added GNU Free Font to be used by sales PDFs

Author: rossmc

app/code/Magento/Sales/Model/Order/Pdf/AbstractPdf.php

@@ -861,7 +861,7 @@ protected function _drawItem(
     protected function _setFontRegular($object, $size = 7)
     {
         $font = \Zend_Pdf_Font::fontWithPath(
-            $this->_rootDirectory->getAbsolutePath('lib/internal/LinLibertineFont/LinLibertine_Re-4.4.1.ttf')
+            $this->_rootDirectory->getAbsolutePath('lib/internal/GnuFreeFont/FreeSerif.ttf')
         );
         $object->setFont($font, $size);
         return $font;
@@ -877,7 +877,7 @@ protected function _setFontRegular($object, $size = 7)
     protected function _setFontBold($object, $size = 7)
     {
         $font = \Zend_Pdf_Font::fontWithPath(
-            $this->_rootDirectory->getAbsolutePath('lib/internal/LinLibertineFont/LinLibertine_Bd-2.8.1.ttf')
+            $this->_rootDirectory->getAbsolutePath('lib/internal/GnuFreeFont/FreeSerifBold.ttf')
         );
         $object->setFont($font, $size);
         return $font;
@@ -893,7 +893,7 @@ protected function _setFontBold($object, $size = 7)
     protected function _setFontItalic($object, $size = 7)
     {
         $font = \Zend_Pdf_Font::fontWithPath(
-            $this->_rootDirectory->getAbsolutePath('lib/internal/LinLibertineFont/LinLibertine_It-2.8.2.ttf')
+            $this->_rootDirectory->getAbsolutePath('lib/internal/GnuFreeFont/FreeSerifItalic.ttf')
         );
         $object->setFont($font, $size);
         return $font;

app/code/Magento/Sales/Model/Order/Pdf/Items/AbstractItems.php

@@ -338,7 +338,7 @@ public function getItemOptions()
     protected function _setFontRegular($size = 7)
     {
         $font = \Zend_Pdf_Font::fontWithPath(
-            $this->_rootDirectory->getAbsolutePath('lib/internal/LinLibertineFont/LinLibertine_Re-4.4.1.ttf')
+            $this->_rootDirectory->getAbsolutePath('lib/internal/GnuFreeFont/FreeSerif.ttf')
         );
         $this->getPage()->setFont($font, $size);
         return $font;
@@ -353,7 +353,7 @@ protected function _setFontRegular($size = 7)
     protected function _setFontBold($size = 7)
     {
         $font = \Zend_Pdf_Font::fontWithPath(
-            $this->_rootDirectory->getAbsolutePath('lib/internal/LinLibertineFont/LinLibertine_Bd-2.8.1.ttf')
+            $this->_rootDirectory->getAbsolutePath('lib/internal/GnuFreeFont/FreeSerifBold.ttf')
         );
         $this->getPage()->setFont($font, $size);
         return $font;
@@ -368,7 +368,7 @@ protected function _setFontBold($size = 7)
     protected function _setFontItalic($size = 7)
     {
         $font = \Zend_Pdf_Font::fontWithPath(
-            $this->_rootDirectory->getAbsolutePath('lib/internal/LinLibertineFont/LinLibertine_It-2.8.2.ttf')
+            $this->_rootDirectory->getAbsolutePath('lib/internal/GnuFreeFont/FreeSerifItalic.ttf')
         );
         $this->getPage()->setFont($font, $size);
         return $font;