Let's inform the derived classes of the delta rather than the new _vbounds

upper left which is something they're already much more likely to be
making use of directly.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2443 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/VirtualMediaPanel.java

@@ -1,5 +1,5 @@
 //
-// $Id: VirtualMediaPanel.java,v 1.15 2003/04/17 19:21:16 mdb Exp $
+// $Id: VirtualMediaPanel.java,v 1.16 2003/04/22 18:12:40 mdb Exp $
 
 package com.threerings.media;
 
@@ -226,14 +226,19 @@ public class VirtualMediaPanel extends MediaPanel
             _vbounds.x = _nx; _vbounds.y = _ny;
 
             // let derived classes react if they so desire
-            viewLocationDidChange(_vbounds.x, _vbounds.y);
+            viewLocationDidChange(_dx, _dy);
         }
     }
 
     /**
-     * Called during our tick when we have adjusted the view location.
+     * Called during our tick when we have adjusted the view location. The
+     * {@link _vbounds} will already have been updated to reflect our new
+     * view coordinates.
+     *
+     * @param dx the delta scrolled in the x direction (in pixels).
+     * @param dy the delta scrolled in the y direction (in pixels).
      */
-    protected void viewLocationDidChange (int nx, int ny)
+    protected void viewLocationDidChange (int dx, int dy)
     {
     }
 

src/java/com/threerings/miso/client/MisoScenePanel.java

@@ -1,5 +1,5 @@
 //
-// $Id: MisoScenePanel.java,v 1.11 2003/04/21 17:56:55 mdb Exp $
+// $Id: MisoScenePanel.java,v 1.12 2003/04/22 18:12:40 mdb Exp $
 
 package com.threerings.miso.client;
 
@@ -519,11 +519,13 @@ public class MisoScenePanel extends VirtualMediaPanel
     }
 
     // documentation inherited
-    protected void viewLocationDidChange (int nx, int ny)
+    protected void viewLocationDidChange (int dx, int dy)
     {
+        super.viewLocationDidChange(dx, dy);
+
         // compute the tile coordinates of our upper left screen
         // coordinate and request a rethink if they've changed
-        MisoUtil.screenToTile(_metrics, nx, ny, _tcoords);
+        MisoUtil.screenToTile(_metrics, _vbounds.x, _vbounds.y, _tcoords);
         if (!_tcoords.equals(_ulpos)) {
             _ulpos.setLocation(_tcoords);
             rethink();