整理代码

src/core/wrapper/layout/float/float.absolute.horizontal.js

@@ -31,26 +31,29 @@ BI.FloatAbsoluteHorizontalLayout = BI.inherit(BI.Layout, {
             },
             hgap: "50%",
             vgap: o.vgap,
-            lgap: o.lgap,
-            rgap: o.rgap,
             tgap: o.tgap,
-            bgap: o.bgap
+            bgap: o.bgap,
+            // lgap和rgap不传的话内部不会设置left和right
+            lgap: o.lgap,
+            rgap: o.rgap
         };
     },
 
     _formatItems: function (items) {
-        if (this.options.horizontalAlign !== BI.HorizontalAlign.Center) {
+        var o = this.options;
+        if (o.horizontalAlign === BI.HorizontalAlign.Left) {
             return items;
         }
+        var cls = o.horizontalAlign === BI.HorizontalAlign.Right ? "bi-abs-r-x-item" : "bi-abs-c-x-item";
         return BI.map(items, function (i, item) {
             if (!item || BI.isEmptyObject(item)) {
                 return item;
             }
             var el = BI.stripEL(item);
             if (BI.isWidget(el)) {
-                el.element.addClass("bi-abs-c-x-item");
+                el.element.addClass(cls);
             } else {
-                el.cls = (el.cls || "") + "bi-abs-c-x-item";
+                el.cls = (el.cls || "") + cls;
             }
             return item;
         });

src/core/wrapper/layout/float/float.absolute.vertical.js

@@ -33,24 +33,27 @@ BI.FloatAbsoluteVerticalLayout = BI.inherit(BI.Layout, {
             hgap: o.hgap,
             lgap: o.lgap,
             rgap: o.rgap,
+            // tgap和bgap不传的话内部不会设置top和bottom
             tgap: o.tgap,
             bgap: o.bgap
         };
     },
 
     _formatItems: function (items) {
-        if (this.options.verticalAlign !== BI.VerticalAlign.Middle) {
+        var o = this.options;
+        if (o.verticalAlign === BI.VerticalAlign.Top) {
             return items;
         }
+        var cls = o.verticalAlign === BI.VerticalAlign.Bottom ? "bi-abs-b-y-item" : "bi-abs-c-y-item";
         return BI.map(items, function (i, item) {
             if (!item || BI.isEmptyObject(item)) {
                 return item;
             }
             var el = BI.stripEL(item);
             if (BI.isWidget(el)) {
-                el.element.addClass("bi-abs-c-y-item");
+                el.element.addClass(cls);
             } else {
-                el.cls = (el.cls || "") + "bi-abs-c-y-item";
+                el.cls = (el.cls || "") + cls;
             }
             return item;
         });

src/less/core/wrapper/float.absolute.less

@@ -24,4 +24,14 @@
   -webkit-transform: translate(-50%, -50%); /* Safari 和 Chrome */
   -o-transform: translate(-50%, -50%); 	/* Opera */
   transform: translate(-50%, -50%);
-}
+}
+
+.bi-abs-b-y-item {
+  bottom: 0;
+  margin-top: auto;
+}
+
+.bi-abs-r-x-item {
+  right: 0;
+  margin-left: auto;
+}