From 69b0855e471e92ede45c4557fd6b4c409b546c8f Mon Sep 17 00:00:00 2001
From: Chris Babiak <cbabiak@rhumbix.com>
Date: Wed, 2 May 2018 11:42:17 -0700
Subject: [PATCH] add fillInvert style option for SparklinesLine fill

---
 src/SparklinesLine.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/SparklinesLine.js b/src/SparklinesLine.js
index 42f6d7a..4c8566d 100644
--- a/src/SparklinesLine.js
+++ b/src/SparklinesLine.js
@@ -15,13 +15,15 @@ export default class SparklinesLine extends React.Component {
   render() {
     const { data, points, width, height, margin, color, style, onMouseMove } = this.props;
 
+    const fillInvert = style.fillInvert ? style.fillInvert : false
+    
     const linePoints = points.map(p => [p.x, p.y]).reduce((a, b) => a.concat(b));
 
     const closePolyPoints = [
       points[points.length - 1].x,
-      height - margin,
+      fillInvert ? margin : height - margin,
       margin,
-      height - margin,
+      fillInvert ? margin : height - margin,
       margin,
       points[0].y,
     ];