public static (float Llx, float Lly, float width, float height) GetPdfCoords(this Pdf.IWord target)
{
var pageWidth = target.Parent.Width;
var pageHeight = target.Parent.Height;
var llx = target.XMin;
var lly = pageHeight - target.YMax;
var width = target.XMax - target.XMin;
var height = target.YMax - target.YMin;
return(llx, lly, width, height);
}
public IEnumerable <Pdf.IWord> Aggregate(IEnumerable <Pdf.IWord> words)
{
Pdf.IWord oldCandidate = null;
Pdf.IWord paragraphCandidate = null;
foreach (var word in words)
{
if (word.Text.StartsWith("§"))
{
paragraphCandidate = word;
}
else if (paragraphCandidate != null)
{
var candidate = $"{paragraphCandidate.Text} {word.Text}";
if (EqualsVaguely(paragraphCandidate.YMin, word.YMin) && EqualsVaguely(paragraphCandidate.YMax, word.YMax) && ValidChain.IsMatch(candidate))
{
oldCandidate = paragraphCandidate;
paragraphCandidate = new AggregatedWord
{
Parent = word.Parent,
Text = candidate,
XMax = Math.Max(word.XMax, paragraphCandidate.XMax),
YMax = Math.Max(word.YMax, paragraphCandidate.YMax),
XMin = Math.Min(word.XMin, paragraphCandidate.XMin),
YMin = Math.Min(word.YMin, paragraphCandidate.YMin)
};
}
else
{
if (ValidParagraphExpression.IsMatch(paragraphCandidate.Text))
{
yield return(paragraphCandidate);
}
else if (ValidParagraphExpression.IsMatch(oldCandidate?.Text ?? ""))
{
yield return(oldCandidate);
}
paragraphCandidate = null;
}
}
yield return(word);
}
}
private Rectangle GetAnnotationRect(Rectangle buttonRect, PdfFont font, IAnnotation annotation, Pdf.IWord target)
{
var rectU = GetUpperOrLowerAnnotationRect(buttonRect, font, annotation, target, true);
var rect = rectU;
if (rectU.GetY() + rectU.GetHeight() > target.Parent.Height)
{
var rectL = GetUpperOrLowerAnnotationRect(buttonRect, font, annotation, target, false);
if (rectL.GetY() + rectL.GetHeight() < target.Parent.Height && rectL.GetY() > 0)
{
rect = rectL;
}
}
if (rect.GetX() < 5 && rect.GetX() + 5 < target.Parent.Width)
{
// text is left outside of page but smaller than page plus some margin so move it inside
rect.SetX(5);
}
else
{
var rectMaxX = rect.GetX() + rect.GetWidth();
var delta = rectMaxX + 5 - target.Parent.Width;
if (delta > 0 && rect.GetWidth() < target.Parent.Width)
{
// text is right outside of page but smaller than page so move it inside
rect.SetX(rect.GetX() - delta);
}
}
return(rect);
}
public static (float Llx, float Lly, float Urx, float Ury) GetPdfCoordsIText5(this Pdf.IWord target)
{
var pageWidth = target.Parent.Width;
var pageHeight = target.Parent.Height;
var llx = target.XMin;
var lly = pageHeight - target.YMax;
var urx = target.XMax;
var ury = pageHeight - target.YMin;
return(llx, lly, urx, ury);
}
private Rectangle GetUpperOrLowerAnnotationRect(Rectangle buttonRect, PdfFont font, IAnnotation annotation, Pdf.IWord target, bool upper = true)
{
var contentBounds = GetContentBounds(annotation.Content, target.Parent.Width / 2, font);
var targetWidthHalf = buttonRect.GetWidth() / 2;
var helpWidthHalf = contentBounds.width / 2;
var annotHeight = contentBounds.height + 6;
float annotY;
if (upper)
{
annotY = buttonRect.GetY() + buttonRect.GetHeight() + 5;
}
else
{
annotY = buttonRect.GetY() - annotHeight - 10;
}
var helpRect = new Rectangle(buttonRect.GetX() + targetWidthHalf - helpWidthHalf - 5, annotY, contentBounds.width + 10, annotHeight);
return(helpRect);
}