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commit 4d0af10b8d71c8624a357127acf6f77218b59781
parent 3ba60663dfc6efd0269b1aab5250549e6fe5f5e8
Author: Davide P. Cervone <dpvc@union.edu>
Date:   Mon, 25 Jan 2016 12:02:24 -0500

If measurements can't be taken in getHDW(), move the test elements to the document.body instead in hopes that it is visible.  Resolves issue #1353.

Diffstat:
M
unpacked/jax/output/CommonHTML/jax.js
 | 
11
+++++++++--

1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/unpacked/jax/output/CommonHTML/jax.js b/unpacked/jax/output/CommonHTML/jax.js
@@ -858,10 +858,17 @@
       var test2 = CHTML.addElement(CHTML.CHTMLnode,"mjx-chartest",{className:name},[["mjx-char",{style:styles},[c,["mjx-box"]]]]);
       test1.firstChild.style.fontSize = test2.firstChild.style.fontSize = "";
       var em = 5*CHTML.em;
-      var d = (test2.offsetHeight-1000)/em;
-      var w = test1.offsetWidth/em, h = test1.offsetHeight/em - d;
+      var H1 = test1.offsetHeight, H2 = test2.offsetHeight, W = test1.offsetWidth;
       CHTML.CHTMLnode.removeChild(test1);
       CHTML.CHTMLnode.removeChild(test2);
+      if (H2 === 0) {
+        em = 5*CHTML.defaultEm;
+        var test = document.body.appendChild(document.createElement("div"));
+        test.appendChild(test1); test.appendChild(test2);
+        H1 = test1.offsetHeight, H2 = test2.offsetHeight, W = test1.offsetWidth;
+        document.body.removeChild(test);
+      }
+      var d = (H2-1000)/em, w = W/em, h = H1/em - d;
       return {h:h, d:d, w:w}
     },