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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 'use strict';
      6 
      7 /**
      8  * @fileoverview QuadStackViewer controls the content and viewing angle a
      9  * QuadStack.
     10  */
     11 
     12 base.require('ui.quad_stack');
     13 
     14 base.exportTo('ui', function() {
     15   /**
     16    * @constructor
     17    */
     18   var QuadStackViewer = ui.define('quad-stack-viewer');
     19 
     20   QuadStackViewer.prototype = {
     21     __proto__: HTMLUnknownElement.prototype,
     22 
     23     decorate: function() {
     24       this.className = 'quad-stack-viewer';
     25       this.scale_ = 0.25;
     26 
     27       this.quadStack_ = new ui.QuadStack();
     28       this.appendChild(this.quadStack_);
     29 
     30       this.camera_ = new ui.Camera(this.quadStack_);
     31     },
     32 
     33     get quadStack() {
     34       return this.quadStack_;
     35     },
     36 
     37     get scale() {
     38       return this.scale_;
     39     },
     40 
     41     set scale(newValue) {
     42       this.scale_ = newValue;
     43       if (this.quadStack_.viewport)
     44         this.quadStack_.viewport.scale = newValue;
     45     },
     46 
     47     get camera() {
     48       return this.camera_;
     49     }
     50 
     51   };
     52 
     53   return {
     54     QuadStackViewer: QuadStackViewer
     55   };
     56 });
     57