Highlight currently visited section.

2017-05-16 03:12:43 -04:00
parent 7a06f0f3bf
commit 9cbbd8af65
3 changed files with 39 additions and 0 deletions
--- a/docs/_static/custom.js
+++ b/docs/_static/custom.js
@ -0,0 +1,31 @@
+$(document).ready(function () {
+  var sections = $('div.section');
+  var activeLink = null;
+  var bottomHeightThreshold = $(document).height() - 30;
+
+  $(window).scroll(function (event) {
+    var distanceFromTop = $(this).scrollTop();
+    var currentSection = null;
+
+    if(distanceFromTop + window.innerHeight > bottomHeightThreshold) {
+      currentSection = $(sections[sections.length - 1]);
+    }
+    else {
+      sections.each(function () {
+        var section = $(this);
+        if (section.offset().top - 1 < distanceFromTop) {
+          currentSection = section;
+        }
+      });
+    }
+
+    if (activeLink) {
+      activeLink.parent().removeClass('active');
+    }
+
+    if (currentSection) {
+      activeLink = $('.sphinxsidebar a[href="#' + currentSection.attr('id') + '"]');
+      activeLink.parent().addClass('active');
+    }
+  });
+});