slideshow/source/inc/mouseeventhandler.hxx

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  19
  20 #ifndef INCLUDED_SLIDESHOW_SOURCE_INC_MOUSEEVENTHANDLER_HXX
  21 #define INCLUDED_SLIDESHOW_SOURCE_INC_MOUSEEVENTHANDLER_HXX
  22
  23 #include <memory>
  24
  25 namespace com { namespace sun { namespace star { namespace awt
  26 {
  27     struct MouseEvent;
  28 } } } }
  29
  30
  31 /* Definition of MouseEventHandler interface */
  32
  33 namespace slideshow
  34 {
  35     namespace internal
  36     {
  37
  38         /** Interface for handling mouse events.
  39
  40             Classes implementing this interface can be added to an
  41             EventMultiplexer object, and are called from there to
  42             handle mouse events.
  43          */
  44         class MouseEventHandler
  45         {
  46         public:
  47             virtual ~MouseEventHandler() {}
  48
  49             /** Handle a mouse button pressed event.
  50
  51                 @param e
  52                 The mouse event that occurred. The x,y coordinates of
  53                 the event are already transformed back to user
  54                 coordinate space, taking the inverse transform of the
  55                 view in which the event occurred.
  56
  57                 @return true, if this handler has successfully
  58                 processed the mouse event. When this method returns
  59                 false, possibly other, less prioritized handlers can be
  60                 called, too.
  61              */
  62             virtual bool handleMousePressed( const css::awt::MouseEvent& e ) = 0;
  63
  64             /** Handle a mouse button released event.
  65
  66                 @param e
  67                 The mouse event that occurred. The x,y coordinates of
  68                 the event are already transformed back to user
  69                 coordinate space, taking the inverse transform of the
  70                 view in which the event occurred.
  71
  72                 @return true, if this handler has successfully
  73                 processed the pause event. When this method returns
  74                 false, possibly other, less prioritized handlers are
  75                 called, too.
  76              */
  77             virtual bool handleMouseReleased( const css::awt::MouseEvent& e ) = 0;
  78
  79             /** Handle a mouse was moved with a pressed button event.
  80
  81                 @param e
  82                 The mouse event that occurred. The x,y coordinates of
  83                 the event are already transformed back to user
  84                 coordinate space, taking the inverse transform of the
  85                 view in which the event occurred.
  86
  87                 @return true, if this handler has successfully
  88                 processed the pause event. When this method returns
  89                 false, possibly other, less prioritized handlers are
  90                 called, too.
  91              */
  92             virtual bool handleMouseDragged( const css::awt::MouseEvent& e ) = 0;
  93
  94             /** Handle a mouse was moved event.
  95
  96                 @param e
  97                 The mouse event that occurred. The x,y coordinates of
  98                 the event are already transformed back to user
  99                 coordinate space, taking the inverse transform of the
 100                 view in which the event occurred.
 101
 102                 @return true, if this handler has successfully
 103                 processed the pause event. When this method returns
 104                 false, possibly other, less prioritized handlers are
 105                 called, too.
 106              */
 107             virtual bool handleMouseMoved( const css::awt::MouseEvent& e ) = 0;
 108         };
 109
 110         typedef ::std::shared_ptr< MouseEventHandler > MouseEventHandlerSharedPtr;
 111
 112     }
 113 }
 114
 115 #endif // INCLUDED_SLIDESHOW_SOURCE_INC_MOUSEEVENTHANDLER_HXX
 116
 117 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */