tools/cc-frame-viewer/src/model/layer_tree_impl.js

   1 /* Copyright (c) 2012 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 base.require('base.bbox2');
   8 base.require('model.constants');
   9 base.require('model.layer_impl');
  10
  11 base.exportTo('ccfv.model', function() {
  12
  13   /**
  14    * Represents a cc::LayerTreeImpl
  15    *
  16    * @constructor
  17    */
  18   function LayerTreeImpl(lthi, which_tree) {
  19     this.lthi = lthi;
  20     this.which_tree = which_tree;
  21     this.tiles_ = [];
  22     this.allLayers = [];
  23     this.tileBBox_ = undefined;
  24   };
  25
  26   LayerTreeImpl.prototype = {
  27     setTilesDirty: function() {
  28       this.tiles_ = undefined;
  29       this.tileBBox_ = undefined;
  30     },
  31
  32     get tiles() {
  33       if (!this.tiles_)
  34         this.tiles_ = this.lthi.getTilesForTree(this.which_tree);
  35       return this.tiles_;
  36     },
  37
  38     getOrCreateLayerImpl: function(layerID) {
  39       var layerHistory = this.lthi.history.getOrCreateLayerImplHistory(layerID);
  40       var layer = layerHistory.getOrCreateLayerImplForLTHI(this);
  41       this.allLayers.push(layer);
  42       return layer;
  43     },
  44
  45     get tileBBox() {
  46       if (!this.tileBBox_) {
  47         var bbox = new base.BBox2();
  48         for (var i = 0; i < this.tiles.length; i++) {
  49           var tile = this.tiles[i];
  50           var priority = tile.priority[this.which_tree];
  51           if (!priority.current_screen_quad)
  52             continue;
  53           bbox.addQuad(priority.current_screen_quad);
  54         }
  55         this.tileBBox_ = bbox;
  56       }
  57       return this.tileBBox_;
  58     },
  59
  60   };
  61
  62   return {
  63     LayerTreeImpl: LayerTreeImpl
  64   }
  65 });
  66