From e8379443f05dbb4acc2ffb695ce9ea999cf0949e Mon Sep 17 00:00:00 2001
From: Richard Fairhurst <richard@systemed.net>
Date: Mon, 1 Nov 2010 13:40:22 +0000
Subject: [PATCH] +/- tooltips with current zoom level

---
 net/systemeD/halcyon/Map.as      |  6 +++++-
 net/systemeD/halcyon/MapEvent.as |  1 +
 potlatch2.mxml                   | 13 +++++++++++--
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/net/systemeD/halcyon/Map.as b/net/systemeD/halcyon/Map.as
index ab36a734..6e83556f 100755
--- a/net/systemeD/halcyon/Map.as
+++ b/net/systemeD/halcyon/Map.as
@@ -133,7 +133,10 @@ package net.systemeD.halcyon {
 				paint.ruleset=new RuleSet(MINSCALE,MAXSCALE,redraw,redrawPOIs);
 				paint.ruleset.loadFromCSS(styleurl);
 			}
-			if (startscale>0) { scale=startscale; }
+			if (startscale>0) {
+				scale=startscale;
+				this.dispatchEvent(new MapEvent(MapEvent.SCALE, {scale:scale}));
+			}
 
 			scalefactor=MASTERSCALE/Math.pow(2,13-scale);
 			baselon    =startlon          -(mapwidth /2)/scalefactor;
@@ -332,6 +335,7 @@ package net.systemeD.halcyon {
 		private function changeScale(newscale:uint):void {
 			addDebug("new scale "+newscale);
 			scale=newscale;
+			this.dispatchEvent(new MapEvent(MapEvent.SCALE, {scale:scale}));
 			scalefactor=MASTERSCALE/Math.pow(2,13-scale);
 			updateCoordsFromLatLon((edge_t+edge_b)/2,(edge_l+edge_r)/2);	// recentre
 			tileset.changeScale(scale);
diff --git a/net/systemeD/halcyon/MapEvent.as b/net/systemeD/halcyon/MapEvent.as
index b0f090fb..cb125f53 100644
--- a/net/systemeD/halcyon/MapEvent.as
+++ b/net/systemeD/halcyon/MapEvent.as
@@ -7,6 +7,7 @@ package net.systemeD.halcyon {
 		public static const DOWNLOAD:String = "download";
 		public static const RESIZE:String = "resize";
 		public static const MOVE:String = "move";
+		public static const SCALE:String = "scale";
 		public static const NUDGE_BACKGROUND:String = "nudge_background";
 		public static const ERROR:String = "error";
 
diff --git a/potlatch2.mxml b/potlatch2.mxml
index ff05912b..79735e54 100755
--- a/potlatch2.mxml
+++ b/potlatch2.mxml
@@ -59,9 +59,9 @@
             top="0" left="0" width="100%" height="100%" dragEnter="dragEnterHandler(event);" dragDrop="dragDropHandler(event);">
         </mx:Canvas>
         <mx:Image source="@Embed('embedded/zoomIn.svg')" right="3" top="3" click="theMap.zoomIn();"
-            rollOverEffect="glowImage" rollOutEffect="unglowImage"/>
+            rollOverEffect="glowImage" rollOutEffect="unglowImage" toolTip="{'Zoom in - currently z'+getScale()}" />
         <mx:Image source="@Embed('embedded/zoomOut.svg')" right="3" top="20" click="theMap.zoomOut();"
-            rollOverEffect="glowImage" rollOutEffect="unglowImage"/>
+            rollOverEffect="glowImage" rollOutEffect="unglowImage" toolTip="{'Zoom out - currently z'+getScale()}" />
         <mx:TextArea id="dataWorking" text="" right="20" top="3" disabledColor="black" backgroundDisabledColor="0xFFFFEA" height="18"
             enabled="false" borderThickness="0"
             showEffect="{wipeIn}" hideEffect="{wipeOut}"/>
@@ -155,6 +155,7 @@
 			_root.addChild(yahoo);
 			_root.addChild(theMap);
             theMap.updateSize(w,h);
+			theMap.addEventListener(MapEvent.SCALE, scaleHandler);
 
 			// add mask for map
 			var s:Sprite=new Sprite();
@@ -366,6 +367,14 @@
 			obj.flush();
 		}
 
+		private function scaleHandler(event:MapEvent):void {
+			dispatchEvent(new Event("rescale"));
+		}
+		
+		[Bindable(event="rescale")]
+		private function getScale():String {
+			return String(theMap.scale);
+		}
 
         private function dragEnterHandler(event:DragEvent):void {
             // Get the drop target component from the event object.
-- 
2.36.1