slideshow/source/inc/pauseeventhandler.hxx

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  19
  20 #ifndef INCLUDED_SLIDESHOW_SOURCE_INC_PAUSEEVENTHANDLER_HXX
  21 #define INCLUDED_SLIDESHOW_SOURCE_INC_PAUSEEVENTHANDLER_HXX
  22
  23 #include <boost/shared_ptr.hpp>
  24
  25
  26 /* Definition of PauseHandler interface */
  27
  28 namespace slideshow
  29 {
  30     namespace internal
  31     {
  32
  33         /** Interface for handling pause events.
  34
  35             Classes implementing this interface can be added to an
  36             EventMultiplexer object, and are called from there to
  37             handle pause events.
  38          */
  39         class PauseEventHandler
  40         {
  41         public:
  42             /** Handle the event.
  43
  44                 @param bPauseShow
  45                 When true, the show is paused. When false, the show is
  46                 started again
  47
  48                 @return true, if this handler has successfully
  49                 processed the pause event. When this method returns
  50                 false, possibly other, less prioritized handlers are
  51                 called, too.
  52              */
  53             virtual bool handlePause( bool bPauseShow ) = 0;
  54
  55         protected:
  56             ~PauseEventHandler() {}
  57         };
  58
  59         typedef ::boost::shared_ptr< PauseEventHandler > PauseEventHandlerSharedPtr;
  60     }
  61 }
  62
  63 #endif // INCLUDED_SLIDESHOW_SOURCE_INC_PAUSEEVENTHANDLER_HXX
  64
  65 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */