class PrintGraphPaper

Attributes

to_html[R]

Public Class Methods

new(orientation: :portrait, cols: 30, rows: 44, size: '20px', color: ' click to toggle source

# File lib/printgraphpaper.rb, line 13
def initialize(orientation: :portrait, cols: 30, rows: 44, 
               size: '20px', color: '#aaa')

  @orientation, @cols, @rows  = orientation, cols, rows
  @size, @color = size, color
  @to_html = build_html()

end

Private Instance Methods

build_html() click to toggle source

# File lib/printgraphpaper.rb, line 24
  def build_html()

    doc = build_table()
    table = doc.root.xml pretty: true

html=<<EOF
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Graph paper template</title>
<style>

table {}
table, th, td {
  background-color: #{@color};
  border: 1px solid black;
  border-collapse: collapse;
}

td {  background-color: transparent; width: 20px; height: 20px;}

@media print {
  table, th, td {
    border: 1px solid #{@color};
  }

}

</style>
</head>
<body>
#{table}
</body>
</html>
EOF

  end

build_table() click to toggle source

# File lib/printgraphpaper.rb, line 63
def build_table()

  doc = Rexle.new('<table/>')

  @rows.times do

    tr = Rexle::Element.new('tr')

    @cols.times do 
      td = Rexle::Element.new('td', value: '&nbsp;')
      tr.add td
    end

    doc.root.add tr

  end

  doc

end