无JIRA fix:按钮 textAlign 失效

demo/js/base/button/demo.button.js

@@ -376,6 +376,11 @@ Demo.Button = BI.inherit(BI.Widget, {
                     this.loaded();
                 }, 5 * 1000);
             },
+        }, {
+            type: "bi.button",
+            text: "文字偏左的按钮",
+            textAlign: "left",
+            width: 200,
         }];
 
         return {

src/base/single/button/buttons/button.js

@@ -141,6 +141,7 @@
             // bi.center_adapt 作用：让 hgap 不影响 iconGap。
             BI.createWidget({
                 type: "bi.center_adapt",
+                horizontalAlign: o.textAlign,
                 element: this,
                 hgap: o.hgap,
                 vgap: o.vgap,