slideshow/source/inc/pauseeventhandler.hxx

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