Upgrade to ExtJS 3.2.0 - Released 03/30/2010

[extjs.git] / src / ext-core / src / adapter / ext-base-region.js

diff --git a/src/ext-core/src/adapter/ext-base-region.js b/src/ext-core/src/adapter/ext-base-region.js
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+++ b/src/ext-core/src/adapter/ext-base-region.js
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+/*!
+ * Ext JS Library 3.2.0
+ * Copyright(c) 2006-2010 Ext JS, Inc.
+ * licensing@extjs.com
+ * http://www.extjs.com/license
+ */
+       Ext.lib.Region = function(t, r, b, l) {
+               var me = this;
+        me.top = t;
+        me[1] = t;
+        me.right = r;
+        me.bottom = b;
+        me.left = l;
+        me[0] = l;
+    };
+
+    Ext.lib.Region.prototype = {
+        contains : function(region) {
+               var me = this;
+            return ( region.left >= me.left &&
+                     region.right <= me.right &&
+                     region.top >= me.top &&
+                     region.bottom <= me.bottom );
+
+        },
+
+        getArea : function() {
+               var me = this;
+            return ( (me.bottom - me.top) * (me.right - me.left) );
+        },
+
+        intersect : function(region) {
+            var me = this,
+               t = Math.max(me.top, region.top),
+               r = Math.min(me.right, region.right),
+               b = Math.min(me.bottom, region.bottom),
+               l = Math.max(me.left, region.left);
+
+            if (b >= t && r >= l) {
+                return new Ext.lib.Region(t, r, b, l);
+            }
+        },
+        
+        union : function(region) {
+               var me = this,
+               t = Math.min(me.top, region.top),
+               r = Math.max(me.right, region.right),
+               b = Math.max(me.bottom, region.bottom),
+               l = Math.min(me.left, region.left);
+
+            return new Ext.lib.Region(t, r, b, l);
+        },
+
+        constrainTo : function(r) {
+               var me = this;
+            me.top = me.top.constrain(r.top, r.bottom);
+            me.bottom = me.bottom.constrain(r.top, r.bottom);
+            me.left = me.left.constrain(r.left, r.right);
+            me.right = me.right.constrain(r.left, r.right);
+            return me;
+        },
+
+        adjust : function(t, l, b, r) {
+               var me = this;
+            me.top += t;
+            me.left += l;
+            me.right += r;
+            me.bottom += b;
+            return me;
+        }
+    };
+
+    Ext.lib.Region.getRegion = function(el) {
+        var p = Ext.lib.Dom.getXY(el),
+               t = p[1],
+               r = p[0] + el.offsetWidth,
+               b = p[1] + el.offsetHeight,
+               l = p[0];
+
+        return new Ext.lib.Region(t, r, b, l);
+    };
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