From 97b241f03804cbdccdccb40735ff10fbaf59bbc5 Mon Sep 17 00:00:00 2001
From: stephenshank <sshank314@gmail.com>
Date: Thu, 19 Mar 2020 16:58:59 -0400
Subject: [PATCH] BaseAlignment only draws when pixel is set (bug fix).

---
 package.json                     | 2 +-
 src/components/BaseAlignment.jsx | 5 ++++-
 src/components/SiteAxis.jsx      | 3 +++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 564b6ee..4ae333a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "alignment.js",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "main": "library.js",
   "license": "MIT",
   "dependencies": {
diff --git a/src/components/BaseAlignment.jsx b/src/components/BaseAlignment.jsx
index 23072f9..54bb10c 100644
--- a/src/components/BaseAlignment.jsx
+++ b/src/components/BaseAlignment.jsx
@@ -24,7 +24,10 @@ class BaseAlignment extends Component {
     }
   }
   componentDidUpdate() {
-    this.draw(this.props.x_pixel || 0, this.props.y_pixel || 0);
+    const { x_pixel, y_pixel } = this.props;
+    if (x_pixel != undefined || y_pixel != undefined) {
+      this.draw(x_pixel || 0, y_pixel || 0);
+    }
   }
   draw(x_pixel, y_pixel) {
     if (this.props.disableVerticalScrolling) y_pixel = 0;
diff --git a/src/components/SiteAxis.jsx b/src/components/SiteAxis.jsx
index 0f3c600..4fcc005 100644
--- a/src/components/SiteAxis.jsx
+++ b/src/components/SiteAxis.jsx
@@ -30,6 +30,9 @@ class SiteAxis extends Component {
         $("#alignmentjs-axis-div").scrollLeft(e.detail.x_pixel);
       });
   }
+  componentDidUpdate(nextProps) {
+    $("#alignmentjs-axis-div").scrollLeft(this.props.x_pixel);
+  }
   handleWheel(e) {
     e.preventDefault();
     this.props.scroll_broadcaster.handleWheel(e, this.props.sender);