net/systemeD/halcyon/POI.as

   1 package net.systemeD.halcyon {
   2
   3         import flash.display.*;
   4         import flash.events.*;
   5         import flash.text.AntiAliasType;
   6         import flash.text.GridFitType;
   7         import flash.text.TextField;
   8         import flash.text.TextFormat;
   9     import net.systemeD.halcyon.connection.Node;
  10         import net.systemeD.halcyon.styleparser.*;
  11
  12         public class POI extends Object {
  13
  14         private var node:Node;
  15                 public var map:Map;                                                     // reference to parent map
  16                 public var icon:Bitmap;                                         // instance in display list
  17                 public var name:Sprite;                                         //  |
  18                 private var iconname:String='';                         // name of icon
  19
  20                 public static const DEFAULT_TEXTFIELD_PARAMS:Object = {
  21 //                      embedFonts: true,
  22                         antiAliasType: AntiAliasType.ADVANCED,
  23                         gridFitType: GridFitType.NONE
  24                 };
  25 //              [Embed(source="fonts/DejaVuSans.ttf", fontFamily="DejaVu", fontWeight="normal", mimeType="application/x-font-truetype")]
  26 //              public static var DejaVu:Class;
  27
  28                 public function POI(node:Node, map:Map) {
  29                         this.map = map;
  30                         this.node = node;
  31                         redraw();
  32                 }
  33
  34                 public function redraw():void {
  35                         var tags:Object = node.getTagsCopy();
  36                         // ** apply :hover etc.
  37                         var sl:StyleList=map.ruleset.getStyles(this.node,tags);
  38                         var r:Boolean=false;    // ** rendered
  39                         for (var sublayer:uint=0; sublayer<10; sublayer++) {
  40
  41                                 if (sl.pointStyles[sublayer]) {
  42                                         var s:PointStyle=sl.pointStyles[sublayer];
  43 //                                      if ((s is PointStyle) && s.icon && s.icon!="")
  44                                         r=true;
  45                                         if (s.icon_image!=iconname) {
  46                                                 // 'load' icon (actually just from library)
  47                                                 if (map.ruleset.images[s.icon_image]) {
  48                                                         var loader:Loader = new Loader();
  49                                                         loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadedIcon);
  50                                                         loader.loadBytes(map.ruleset.images[s.icon_image]);
  51                                                         iconname=s.icon_image;
  52                                                 }
  53                                         } else {
  54                                                 // already loaded, so just reposition
  55                                                 updatePosition();
  56                                                 iconname=s.icon_image;
  57                                         }
  58                                 }
  59
  60                                 if (sl.textStyles[sublayer]) {
  61                                         var t:TextStyle=sl.textStyles[sublayer];
  62 //                                      if ((s is TextStyle) && s.tag && tags[s.tag])
  63                                         // create name sprite
  64                                         if (!name) {
  65                                                 name=new Sprite();
  66                                                 var c:DisplayObject=map.getChildAt(12);
  67                                                 Sprite(c).addChild(name);
  68                                         }
  69                                         t.writeNameLabel(name,tags[t.text],map.lon2coord(node.lon),map.latp2coord(node.latp));
  70                                 }
  71                         }
  72                         if (!r && iconname!='') {
  73                                 // not rendered any more, so remove
  74                                 var l:DisplayObject=map.getChildAt(11);
  75                                 Sprite(l).removeChild(icon);
  76                                 iconname='';
  77                         }
  78                 }
  79
  80                 private function loadedIcon(event:Event):void {
  81                         icon = Bitmap(event.target.content);
  82                         var l:DisplayObject=map.getChildAt(11);
  83                         Sprite(l).addChild(icon);
  84                         updatePosition();
  85                 }
  86
  87                 private function updatePosition():void {
  88                         icon.x=map.lon2coord(node.lon)-icon.width/2;
  89                         icon.y=map.latp2coord(node.latp)-icon.height/2;
  90                 }
  91
  92         }
  93 }