Added a method: getSize()

and a new event: SizeChangedEvent.

So that games can query and listen for changes to the size of their
display area.


git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@470 c613c5cb-e716-0410-b11b-feb51c14d237

src/as/com/threerings/ezgame/EZGameControl.as

@@ -21,6 +21,8 @@
 
 package com.threerings.ezgame {
 
+import flash.display.DisplayObject;
+
 import flash.errors.IllegalOperationError;
 
 import flash.events.Event;
@@ -28,7 +30,7 @@ import flash.events.EventDispatcher;
 import flash.events.KeyboardEvent;
 import flash.events.MouseEvent;
 
-import flash.display.DisplayObject;
+import flash.geom.Point;
 
 /**
  * Dispatched when a key is pressed when the game has focus.
@@ -44,6 +46,13 @@ import flash.display.DisplayObject;
  */
 [Event(name="keyUp", type="flash.events.KeyboardEvent")]
 
+/**
+ * Dispatched when the size of the game area changes.
+ *
+ * @eventType com.threerings.ezgame.SizeChangedEvent.TYPE
+ */
+[Event(name="SizeChanged", type="com.threerings.ezgame.SizeChangedEvent")]
+
 /**
  * Dispatched when the controller changes for the game.
  *
@@ -189,6 +198,15 @@ public class EZGameControl extends BaseControl
         return _gameConfig;
     }
 
+    /**
+     * Get the size of the game area, expressed as a Point
+     * (x = width, y = height).
+     */
+    public function getSize () :Point
+    {
+        return callEZCode("getSize_v1") as Point;
+    }
+
     /**
      * Get the CollectionsControl, which contains methods for utilizing the server to dispatch
      * private information.
@@ -623,6 +641,7 @@ public class EZGameControl extends BaseControl
         o["dispatchEvent_v1"] = dispatch;
         o["occupantChanged_v1"] = occupantChanged_v1;
         o["userChat_v1"] = userChat_v1;
+        o["sizeChanged_v1"] = sizeChanged_v1;
     }
 
     /**
@@ -702,6 +721,14 @@ public class EZGameControl extends BaseControl
         dispatch(new UserChatEvent(this, speaker, message));
     }
 
+    /**
+     * Private method to generate a SizeChangedEvent.
+     */
+    private function sizeChanged_v1 (size :Point) :void
+    {
+        dispatch(new SizeChangedEvent(this, size));
+    }
+
     /**
      * Sets the properties we received from the EZ game framework on the other side of the security
      * boundary.

src/as/com/threerings/ezgame/SizeChangedEvent.as

@@ -0,0 +1,68 @@
+//
+// $Id$
+//
+// Vilya library - tools for developing networked games
+// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/vilya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.ezgame {
+
+import flash.events.Event;
+
+import flash.geom.Point;
+
+/**
+ * Dispatched when the size of the game area changes, for example as a result of the user
+ * resizing their browser window.
+ */
+public class SizeChangedEvent extends EZEvent
+{
+    /** The type of this event. */
+    public static const TYPE :String = "SizeChanged";
+
+    /**
+     * Get the size of the game area, expressed as a Point
+     * (The width is the x value, the height is the y value).
+     */
+    public function get size () :Point
+    {
+        return _size;
+    }
+
+    /**
+     * Constructor.
+     */
+    public function SizeChangedEvent (ezgame :EZGameControl, size :Point)
+    {
+        super(TYPE, ezgame);
+        _size = size;
+    }
+
+    override public function toString () :String
+    {
+        return "[SizeChangedEvent size=" + _size + "]";
+    }
+
+    override public function clone () :Event
+    {
+        return new SizeChangedEvent(_ezgame, _size.clone());
+    }
+
+    /** Our implementation details. */
+    protected var _size: Point;
+}
+}

src/as/com/threerings/ezgame/client/EZGamePanel.as

@@ -80,6 +80,16 @@ public class EZGamePanel extends Canvas
         backend.shutdown();
     }
 
+    override protected function updateDisplayList (uw :Number, uh :Number) :void
+    {
+        super.updateDisplayList(uw, uh);
+
+// TODO: debugging. Remove.
+        trace("UpdateDisplayList: " + uw + ":" + _gameView.width + ", " +
+            uh + ":" + _gameView.height);
+        backend.sizeChanged();
+    }
+
     /**
      * Creates the backend object that will handle requests from user code.
      */
@@ -93,7 +103,7 @@ public class EZGamePanel extends Canvas
         view.percentWidth = 100;
         view.percentHeight = 100;
     }
-    
+
     protected var _ctx :CrowdContext;
     protected var _ctrl :EZGameController;
     protected var _gameView :GameContainer;

src/as/com/threerings/ezgame/client/GameControlBackend.as

@@ -21,17 +21,18 @@
 
 package com.threerings.ezgame.client {
 
+import flash.display.DisplayObject;
+import flash.display.InteractiveObject;
+
 import flash.errors.IllegalOperationError;
 
 import flash.events.Event;
 import flash.events.EventDispatcher;
 import flash.events.IEventDispatcher;
 import flash.events.KeyboardEvent;
-
 import flash.events.MouseEvent;
 
-import flash.display.DisplayObject;
-import flash.display.InteractiveObject;
+import flash.geom.Point;
 
 import flash.utils.ByteArray;
 import flash.utils.Dictionary;
@@ -189,6 +190,14 @@ public class GameControlBackend
         callUserCode("roundStateChanged_v1", started);
     }
 
+    /**
+     * Called by the EZGamePanel when the size of the game area has changed.
+     */
+    public function sizeChanged () :void
+    {
+        callUserCode("sizeChanged_v1", getSize_v1());
+    }
+
     // from SetListener
     public function entryAdded (event :EntryAddedEvent) :void
     {
@@ -286,6 +295,7 @@ public class GameControlBackend
     // from ChatDisplay
     public function clear () :void
     {
+        // we do nothing
     }
 
     // from ChatDisplay
@@ -517,6 +527,8 @@ public class GameControlBackend
         o["startTransaction"] = startTransaction_v1;
         o["commitTransaction"] = commitTransaction_v1;
 
+        o["getSize_v1"] = getSize_v1;
+
         // compatability
         o["endTurn_v2"] = startNextTurn_v1; // it's the same!
     }
@@ -909,6 +921,14 @@ public class GameControlBackend
         _ctx.getClient().getInvocationDirector().commitTransaction();
     }
 
+    /**
+     * Get the size of the game area.
+     */
+    protected function getSize_v1 () :Point
+    {
+        return new Point(_container.width, _container.height);
+    }
+
     /**
      * Converts a Flash array of ints to a TypedArray for delivery over the wire to the server.
      */