3 <title>The source code</title>
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7 <body onload="prettyPrint();">
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8 <pre class="prettyprint lang-js"> Ext.lib.Region = function(t, r, b, l) {
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18 Ext.lib.Region.prototype = {
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19 contains : function(region) {
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21 return ( region.left >= me.left &&
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22 region.right <= me.right &&
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23 region.top >= me.top &&
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24 region.bottom <= me.bottom );
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28 getArea : function() {
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30 return ( (me.bottom - me.top) * (me.right - me.left) );
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33 intersect : function(region) {
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35 t = Math.max(me.top, region.top),
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36 r = Math.min(me.right, region.right),
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37 b = Math.min(me.bottom, region.bottom),
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38 l = Math.max(me.left, region.left);
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40 if (b >= t && r >= l) {
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41 return new Ext.lib.Region(t, r, b, l);
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45 union : function(region) {
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47 t = Math.min(me.top, region.top),
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48 r = Math.max(me.right, region.right),
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49 b = Math.max(me.bottom, region.bottom),
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50 l = Math.min(me.left, region.left);
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52 return new Ext.lib.Region(t, r, b, l);
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55 constrainTo : function(r) {
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57 me.top = me.top.constrain(r.top, r.bottom);
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58 me.bottom = me.bottom.constrain(r.top, r.bottom);
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59 me.left = me.left.constrain(r.left, r.right);
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60 me.right = me.right.constrain(r.left, r.right);
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64 adjust : function(t, l, b, r) {
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74 Ext.lib.Region.getRegion = function(el) {
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75 var p = Ext.lib.Dom.getXY(el),
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77 r = p[0] + el.offsetWidth,
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78 b = p[1] + el.offsetHeight,
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81 return new Ext.lib.Region(t, r, b, l);
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