--- a/tool.d	Sun Jul 12 13:23:06 2009 +0930
+++ b/tool.d	Mon Jul 13 16:16:17 2009 +0930
@@ -1,6 +1,9 @@
 module tool;
 
-import icanvas;
+public {
+    import icanvas;
+    import tk.events;
+}
 
 /*
 interface IToolStack {
@@ -10,7 +13,7 @@
 }
 */
 
-abstract class Tool : EventHandler {
+abstract class Tool {
     /*
     abstract bool is_sticky();
     abstract bool is_replaceable();
@@ -20,5 +23,19 @@
     abstract void start(IToolStack tool_stack);
     abstract void stop(IToolStack tool_stack);
     */
+
+    //void draw(const Viewport viewport, in Rectangle damage, Context model_cr, Context pixel_cr) const;
+
+    bool handle_button_press(Viewport viewport, in ButtonEvent event);
+    bool handle_button_release(Viewport viewport, in ButtonEvent event);
+    bool handle_motion(Viewport viewport, in MotionEvent event);
+    bool handle_scroll(Viewport viewport, in ScrollEvent event);
+    //bool handle_expose(Viewport viewport, ExposeEvent event);
+    //bool handle_enter(Viewport viewport, CrossingEvent event);
+    //bool handle_leave(Viewport viewport, CrossingEvent event);
+    //bool handle_focus_in(Viewport viewport, FocusEvent event);
+    //bool handle_focus_out(Viewport viewport, FocusEvent event);
+    bool handle_key_press(Viewport viewport, in KeyEvent event);
+    bool handle_key_release(Viewport viewport, in KeyEvent event);
 }