www

commit a26b6426feaffaddec688d0ef479956f3dedca33
parent a05227995c36a9db0e5832e80eb7549073be7d78
Author: Davide P. Cervone <dpvc@union.edu>
Date:   Fri, 27 Feb 2015 10:35:06 -0500

Make bounding boxes for character based on line-height:0 rather than line-height:normal (the other varried too much from browser to browser and failed to match the internal dimensions).  The HFUZZ and DFUZZ may need to be adjusted, and may need to be made browser specific (argh), but that might be able to be done through CSS.

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

1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/unpacked/jax/output/CommonHTML/jax.js b/unpacked/jax/output/CommonHTML/jax.js
@@ -33,7 +33,8 @@
   var EVENT, TOUCH, HOVER; // filled in later
 
   var SCRIPTFACTOR = Math.sqrt(1/2),
-      AXISHEIGHT = .25;
+      AXISHEIGHT = .25,
+      HFUZZ = .05, DFUZZ = 0;  // adjustments to bounding box of character boxes
 
   var STYLES = {
     ".MJXc-script": {"font-size":SCRIPTFACTOR+"em"},
@@ -60,7 +61,7 @@
     ".MJXc-math span": {"display":"inline-block"},
     ".MJXc-box":  {"display":"block!important", "text-align":"center"},
     ".MJXc-rule": {"display":"block!important", "margin-top":"1px"},
-    ".MJXc-char": {"display":"block!important","line-height":"normal"},
+    ".MJXc-char": {"display":"block!important"},
 
     ".MJXc-mfrac": {"margin":"0 .125em", "vertical-align":AXISHEIGHT+"em", 
                     "display":"inline-table!important", "text-align":"center"},
@@ -686,8 +687,10 @@
         if (bbox.r === -BIGDIMEN) bbox.r = 0;
         if (bbox.H === -BIGDIMEN) bbox.H = .8;
         if (bbox.D === -BIGDIMEN) bbox.D = .2;
-        span.firstChild.style.marginTop = CHTML.Em(bbox.h-bbox.H);
-        span.firstChild.style.marginBottom = CHTML.Em(bbox.d-bbox.D);
+        bbox.h += HFUZZ; bbox.d += DFUZZ;
+        var a = (bbox.H-bbox.D)/2;  // center of font (line-height:0)
+        span.firstChild.style.marginTop = CHTML.Em(bbox.h-a);
+        span.firstChild.style.marginBottom = CHTML.Em(bbox.d+a);
       },
 
       CHTMLbboxFor: function (n) {