Fix #1783: repeated error message on console

[simgear.git] / simgear / canvas / CanvasEventManager.hxx

diff --git a/simgear/canvas/CanvasEventManager.hxx b/simgear/canvas/CanvasEventManager.hxx
index f8e80571f405264ff2be2c6a653fb55eb30bac0f..5e3738c8a6a7287f159ced968e7a58fd20e07ffc 100644 (file)
--- a/simgear/canvas/CanvasEventManager.hxx
+++ b/simgear/canvas/CanvasEventManager.hxx
@@ -29,11 +29,22 @@ namespace canvas
 
   struct EventTarget
   {
-    ElementWeakPtr  element;
-    osg::Vec2f      local_pos,
-                    local_delta;
+    ElementWeakPtr      element;
+
+    // Used as storage by EventManager during event propagation
+    mutable osg::Vec2f  local_pos;
+
+    EventTarget( Element* el,
+                 const osg::Vec2f pos = osg::Vec2f() ):
+      element(el),
+      local_pos(pos)
+    {}
   };
-  typedef std::deque<EventTarget> EventPropagationPath;
+
+  inline bool operator==(const EventTarget& t1, const EventTarget& t2)
+  {
+    return t1.element.lock() == t2.element.lock();
+  }
 
   class EventManager
   {
@@ -43,17 +54,17 @@ namespace canvas
       bool handleEvent( const MouseEventPtr& event,
                         const EventPropagationPath& path );
 
+      bool propagateEvent( const EventPtr& event,
+                           const EventPropagationPath& path );
+
     protected:
       struct StampedPropagationPath
       {
-        StampedPropagationPath():
-          time(0)
-        {}
+        StampedPropagationPath();
+        StampedPropagationPath(const EventPropagationPath& path, double time);
 
-        StampedPropagationPath(const EventPropagationPath& path, double time):
-          path(path),
-          time(time)
-        {}
+        void clear();
+        bool valid() const;
 
         EventPropagationPath path;
         double time;
@@ -61,26 +72,39 @@ namespace canvas
 
       // TODO if we really need the paths modify to not copy around the paths
       //      that much.
-      StampedPropagationPath _last_mouse_down,
-                             _last_click;
+      StampedPropagationPath _last_mouse_over;
       size_t _current_click_count;
 
+      struct MouseEventInfo:
+        public StampedPropagationPath
+      {
+        int button;
+        osg::Vec2f pos;
+
+        void set( const MouseEventPtr& event,
+                  const EventPropagationPath& path );
+      } _last_mouse_down,
+        _last_click;
+
       /**
        * Propagate click event and handle multi-click (eg. create dblclick)
        */
-      void handleClick( const MouseEventPtr& event,
+      bool handleClick( const MouseEventPtr& event,
                         const EventPropagationPath& path );
 
-      bool propagateEvent( const EventPtr& event,
-                           const EventPropagationPath& path );
+      /**
+       * Handle mouseover/enter/out/leave
+       */
+      bool handleMove( const MouseEventPtr& event,
+                       const EventPropagationPath& path );
 
       /**
        * Check if two click events (either mousedown/up or two consecutive
        * clicks) are inside a maximum distance to still create a click or
        * dblclick event respectively.
        */
-      bool checkClickDistance( const EventPropagationPath& path1,
-                               const EventPropagationPath& path2 ) const;
+      bool checkClickDistance( const osg::Vec2f& pos1,
+                               const osg::Vec2f& pos2 ) const;
       EventPropagationPath
       getCommonAncestor( const EventPropagationPath& path1,
                          const EventPropagationPath& path2 ) const;