net/systemeD/halcyon/NodeUI.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 flash.geom.Matrix;
  10         import flash.geom.Point;
  11         import net.systemeD.halcyon.styleparser.*;
  12     import net.systemeD.halcyon.connection.*;
  13         import net.systemeD.halcyon.Globals;
  14
  15         public class NodeUI extends EntityUI {
  16
  17                 public var loaded:Boolean=false;
  18                 private var iconnames:Object={};                        // name of icon on each sublayer
  19                 private var heading:Number=0;                           // heading within way
  20                 private var rotation:Number=0;                          // rotation applied to this POI
  21                 private static const NO_LAYER:int=-99999;
  22
  23                 public function NodeUI(node:Node, paint:MapPaint, heading:Number=0, layer:int=NO_LAYER, sl:StyleList=null) {
  24                         super(node,paint);
  25                         if (layer==NO_LAYER) { this.layer=paint.maxlayer; } else { this.layer=layer; }
  26                         this.heading = heading;
  27             entity.addEventListener(Connection.TAG_CHANGED, tagChanged);
  28                         entity.addEventListener(Connection.NODE_MOVED, nodeMoved);
  29                         entity.addEventListener(Connection.NODE_DELETED, nodeDeleted);
  30             attachRelationListeners();
  31                         redraw(sl);
  32                 }
  33
  34                 public function nodeMoved(event:Event):void {
  35                     updatePosition();
  36                 }
  37
  38                 public function nodeDeleted(event:Event):void {
  39                         removeSprites();
  40                 }
  41
  42                 override public function doRedraw(sl:StyleList):Boolean {
  43                         if (!paint.ready) { return false; }
  44                         if (entity.deleted) { return false; }
  45
  46                         var tags:Object = entity.getTagsCopy();
  47                         tags=applyStateClasses(tags);
  48                         if (!entity.hasParentWays) { tags[':poi']='yes'; }
  49                         if (!sl) { sl=paint.ruleset.getStyles(entity,tags,paint.map.scale); }
  50
  51                         var inWay:Boolean=entity.hasParentWays;
  52                         var hasStyles:Boolean=sl.hasStyles();
  53
  54                         removeSprites(); iconnames={};
  55                         return renderFromStyle(sl,tags);
  56                 }
  57
  58                 private function renderFromStyle(sl:StyleList,tags:Object):Boolean {
  59                         var r:Boolean=false;                    // ** rendered
  60                         var maxwidth:Number=4;                  // biggest width
  61                         var w:Number;
  62                         var icon:Sprite;
  63                         interactive=false;
  64                         for each (var sublayer:Number in sl.sublayers) {
  65
  66                                 if (sl.pointStyles[sublayer]) {
  67                                         var s:PointStyle=sl.pointStyles[sublayer];
  68                                         interactive||=s.interactive;
  69                                         r=true;
  70                                         if (s.rotation) { rotation=s.rotation; }
  71                                         if (s.icon_image!=iconnames[sublayer]) {
  72                                                 if (s.icon_image=='square') {
  73                                                         // draw square
  74                                                         icon=new Sprite();
  75                                                         addToLayer(icon,STROKESPRITE,sublayer);
  76                                                         w=styleIcon(icon,sl,sublayer);
  77                                                         icon.graphics.drawRect(0,0,w,w);
  78                                                         if (s.interactive) { maxwidth=Math.max(w,maxwidth); }
  79                                                         iconnames[sublayer]='_square';
  80
  81                                                 } else if (s.icon_image=='circle') {
  82                                                         // draw circle
  83                                                         icon=new Sprite();
  84                                                         addToLayer(icon,STROKESPRITE,sublayer);
  85                                                         w=styleIcon(icon,sl,sublayer);
  86                                                         icon.graphics.drawCircle(w,w,w);
  87                                                         if (s.interactive) { maxwidth=Math.max(w,maxwidth); }
  88                                                         iconnames[sublayer]='_circle';
  89
  90                                                 } else if (paint.ruleset.images[s.icon_image]) {
  91                                                         // 'load' icon (actually just from library)
  92                                                         var loader:ExtendedLoader = new ExtendedLoader();
  93                                                         loader.info['sublayer']=sublayer;
  94                                                         loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadedIcon);
  95                                                         loader.loadBytes(paint.ruleset.images[s.icon_image]);
  96                                                         iconnames[sublayer]=s.icon_image;
  97                                                 }
  98                                         }
  99                                 }
 100
 101                                 // name sprite
 102                                 var a:String='', t:TextStyle;
 103                                 if (sl.textStyles[sublayer]) {
 104                                         t=sl.textStyles[sublayer];
 105                                         interactive||=t.interactive;
 106                                         a=tags[t.text];
 107                                 }
 108
 109                                 if (a) {
 110                                         var name:Sprite=new Sprite();
 111                                         addToLayer(name,NAMESPRITE);
 112                                         t.writeNameLabel(name,a,0,0);
 113                                 }
 114                         }
 115                         if (!r) { return false; }
 116                         if (interactive) { addHitSprite(maxwidth); }
 117                         updatePosition();
 118                         return true;
 119                 }
 120
 121
 122                 private function styleIcon(icon:Sprite, sl:StyleList, sublayer:Number):Number {
 123                         loaded=true;
 124
 125                         // get colours
 126                         if (sl.shapeStyles[sublayer]) {
 127                                 var s:ShapeStyle=sl.shapeStyles[sublayer];
 128                                 if (s.color) { icon.graphics.beginFill(s.color);
 129                                         }
 130                                 if (s.casing_width || !isNaN(s.casing_color)) {
 131                                         icon.graphics.lineStyle(s.casing_width ? s.casing_width : 1,
 132                                                                                         s.casing_color ? s.casing_color : 0,
 133                                                                                         s.casing_opacity ? s.casing_opacity : 1);
 134                                 }
 135                         }
 136
 137                         // return width
 138                         return sl.pointStyles[sublayer].icon_width;
 139                 }
 140
 141                 private function addHitSprite(w:uint):void {
 142             var hitzone:Sprite = new Sprite();
 143             hitzone.graphics.lineStyle(4, 0x000000, 1, false, "normal", CapsStyle.ROUND, JointStyle.ROUND);
 144                         hitzone.graphics.beginFill(0);
 145                         hitzone.graphics.drawRect(0,0,w,w);
 146             addToLayer(hitzone, NODECLICKSPRITE);
 147             hitzone.visible = false;
 148                         setListenSprite(NODECLICKSPRITE, hitzone);
 149                 }
 150
 151                 private function loadedIcon(event:Event):void {
 152                         var icon:Sprite=new Sprite();
 153                         var sublayer:Number=event.target.loader.info['sublayer'];
 154                         addToLayer(icon,STROKESPRITE,sublayer);
 155                         icon.addChild(Bitmap(event.target.content));
 156                         addHitSprite(icon.width);
 157                         loaded=true;
 158                         updatePosition();
 159                 }
 160
 161                 private function updatePosition():void {
 162                         if (!loaded) { return; }
 163
 164                         for (var i:uint=0; i<sprites.length; i++) {
 165                                 var d:DisplayObject=sprites[i];
 166                                 d.x=0; d.y=0; d.rotation=0;
 167
 168                                 var m:Matrix=new Matrix();
 169                                 m.translate(-d.width/2,-d.height/2);
 170                                 m.rotate(rotation);
 171                                 m.translate(paint.map.lon2coord(Node(entity).lon),paint.map.latp2coord(Node(entity).latp));
 172                                 d.transform.matrix=m;
 173                         }
 174                 }
 175         }
 176 }