add page_line() method (dompdf#1702)

src/Adapter/PDFLib.php

@@ -762,6 +762,25 @@ public function line($x1, $y1, $x2, $y2, $color, $width, $style = null)
         $this->_set_line_transparency("Normal", $this->_current_opacity);
     }
 
+    /**
+     * Draw line at the specified coordinates on every page.
+     *
+     * See {@link Style::munge_color()} for the format of the colour array.
+     *
+     * @param float $x1
+     * @param float $y1
+     * @param float $x2
+     * @param float $y2
+     * @param array $color
+     * @param float $width
+     * @param array $style optional
+     */
+    public function page_line($x1, $y1, $x2, $y2, $color, $width, $style = array())
+    {
+        $_t = 'line';
+        $this->_page_text[] = compact('_t', 'x1', 'y1', 'x2', 'y2', 'color', 'width', 'style');
+    }
+
     /**
      * @param float $x1
      * @param float $y1
@@ -1259,6 +1278,11 @@ protected function _add_page_text()
                         }
                         $eval->evaluate($code, array('PAGE_NUM' => $p, 'PAGE_COUNT' => $this->_page_count));
                         break;
+
+                    case 'line':
+                        $this->line( $x1, $y1, $x2, $y2, $color, $width, $style );
+                        break;
+
                 }
             }