How can I display indian price symble properly in invoice pdf in magento 1.9

1.Download the font that support Indian Rupee symbol. recommended dejavu-sans font.

2.place the font in lib directory.
3.open app/code/core/Mage/Sales/Model/Order/Pdf/Abstract.php and app/code/core/Mage/Sales/Model/Order/Pdf/Items/Abstract.php

and replace
$font = Zend_Pdf_Font::fontWithPath(Mage::getBaseDir() . '/lib/LinLibertineFont/LinLibertine_Re-4.4.1.ttf');

With
$font = Zend_Pdf_Font::fontWithPath(Mage::getBaseDir() . '/lib/dejavu-sans/DejaVuSans.ttf');

(in _setFontRegular(), _setFontBold(), _setFontItalic() functions in both files.)