Class: Tabula::Extraction::LineExtractor::AppendRectangleToPathOperator

Inherits:
OperatorProcessor
  • Object
show all
Defined in:
lib/tabula/pdf_line_extractor.rb

Instance Method Summary collapse

Instance Method Details

#process(operator, arguments) ⇒ Object 



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# File 'lib/tabula/pdf_line_extractor.rb', line 106

def process(operator, arguments)

  drawer = self.context
  finalX, finalY, finalW, finalH = arguments.to_array.map(&:floatValue)

  ppos = drawer.TransformedPoint(finalX, finalY)
  psize = drawer.ScaledPoint(finalW, finalH)

  finalY = ppos.getY - psize.getY
  if finalY < 0
    finalY = 0
  end

  width = psize.getX.abs
  height = psize.getY.abs

  lines = if width > height && height < 2 # horizontal line, "thin" rectangle.
            [java.awt.geom.Line2D::Float.new(ppos.getX, finalY + psize.getY/2, ppos.getX + psize.getX, finalY + psize.getY/2)]
          elsif width < height && width < 2 # vertical line, "thin" rectangle
            [java.awt.geom.Line2D::Float.new(ppos.getX + psize.getX/2, finalY, ppos.getX + psize.getX/2, finalY + psize.getY)]
          else
            # add every edge of the rectangle to drawer.rulings
            [java.awt.geom.Line2D::Float.new(ppos.getX, finalY, ppos.getX + psize.getX, finalY),
             java.awt.geom.Line2D::Float.new(ppos.getX, finalY, ppos.getX, finalY + psize.getY),
             java.awt.geom.Line2D::Float.new(ppos.getX+psize.getX, finalY, ppos.getX + psize.getX, finalY + psize.getY),
             java.awt.geom.Line2D::Float.new(ppos.getX, finalY+psize.getY, ppos.getX + psize.getX, finalY + psize.getY)]
          end

  drawer.currentPath += lines.select { |l| l.horizontal? or l.vertical? }

end