph, double maxTextSize, double avgTextSize)
{
if (!paragraph.Parts.Any())
{
return(false);
}
var isUnderlined = paragraph.Parts[0] is TextPart textPart2 && textPart2.Style.IsUnderlined == true;
var isRealCenter = paragraph.Style.Justification == Justification.Center;
var isCenter = isRealCenter ||
(!isUnderlined && paragraph.Content.Length - paragraph.Content.TrimStart().Length > 2);
var isBold = paragraph.Parts[0] is TextPart textPart && textPart.Style.IsBold == true;
var isTextSizeLargeEnough = maxTextSize - paragraph.GetAverageTextSize() <= 4;
var isTextLargerThanAvg = paragraph.GetAverageTextSize() > avgTextSize;
var sentences = paragraph.Content.Trim().Split(new char[] { ',', '，', '。', '.' }, StringSplitOptions.RemoveEmptyEntries);
var isPoem = (sentences.Length == 2 && sentences[0].Length == sentences[1].Length) ||
_poemQuestionRegex.IsMatch(lastQuestionHeader);
if (isPoem)
{
return(false);
}
return(((isRealCenter || isBold) && isTextSizeLargeEnough && isTextLargerThanAvg) ||
(isCenter && isBold && isTextSizeLargeEnough) ||
(paragraph.Content.Contains("答案") && (isCenter || isBold)) ||
(isCenter &&
paragraph.Content.Trim().StartsWith("第") &&
paragraph.Content.Trim().Replace(" ", "").Length < 5));
}
public static ParagraphPart TrimStart(this ParagraphPart paragraphPart)
{
var parts = new List <IPart>();
var isStart = true;
foreach (var part in paragraphPart.Parts)
{
if (part is TextPart textPart)
{
if (string.IsNullOrWhiteSpace(textPart.Content))
{
if (isStart)
{
continue;
}
}
else if (isStart)
{
textPart.Content = textPart.Content.TrimStart();
isStart = false;
parts.Add(textPart);
continue;
}
}
parts.Add(part);
}
paragraphPart.Parts = parts;
return(paragraphPart);
}
private NumberNode?ExtractFromParagraph(ParagraphPart paragraph)
{
paragraph = paragraph.TrimStart();
var content = paragraph.Content;
var data = new StringDataView(content);
return(ExtractFromDataView(data, paragraph.Order));
}
public static double GetAverageTextSize(this ParagraphPart paragraphPart)
{
return(paragraphPart.Parts.Where(o => o is TextPart).Average(o => ((TextPart)o).Style.Size));
}