/// <summary>
/// Process the page.
/// </summary>
public void Process()
{
var page = document.GetPage(pageNumber);
textElements = new List <TextElement>();
spatialIndex = new RectangleSpatialIndex <TextElement>();
foreach (var letter in page.Letters)
{
string c = letter.Value;
// if c not printable, return
if (!IsPrintable(c))
{
continue;
}
if (c.Equals(NBSP))
{
c = " "; // replace non-breaking space for space
}
double wos = GetExpectedWhitespaceSize(letter); //textPosition.getWidthOfSpace();
TextElement te = new TextElement(GetBbox(letter), letter.Font, letter.PointSize, c, wos, letter.GlyphRectangle.Rotation)
{
letter = letter
};
if (!string.IsNullOrWhiteSpace(c))
{
this.minCharWidth = Math.Min(this.minCharWidth, te.Width);
}
if (!string.IsNullOrWhiteSpace(c))
{
this.minCharHeight = Math.Min(this.minCharHeight, Math.Max(te.Height, 1)); // added by bobld: min height value to 1
}
countHeight++;
totalHeight += Math.Max(te.Height, 1); // added by bobld: min height value to 1
double avgHeight = totalHeight / countHeight;
if (avgHeight > 0 && te.Height >= (avgHeight * AVG_HEIGHT_MULT_THRESHOLD) && (te.GetText()?.Trim().Equals("") != false))
{
continue;
}
textElements.Add(te);
spatialIndex.Add(te);
}
}
/// <summary>
/// Create a new page area.
/// </summary>
/// <param name="area"></param>
/// <param name="rotation"></param>
/// <param name="pageNumber"></param>
/// <param name="pdPage"></param>
/// <param name="doc"></param>
/// <param name="characters"></param>
/// <param name="rulings"></param>
/// <param name="minCharWidth"></param>
/// <param name="minCharHeight"></param>
/// <param name="index"></param>
public PageArea(PdfRectangle area, int rotation, int pageNumber, Page pdPage, PdfDocument doc,
List <TextElement> characters, List <Ruling> rulings,
double minCharWidth, double minCharHeight, RectangleSpatialIndex <TextElement> index) : base(area)
{
this.Rotation = rotation;
this.PageNumber = pageNumber;
this.PdfPage = pdPage;
this.PdfDocument = doc;
this.texts = characters;
this.rulings = rulings;
this.MinCharHeight = minCharHeight;
this.MinCharWidth = minCharWidth;
this.spatial_index = index;
}