Canvas: Respect clipping while event handling.

[simgear.git] / simgear / canvas / elements / CanvasElement.hxx

diff --git a/simgear/canvas/elements/CanvasElement.hxx b/simgear/canvas/elements/CanvasElement.hxx
index 93108255483152a9d28d1bb025610a352834fd5d..dc5e1bf7592985d125b588bc26470c5d4e770ead 100644 (file)
--- a/simgear/canvas/elements/CanvasElement.hxx
+++ b/simgear/canvas/elements/CanvasElement.hxx
@@ -113,18 +113,34 @@ namespace canvas
 
       virtual bool handleEvent(canvas::EventPtr event);
 
-      virtual bool hitBound( const osg::Vec2f& pos,
+      /**
+       *
+       * @param global_pos Position in global (canvas) coordinate frame
+       * @param parent_pos Position in parent coordinate frame
+       * @param local_pos  Position in local (element) coordinate frame
+       */
+      virtual bool hitBound( const osg::Vec2f& global_pos,
+                             const osg::Vec2f& parent_pos,
                              const osg::Vec2f& local_pos ) const;
 
       /**
-       * Get whether the element is visible or hidden (Can be changed with
-       * setting property "visible" accordingly).
+       * Set visibility of the element.
+       */
+      void setVisible(bool visible);
+
+      /**
+       * Get whether the element is visible or hidden.
        */
       bool isVisible() const;
 
       osg::MatrixTransform* getMatrixTransform();
       osg::MatrixTransform const* getMatrixTransform() const;
 
+      /**
+       * Transform position to local coordinages.
+       */
+      osg::Vec2f posToLocal(const osg::Vec2f& pos) const;
+
       virtual void childAdded( SGPropertyNode * parent,
                                SGPropertyNode * child );
       virtual void childRemoved( SGPropertyNode * parent,
@@ -157,6 +173,11 @@ namespace canvas
        */
       virtual osg::BoundingBox getTransformedBounds(const osg::Matrix& m) const;
 
+      /**
+       * Get the transformation matrix (product of all transforms)
+       */
+      osg::Matrix getMatrix() const;
+
       /**
        * Create an canvas Element
        *
@@ -181,7 +202,8 @@ namespace canvas
 
       enum Attributes
       {
-        BLEND_FUNC      = 1,
+        TRANSFORM       = 1,
+        BLEND_FUNC      = TRANSFORM << 1,
         SCISSOR_COORDS  = BLEND_FUNC << 1,
         LAST_ATTRIBUTE  = SCISSOR_COORDS << 1
       };
@@ -200,9 +222,8 @@ namespace canvas
       CanvasWeakPtr _canvas;
       Element      *_parent;
 
-      uint32_t _attributes_dirty;
+      mutable uint32_t _attributes_dirty;
 
-      bool _transform_dirty;
       osg::observer_ptr<osg::MatrixTransform> _transform;
       std::vector<TransformType>              _transform_types;