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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_SLIDESHOW_ANIMATABLESHAPE_HXX
      21             : #define INCLUDED_SLIDESHOW_ANIMATABLESHAPE_HXX
      22             : 
      23             : #include <boost/shared_ptr.hpp>
      24             : 
      25             : #include "shape.hxx"
      26             : 
      27             : 
      28             : namespace slideshow
      29             : {
      30             :     namespace internal
      31             :     {
      32             :         /** Represents an animatable shape.
      33             : 
      34             :             This interface adds animation handling methods to a
      35             :             shape. It allows transparent switching between
      36             :             sprite-based viewing and static painting, depending on
      37             :             whether animations are currently running.
      38             :          */
      39           0 :         class AnimatableShape : public Shape
      40             :         {
      41             :         public:
      42             :             // Animation methods
      43             : 
      44             : 
      45             :             /** Notify the Shape that an animation starts now
      46             : 
      47             :                 This method enters animation mode on all registered
      48             :                 views.
      49             : 
      50             :                 @attention This method is supposed to be called only
      51             :                 from the LayerManager, since it might involve shifting
      52             :                 shapes between different layers (and removing this
      53             :                 shape from the background layer in the first place)
      54             :              */
      55             :             virtual void enterAnimationMode() = 0;
      56             : 
      57             :             /** Notify the Shape that it is no longer animated
      58             : 
      59             :                 This methods requests the Shape to end animation mode
      60             :                 on all registered views, if called more or equal the
      61             :                 times enterAnimationMode() was called. That is, the
      62             :                 Shape only leaves animation mode, if all requested
      63             :                 enterAnimationMode() call sites have issued their
      64             :                 matching leaveAnimationMode().
      65             : 
      66             :                 @attention This method is supposed to be called only
      67             :                 from the LayerManager, since it might involve shifting
      68             :                 shapes between different layers (and adding this
      69             :                 shape to the background layer again)
      70             :              */
      71             :             virtual void leaveAnimationMode() = 0;
      72             : 
      73             :         };
      74             : 
      75             :         typedef ::boost::shared_ptr< AnimatableShape > AnimatableShapeSharedPtr;
      76             : 
      77             :     }
      78             : }
      79             : 
      80             : #endif /* INCLUDED_SLIDESHOW_ANIMATABLESHAPE_HXX */
      81             : 
      82             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */