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   1 <html><head><title>Roo/lib/Region.js</title><link rel="stylesheet" type="text/css" href="../../css/highlight-js.css"/></head><body class="highlightpage"><code class="jsdoc-pretty"><span class="jsdoc-comment">/*
   2  * Portions of this file are based on pieces of Yahoo User Interface Library
   3  * Copyright (c) 2007, Yahoo! Inc. All rights reserved.
   4  * YUI licensed under the BSD License:
   5  * http://developer.yahoo.net/yui/license.txt
   6  * &lt;script type=&quot;text/javascript&quot;&gt;
   7  *
   8  */
   9
  10 </span><span class="jsdoc-var">Roo.lib.Region </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">) {
  11     </span><span class="jsdoc-var">this.top </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">;
  12     </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">[1] = </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">;
  13     </span><span class="jsdoc-var">this.right </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">;
  14     </span><span class="jsdoc-var">this.bottom </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">;
  15     </span><span class="jsdoc-var">this.left </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">;
  16     </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">[0] = </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">;
  17 };
  18
  19
  20 </span><span class="jsdoc-var">Roo.lib.Region.prototype </span><span class="jsdoc-syntax">= {
  21     </span><span class="jsdoc-var">contains </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">region</span><span class="jsdoc-syntax">) {
  22         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">( </span><span class="jsdoc-var">region.left </span><span class="jsdoc-syntax">&gt;= </span><span class="jsdoc-var">this.left </span><span class="jsdoc-syntax">&amp;&amp;
  23                  </span><span class="jsdoc-var">region.right </span><span class="jsdoc-syntax">&lt;= </span><span class="jsdoc-var">this.right </span><span class="jsdoc-syntax">&amp;&amp;
  24                  </span><span class="jsdoc-var">region.top </span><span class="jsdoc-syntax">&gt;= </span><span class="jsdoc-var">this.top </span><span class="jsdoc-syntax">&amp;&amp;
  25                  </span><span class="jsdoc-var">region.bottom </span><span class="jsdoc-syntax">&lt;= </span><span class="jsdoc-var">this.bottom    </span><span class="jsdoc-syntax">);
  26
  27     },
  28
  29     </span><span class="jsdoc-var">getArea </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">() {
  30         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">( (</span><span class="jsdoc-var">this.bottom </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">this.top</span><span class="jsdoc-syntax">) * (</span><span class="jsdoc-var">this.right </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">this.left</span><span class="jsdoc-syntax">) );
  31     },
  32
  33     </span><span class="jsdoc-var">intersect </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">region</span><span class="jsdoc-syntax">) {
  34         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.max</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.top</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.top</span><span class="jsdoc-syntax">);
  35         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">r </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.min</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.right</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.right</span><span class="jsdoc-syntax">);
  36         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">b </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.min</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.bottom</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.bottom</span><span class="jsdoc-syntax">);
  37         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">l </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.max</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.left</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.left</span><span class="jsdoc-syntax">);
  38
  39         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">b </span><span class="jsdoc-syntax">&gt;= </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">&amp;&amp; </span><span class="jsdoc-var">r </span><span class="jsdoc-syntax">&gt;= </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">) {
  40             </span><span class="jsdoc-keyword">return new </span><span class="jsdoc-var">Roo.lib.Region</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">);
  41         } </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
  42             </span><span class="jsdoc-keyword">return null</span><span class="jsdoc-syntax">;
  43         }
  44     },
  45     </span><span class="jsdoc-var">union </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">region</span><span class="jsdoc-syntax">) {
  46         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.min</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.top</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.top</span><span class="jsdoc-syntax">);
  47         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">r </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.max</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.right</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.right</span><span class="jsdoc-syntax">);
  48         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">b </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.max</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.bottom</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.bottom</span><span class="jsdoc-syntax">);
  49         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">l </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.min</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.left</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">region.left</span><span class="jsdoc-syntax">);
  50
  51         </span><span class="jsdoc-keyword">return new </span><span class="jsdoc-var">Roo.lib.Region</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">);
  52     },
  53
  54     </span><span class="jsdoc-var">adjust </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">) {
  55         </span><span class="jsdoc-var">this.top </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">;
  56         </span><span class="jsdoc-var">this.left </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">;
  57         </span><span class="jsdoc-var">this.right </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">;
  58         </span><span class="jsdoc-var">this.bottom </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">;
  59         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">;
  60     }
  61 };
  62
  63 </span><span class="jsdoc-var">Roo.lib.Region.getRegion </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">) {
  64     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">p </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Roo.lib.Dom.getXY</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">);
  65
  66     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">p</span><span class="jsdoc-syntax">[1];
  67     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">r </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">p</span><span class="jsdoc-syntax">[0] + </span><span class="jsdoc-var">el.offsetWidth</span><span class="jsdoc-syntax">;
  68     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">b </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">p</span><span class="jsdoc-syntax">[1] + </span><span class="jsdoc-var">el.offsetHeight</span><span class="jsdoc-syntax">;
  69     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">l </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">p</span><span class="jsdoc-syntax">[0];
  70
  71     </span><span class="jsdoc-keyword">return new </span><span class="jsdoc-var">Roo.lib.Region</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">r</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">b</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">l</span><span class="jsdoc-syntax">);
  72 };
  73 </span></code></body></html>