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:Sprite;                                         // instance in display list
  17                 public var name:Sprite;                                         //  |
  18                 private var iconname:String='';                         // name of icon
  19                 public var loaded:Boolean=false;
  20
  21                 public static const DEFAULT_TEXTFIELD_PARAMS:Object = {
  22 //                      embedFonts: true,
  23                         antiAliasType: AntiAliasType.ADVANCED,
  24                         gridFitType: GridFitType.NONE
  25                 };
  26 //              [Embed(source="fonts/DejaVuSans.ttf", fontFamily="DejaVu", fontWeight="normal", mimeType="application/x-font-truetype")]
  27 //              public static var DejaVu:Class;
  28
  29                 public function POI(node:Node, map:Map, sl:StyleList=null) {
  30                         this.map = map;
  31                         this.node = node;
  32                         redraw(sl);
  33                 }
  34
  35                 public function redraw(sl:StyleList=null):Boolean {
  36                         var tags:Object = node.getTagsCopy();
  37                         // ** apply :hover etc.
  38                         if (!sl) { sl=map.ruleset.getStyles(this.node,tags); }
  39                         if (!sl.hasStyles()) { return false; }
  40
  41                         var r:Boolean=false;    // ** rendered
  42                         var l:DisplayObject;
  43                         for (var sublayer:uint=0; sublayer<10; sublayer++) {
  44
  45                                 if (sl.pointStyles[sublayer]) {
  46                                         var s:PointStyle=sl.pointStyles[sublayer];
  47                                         r=true;
  48                                         if (s.icon_image!=iconname) {
  49                                                 // 'load' icon (actually just from library)
  50                                                 if (map.ruleset.images[s.icon_image]) {
  51                                                         var loader:Loader = new Loader();
  52                                                         loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadedIcon);
  53                                                         loader.loadBytes(map.ruleset.images[s.icon_image]);
  54                                                         iconname=s.icon_image;
  55                                                 }
  56                                         } else {
  57                                                 // already loaded, so just reposition
  58                                                 updatePosition();
  59                                         }
  60                                 }
  61
  62                                 if (sl.textStyles[sublayer]) {
  63                                         var t:TextStyle=sl.textStyles[sublayer];
  64                                         // create name sprite
  65                                         if (!name) {
  66                                                 name=new Sprite();
  67                                                 var c:DisplayObject=map.getChildAt(map.NAMESPRITE);
  68                                                 Sprite(c).addChild(name);
  69                                         }
  70                                         t.writeNameLabel(name,tags[t.text],map.lon2coord(node.lon),map.latp2coord(node.latp));
  71                                 }
  72                         }
  73                         if (!r && iconname!='') {
  74                                 // not rendered any more, so remove
  75                                 l=map.getChildAt(map.POISPRITE);
  76                                 Sprite(l).removeChild(icon);
  77                                 iconname='';
  78                         }
  79                         return true;
  80                 }
  81
  82                 private function loadedIcon(event:Event):void {
  83                         icon = new Sprite();
  84                         icon.addChild(Bitmap(event.target.content));
  85                         var l:DisplayObject=map.getChildAt(map.POISPRITE);
  86                         Sprite(l).addChild(icon);
  87                         updatePosition();
  88
  89             icon.addEventListener(MouseEvent.CLICK, mouseEvent);
  90             icon.buttonMode = true;
  91             icon.mouseEnabled = true;
  92
  93                         loaded=true;
  94                 }
  95
  96         private function mouseEvent(event:MouseEvent):void {
  97                         map.entityMouseEvent(event, node);
  98         }
  99
 100                 private function updatePosition():void {
 101                         icon.x=map.lon2coord(node.lon)-icon.width/2;
 102                         icon.y=map.latp2coord(node.latp)-icon.height/2;
 103                 }
 104
 105         }
 106 }