net/systemeD/halcyon/MapPaint.as

   1 package net.systemeD.halcyon {
   2
   3         import flash.display.Sprite;
   4         import flash.display.DisplayObject;
   5         import net.systemeD.halcyon.NodeUI;
   6         import net.systemeD.halcyon.WayUI;
   7         import net.systemeD.halcyon.connection.*;
   8         import net.systemeD.halcyon.styleparser.RuleSet;
   9         import net.systemeD.halcyon.Globals;
  10
  11         public class MapPaint extends Sprite {
  12
  13                 public var map:Map;
  14                 public var minlayer:int;
  15                 public var maxlayer:int;
  16                 public var ruleset:RuleSet;                                             // rules
  17                 public var wayuis:Object=new Object();                  // sprites for ways and (POI/tagged) nodes
  18                 public var nodeuis:Object=new Object();                 //      |
  19         public var markeruis:Object=new Object();
  20                 public var isBackground:Boolean = true;                 // is it a background layer or the core paint object?
  21                 public var sublayerIndex:Object={};                             // hash of index->position
  22
  23                 private const VERYBIG:Number=Math.pow(2,16);
  24                 private static const NO_LAYER:int=-99999;               // same as NodeUI
  25
  26                 // Set up layering
  27
  28                 public function MapPaint(map:Map,minlayer:int,maxlayer:int) {
  29                         mouseEnabled=false;
  30
  31                         this.map=map;
  32                         this.minlayer=minlayer;
  33                         this.maxlayer=maxlayer;
  34                         sublayerIndex[1]=0;
  35                         var s:Sprite, l:int;
  36
  37                         // Add paint sprites
  38                         for (l=minlayer; l<=maxlayer; l++) {                    // each layer (10 is +5, 0 is -5)
  39                                 s = getPaintSprite();                                           //      |
  40                                 s.addChild(getPaintSprite());                           //      | 0 fill
  41                                 s.addChild(getPaintSprite());                           //      | 1 casing
  42                                 var t:Sprite = getPaintSprite();                        //      | 2 stroke
  43                                 t.addChild(getPaintSprite());                           //      |  | sublayer
  44                                 s.addChild(t);                                                          //      |  |
  45                                 s.addChild(getPaintSprite());                           //      | 3 names
  46                                 addChild(s);                                                            //      |
  47                         }
  48
  49                         // Add hit sprites
  50                         for (l=minlayer; l<=maxlayer; l++) {                    // each layer (21 is +5, 11 is -5)
  51                                 s = getHitSprite();                                                     //      |
  52                                 s.addChild(getHitSprite());                                     //      | 0 way hit tests
  53                                 s.addChild(getHitSprite());                                     //      | 1 node hit tests
  54                                 addChild(s);
  55                         }
  56                 }
  57
  58                 public function getPaintSpriteAt(l:int):Sprite {
  59                         return getChildAt(l-minlayer) as Sprite;
  60                 }
  61
  62                 public function getHitSpriteAt(l:int):Sprite {
  63                         return getChildAt((l-minlayer) + (maxlayer-minlayer+1)) as Sprite;
  64                 }
  65
  66                 public function get ready():Boolean {
  67                         if (!ruleset) { return false; }
  68                         if (!ruleset.loaded) { return false; }
  69                         return true;
  70                 }
  71
  72                 public function sublayer(layer:int,sublayer:Number):Sprite {
  73                         var l:DisplayObject;
  74                         var o:DisplayObject;
  75                         var index:String, ix:Number;
  76                         if (!sublayerIndex.hasOwnProperty(sublayer)) {
  77                                 // work out which position to add at
  78                                 var lowestAbove:Number=VERYBIG;
  79                                 var lowestAbovePos:int=-1;
  80                                 var indexLength:uint=0;
  81                                 for (index in sublayerIndex) {
  82                                         ix=Number(index);
  83                                         if (ix>sublayer && ix<lowestAbove) {
  84                                                 lowestAbove=ix;
  85                                                 lowestAbovePos=sublayerIndex[index];
  86                                         }
  87                                         indexLength++;
  88                                 }
  89                                 if (lowestAbovePos==-1) { lowestAbovePos=indexLength; }
  90
  91                                 // add sprites
  92                                 for (var i:int=minlayer; i<=maxlayer; i++) {
  93                                         l=getChildAt(i-minlayer);
  94                                         o=(l as Sprite).getChildAt(2);
  95                                         (o as Sprite).addChildAt(getPaintSprite(),lowestAbovePos);
  96                                 }
  97
  98                                 // update index
  99                                 // (we do it in this rather indirect way because if you alter sublayerIndex directly
 100                                 //      within the loop, it confuses the iterator)
 101                                 var toUpdate:Array=[];
 102                                 for (index in sublayerIndex) {
 103                                         ix=Number(index);
 104                                         if (ix>sublayer) { toUpdate.push(index); }
 105                                 }
 106                                 for each (index in toUpdate) { sublayerIndex[index]++; }
 107                                 sublayerIndex[sublayer]=lowestAbovePos;
 108                         }
 109
 110                         l=getChildAt(layer-minlayer);
 111                         o=(l as Sprite).getChildAt(2);
 112                         return ((o as Sprite).getChildAt(sublayerIndex[sublayer]) as Sprite);
 113                 }
 114
 115         /**
 116         * Update, and if necessary, create / remove UIs for the given objects.
 117         * The object is effectively lists of objects split into inside/outside pairs, e.g.
 118         * { waysInside: [], waysOutside: [] } where each is a array of entities either inside
 119         * or outside this current view window. UIs for the entities on "inside" lists will be created if necessary.
 120         * Flags control redrawing existing entities and removing UIs from entities no longer in view.
 121         *
 122         * @param o The object containing all the relevant entites.
 123         * @param redraw If true, all UIs for entities on "inside" lists will be redrawn
 124         * @param remove If true, all UIs for entites on "outside" lists will be removed. The purgable flag on UIs
 125                         can override this, for example for selected objects.
 126         */
 127                 public function updateEntityUIs(o:Object, redraw:Boolean, remove:Boolean):void {
 128                         var way:Way, poi:Node, marker:Marker;
 129
 130                         for each (way in o.waysInside) {
 131                                 if (!wayuis[way.id]) { createWayUI(way); }
 132                                 else if (redraw) { wayuis[way.id].recalculate(); wayuis[way.id].redraw(); }
 133                         }
 134
 135                         if (remove) {
 136                                 for each (way in o.waysOutside) {
 137                                         if (wayuis[way.id] && !wayuis[way.id].purgable) {
 138                                                 if (redraw) { wayuis[way.id].recalculate(); wayuis[way.id].redraw(); }
 139                                         } else {
 140                                                 deleteWayUI(way);
 141                                         }
 142                                 }
 143                         }
 144
 145                         for each (poi in o.poisInside) {
 146                                 if (!nodeuis[poi.id]) { createNodeUI(poi); }
 147                                 else if (redraw) { nodeuis[poi.id].redraw(); }
 148                         }
 149
 150                         if (remove) {
 151                                 for each (poi in o.poisOutside) {
 152                                         if (nodeuis[poi.id] && !nodeuis[poi.id].purgable) {
 153                                                 if (redraw) { nodeuis[poi.id].redraw(); }
 154                                         } else {
 155                                                 deleteNodeUI(poi);
 156                                         }
 157                                 }
 158                         }
 159
 160             for each (marker in o.markersInside) {
 161                 if (!markeruis[marker.id]) { createMarkerUI(marker); }
 162                 else if (redraw) { markeruis[marker.id].redraw(); }
 163             }
 164
 165             if (remove) {
 166                 for each (marker in o.markersOutside) {
 167                     if (markeruis[marker.id] && !markeruis[marker.id].purgable) {
 168                         if (redraw) { markeruis[marker.id].redraw(); }
 169                     } else {
 170                         deleteMarkerUI(marker);
 171                     }
 172                 }
 173             }
 174                 }
 175
 176                 public function createWayUI(way:Way):WayUI {
 177                         if (!wayuis[way.id]) {
 178                                 wayuis[way.id]=new WayUI(way,this);
 179                                 way.addEventListener(Connection.WAY_DELETED, wayDeleted);
 180                         }
 181                         return wayuis[way.id];
 182                 }
 183
 184                 public function wayDeleted(event:EntityEvent):void {
 185                         deleteWayUI(event.entity as Way);
 186                 }
 187
 188                 public function deleteWayUI(way:Way):void {
 189                         way.removeEventListener(Connection.WAY_DELETED, wayDeleted);
 190                         if (wayuis[way.id]) {
 191                                 wayuis[way.id].redrawMultis();
 192                                 wayuis[way.id].removeSprites();
 193                                 wayuis[way.id].removeEventListeners();
 194                                 delete wayuis[way.id];
 195                         }
 196                         for (var i:uint=0; i<way.length; i++) {
 197                                 var node:Node=way.getNode(i);
 198                                 if (nodeuis[node.id]) { deleteNodeUI(node); }
 199                         }
 200                 }
 201
 202                 public function createNodeUI(node:Node,rotation:Number=0,layer:int=NO_LAYER,stateClasses:Object=null):NodeUI {
 203                         if (!nodeuis[node.id]) {
 204                                 nodeuis[node.id]=new NodeUI(node,this,rotation,layer,stateClasses);
 205                                 node.addEventListener(Connection.NODE_DELETED, nodeDeleted);
 206                         } else {
 207                                 for (var state:String in stateClasses) {
 208                                         nodeuis[node.id].setStateClass(state,stateClasses[state]);
 209                                 }
 210                                 nodeuis[node.id].redraw();
 211                         }
 212                         return nodeuis[node.id];
 213                 }
 214
 215                 public function nodeDeleted(event:EntityEvent):void {
 216                         deleteNodeUI(event.entity as Node);
 217                 }
 218
 219                 public function deleteNodeUI(node:Node):void {
 220                         if (!nodeuis[node.id]) { return; }
 221                         node.removeEventListener(Connection.NODE_DELETED, nodeDeleted);
 222                         nodeuis[node.id].removeSprites();
 223                         nodeuis[node.id].removeEventListeners();
 224                         delete nodeuis[node.id];
 225                 }
 226
 227         public function createMarkerUI(marker:Marker,rotation:Number=0,layer:int=NO_LAYER,stateClasses:Object=null):MarkerUI {
 228             if (!markeruis[marker.id]) {
 229                 markeruis[marker.id]=new MarkerUI(marker,this,rotation,layer,stateClasses);
 230                 marker.addEventListener(Connection.NODE_DELETED, markerDeleted);
 231             } else {
 232                 for (var state:String in stateClasses) {
 233                     markeruis[marker.id].setStateClass(state,stateClasses[state]);
 234                 }
 235                 markeruis[marker.id].redraw();
 236             }
 237             return markeruis[marker.id];
 238         }
 239
 240         public function markerDeleted(event:EntityEvent):void {
 241             deleteMarkerUI(event.entity as Marker);
 242         }
 243
 244         public function deleteMarkerUI(marker:Marker):void {
 245             if (!markeruis[marker.id]) { return; }
 246             marker.removeEventListener(Connection.NODE_DELETED, markerDeleted);
 247             markeruis[marker.id].removeSprites();
 248             markeruis[marker.id].removeEventListeners();
 249             delete markeruis[marker.id];
 250         }
 251
 252                 public function renumberWayUI(way:Way,oldID:Number):void {
 253                         if (!wayuis[oldID]) { return; }
 254                         wayuis[way.id]=wayuis[oldID];
 255                         delete wayuis[oldID];
 256                 }
 257
 258                 public function renumberNodeUI(node:Node,oldID:Number):void {
 259                         if (!nodeuis[oldID]) { return; }
 260                         nodeuis[node.id]=nodeuis[oldID];
 261                         delete nodeuis[oldID];
 262                 }
 263
 264                 private function getPaintSprite():Sprite {
 265                         var s:Sprite = new Sprite();
 266                         s.mouseEnabled = false;
 267                         s.mouseChildren = false;
 268                         return s;
 269                 }
 270
 271                 private function getHitSprite():Sprite {
 272                         var s:Sprite = new Sprite();
 273                         return s;
 274                 }
 275
 276                 public function redraw():void {
 277                         for each (var w:WayUI in wayuis) { w.recalculate(); w.invalidateStyleList(); w.redraw(); }
 278                         /* sometimes (e.g. in Map.setStyle) Mappaint.redrawPOIs() is called immediately afterwards anyway. FIXME? */
 279                         for each (var p:NodeUI in nodeuis) { p.invalidateStyleList(); p.redraw(); }
 280                 }
 281
 282                 public function redrawPOIs():void {
 283                         for each (var p:NodeUI in nodeuis) { p.invalidateStyleList(); p.redraw(); }
 284                 }
 285
 286                 public function findSource():VectorLayer {
 287                         var v:VectorLayer;
 288                         for each (v in map.vectorlayers) {
 289                                 if (v.paint==this) { return v; }
 290                         }
 291                         return null;
 292                 }
 293         }
 294 }