Method: RBPDF#Annotation

Defined in:
lib/rbpdf.rb

#Annotation(x, y, w, h, text, opt = {'Subtype'=>'Text'}, spaces = 0) ⇒ Object Also known as: annotation

Puts a markup annotation on a rectangular area of the page.

  • !!!!THE ANNOTATION SUPPORT IS NOT YET FULLY IMPLEMENTED !!!!

@param float :x

Abscissa of the upper-left corner of the rectangle

@param float :y

Ordinate of the upper-left corner of the rectangle

@param float :w

Width of the rectangle

@param float :h

Height of the rectangle

@param mixed :text

annotation text or alternate content

@param array :opt

array of options (see section 8.4 of PDF reference 1.7).

@param int :spaces

number of spaces on the text to link

@access public
@since 4.0.018 (2008-08-06)


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# File 'lib/rbpdf.rb', line 3051

def Annotation(x, y, w, h, text, opt={'Subtype'=>'Text'}, spaces=0)
  x = @x if x == ''
  y = @y if y == ''

  # recalculate coordinates to account for graphic transformations
  if !@transfmatrix.nil?
    @transfmatrix_key.downto(1) do |i|
      maxid = @transfmatrix[i].length - 1
      maxid.downto(0) do |j|
        ctm = @transfmatrix[i][j]
        if !ctm['a'].nil?
          x = x * @k
          y = (@h - y) * @k
          w = w * @k
          h = h * @k
          # top left
          xt = x
          yt = y
          x1 = (ctm['a'] * xt) + (ctm['c'] * yt) + ctm['e']
          y1 = (ctm['b'] * xt) + (ctm['d'] * yt) + ctm['f']
          # top right
          xt = x + w
          yt = y
          x2 = (ctm['a'] * xt) + (ctm['c'] * yt) + ctm['e']
          y2 = (ctm['b'] * xt) + (ctm['d'] * yt) + ctm['f']
          # bottom left
          xt = x
          yt = y - h
          x3 = (ctm['a'] * xt) + (ctm['c'] * yt) + ctm['e']
          y3 = (ctm['b'] * xt) + (ctm['d'] * yt) + ctm['f']
          # bottom right
          xt = x + w
          yt = y - h
          x4 = (ctm['a'] * xt) + (ctm['c'] * yt) + ctm['e']
          y4 = (ctm['b'] * xt) + (ctm['d'] * yt) + ctm['f']
          # new coordinates (rectangle area)
          x = [x1, x2, x3, x4].min
          y = [y1, y2, y3, y4].max
          w = ([x1, x2, x3, x4].max - x) / @k
          h = (y - [y1, y2, y3, y4].min) / @k
          x = x / @k
          y = @h - (y / @k)
        end
      end
    end
  end
  if @page <= 0
    page = 1
  else
    page = @page
  end
  @page_annots[page] ||= []
  @page_annots[page].push 'x' => x, 'y' => y, 'w' => w, 'h' => h, 'txt' => text, 'opt' => opt, 'numspaces' => spaces
  if ((opt['Subtype'] == 'FileAttachment') or (opt['Subtype'] == 'Sound')) and !empty_string(opt['FS']) and File.exist?(opt['FS']) and @embeddedfiles[File.basename(opt['FS'])].nil?
    @embeddedfiles[File.basename(opt['FS'])] = {'file' => opt['FS'], 'n' => (@embeddedfiles.length + @embedded_start_obj_id)}
  end
  # Add widgets annotation's icons
  if opt['mk'] and opt['mk']['i'] and File.exist?(opt['mk']['i'])
    Image(opt['mk']['i'], '', '', 10, 10, '', '', '', false, 300, '', false, false, 0, false, true)
  end
  if opt['mk'] and opt['mk']['ri'] and File.exist?(opt['mk']['ri'])
    Image(opt['mk']['ri'], '', '', 0, 0, '', '', '', false, 300, '', false, false, 0, false, true)
  end
  if opt['mk'] and opt['mk']['ix'] and File.exist?(opt['mk']['ix'])
    Image(opt['mk']['ix'], '', '', 0, 0, '', '', '', false, 300, '', false, false, 0, false, true)
  end
  @annot_obj_id += 1
end