allow special value of "initial" for "max" option to avoid increasing…

… font size

README.md

@@ -28,6 +28,8 @@ The FitText directive will also watch the `ng-model` placed on the element, so g
 
 The `data-fittext-max=""` and `data-fittext-min=""` attributes respectfully limit the font size. This can also be set globally in the `fitTextConfigProvider` via `min` and `max`.
 
+You may set `data-fittext-max` to the special value `"initial"` in order to prevent the font size from increasing beyond the CSS-computed style. This requires the `font-size` property to have been either inherited, or applied via a CSS selector. It does not work for inline `font-size` set via an inline `style` attribute. It also requires support for `window.getComputedStyle()` (IE 9+).
+
 #### New lines
 
 To make use of new lines within a single FitText block you will need to use the `data-fittext-nl` attribute on each line wrapper. See the demo page for an example.

src/ng-FitText.js

@@ -40,6 +40,11 @@
           var minFontSize = attrs.fittextMin || config.min || Number.NEGATIVE_INFINITY;
           var maxFontSize = attrs.fittextMax || config.max || Number.POSITIVE_INFINITY;
 
+          if(maxFontSize == 'initial' && window.getComputedStyle) {
+            element[0].style['font-size'] = "";
+            maxFontSize = window.getComputedStyle(element[0])['font-size'];
+          }
+
           var resizer = function() {
             element[0].style.fontSize = '10px';
             var ratio = element[0].offsetHeight / element[0].offsetWidth / nl;