Misc font parser refactoring

lib/context2d.js

@@ -48,7 +48,7 @@ var weights = 'normal|bold|bolder|lighter|[1-9]00'
 var fontre = new RegExp('^ *'
   + '(?:(' + weights + ') *)?'
   + '(?:(' + styles + ') *)?'
-  + '(\\d+)(' + units + ') *'
+  + '([\\d\\.]+)(' + units + ') *'
   + '((?:' + string + ')( *, *(?:' + string + '))*)'
   );
 
@@ -96,7 +96,7 @@ var parseFont = exports.parseFont = function(str){
   // Populate font object
   font.weight = captures[1] || 'normal';
   font.style = captures[2] || 'normal';
-  font.size = parseInt(captures[3], 10);
+  font.size = parseFloat(captures[3]);
   font.unit = captures[4];
   font.family = captures[5];
 

test/canvas.test.js

@@ -56,6 +56,8 @@ module.exports = {
       , { size: 20, unit: 'px', family: 'Arial' }
       , '20pt Arial'
       , { size: 20, unit: 'pt', family: 'Arial' }
+      , '20.5pt Arial'
+      , { size: 20.5, unit: 'pt', family: 'Arial' }
       , '20% Arial'
       , { size: 20, unit: '%', family: 'Arial' }
       , '20mm Arial'