X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/898a466aef28f9a1d8266205f376dd22eaacf855..99d82720737ebf91d3a387d53dd0cf6c8cf9a643:/include/wx/event.h diff --git a/include/wx/event.h b/include/wx/event.h index cd8b991501..db64d8c6c6 100644 --- a/include/wx/event.h +++ b/include/wx/event.h @@ -94,6 +94,11 @@ typedef int wxEventType; // generate a new unique event type extern WXDLLIMPEXP_BASE wxEventType wxNewEventType(); +// FIXME: currently the new events code is disabled because it creates too +// many problems, it should be reenabled a.s.a.p. or removed +#undef wxEVENTS_COMPATIBILITY_2_8 +#define wxEVENTS_COMPATIBILITY_2_8 1 + // macros to create an event type depending on whether type safe events are // enabled. @@ -104,11 +109,11 @@ extern WXDLLIMPEXP_BASE wxEventType wxNewEventType(); #define wxDECLARE_EXPORTED_EVENT( expdecl, name, type ) \ extern const expdecl wxEventType name; - #define wxDEFINE_EVENT_REFERENCE( name, type, value ) \ - const wxEventType &name( value ); + #define wxDEFINE_EVENT_ALIAS( name, type, value ) \ + const wxEventType name = value; - #define wxDECLARE_EXPORTED_EVENT_REFERENCE( expdecl, name, type ) \ - extern const expdecl wxEventType &name; + #define wxDECLARE_EXPORTED_EVENT_ALIAS( expdecl, name, type ) \ + extern const expdecl wxEventType name; #define wxDECLARE_LOCAL_EVENT( name, type ) \ wxDECLARE_EXPORTED_EVENT( wxEMPTY_PARAMETER_VALUE, name, type ) @@ -122,11 +127,11 @@ extern WXDLLIMPEXP_BASE wxEventType wxNewEventType(); #define wxDECLARE_EXPORTED_EVENT( expdecl, name, type ) \ extern const expdecl wxTypedEventType< type > name; - #define wxDEFINE_EVENT_REFERENCE( name, type, value ) \ - const wxTypedEventTypeReference< type > name( value ); + #define wxDEFINE_EVENT_ALIAS( name, type, value ) \ + const wxTypedEventType< type > name( value ); - #define wxDECLARE_EXPORTED_EVENT_REFERENCE( expdecl, name, type ) \ - extern const expdecl wxTypedEventTypeReference< type > name; + #define wxDECLARE_EXPORTED_EVENT_ALIAS( expdecl, name, type ) \ + extern const expdecl wxTypedEventType< type > name; #define wxDECLARE_LOCAL_EVENT( name, type ) \ wxDECLARE_EXPORTED_EVENT( wxEMPTY_PARAMETER_VALUE, name, type ) @@ -154,30 +159,6 @@ private: wxEventType m_type; }; -// Due to a bug in older wx versions wxSpinEvents were being sent with type of -// wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But -// with the type-safe events in place, these event types are associated with -// wxScrollEvent. To allow handling of spin events, new event types have been -// defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility -// the spin event types are being initialized with the scroll event types. But -// this presents as with the same static initialization order problem we also -// have for the static event tables. So we use the same solution and the -// template definition below holds a reference to a wxEventType. -template -class WXDLLIMPEXP_BASE wxTypedEventTypeReference -{ -public: - typedef Event CorrespondingEvent; - - wxTypedEventTypeReference(const wxEventType& type) : m_type(type) { } - - // used for static event tables - operator const wxEventType&() const { return m_type; } - -private: - const wxEventType &m_type; -}; - #endif // !wxEVENTS_COMPATIBILITY_2_8 // These are needed for the functor definitions @@ -248,7 +229,7 @@ private: // value is used by the event table macros inline wxObjectEventFunctor * -wxNewEventFunctor(wxEventType WXUNUSED(evtType), +wxNewEventFunctor(const wxEventType& WXUNUSED(evtType), wxObjectEventFunction method, wxEvtHandler *handler = NULL) { @@ -256,7 +237,7 @@ wxNewEventFunctor(wxEventType WXUNUSED(evtType), } inline wxObjectEventFunctor -wxConstructEventFunctor(wxEventType WXUNUSED(evtType), +wxConstructEventFunctor(const wxEventType& WXUNUSED(evtType), wxObjectEventFunction method, wxEvtHandler *handler) { @@ -490,6 +471,7 @@ class WXDLLIMPEXP_FWD_CORE wxKeyEvent; class WXDLLIMPEXP_FWD_CORE wxNavigationKeyEvent; class WXDLLIMPEXP_FWD_CORE wxSetCursorEvent; class WXDLLIMPEXP_FWD_CORE wxScrollEvent; +class WXDLLIMPEXP_FWD_CORE wxSpinEvent; class WXDLLIMPEXP_FWD_CORE wxScrollWinEvent; class WXDLLIMPEXP_FWD_CORE wxSizeEvent; class WXDLLIMPEXP_FWD_CORE wxMoveEvent; @@ -587,6 +569,21 @@ wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_SCROLL_THUMBTRACK, wxScrollEven wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent) wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_SCROLL_CHANGED, wxScrollEvent) +// Due to a bug in older wx versions, wxSpinEvents were being sent with type of +// wxEVT_SCROLL_LINEUP, wxEVT_SCROLL_LINEDOWN and wxEVT_SCROLL_THUMBTRACK. But +// with the type-safe events in place, these event types are associated with +// wxScrollEvent. To allow handling of spin events, new event types have been +// defined in spinbutt.h/spinnbuttcmn.cpp. To maintain backward compatibility +// the spin event types are being initialized with the scroll event types. + +#if wxUSE_SPINBTN + +wxDECLARE_EXPORTED_EVENT_ALIAS( WXDLLIMPEXP_CORE, wxEVT_SPIN_UP, wxSpinEvent ) +wxDECLARE_EXPORTED_EVENT_ALIAS( WXDLLIMPEXP_CORE, wxEVT_SPIN_DOWN, wxSpinEvent ) +wxDECLARE_EXPORTED_EVENT_ALIAS( WXDLLIMPEXP_CORE, wxEVT_SPIN, wxSpinEvent ) + +#endif + // Scroll events from wxWindow wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_SCROLLWIN_TOP, wxScrollWinEvent) wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent) @@ -713,7 +710,7 @@ public: void Skip(bool skip = true) { m_skipped = skip; } bool GetSkipped() const { return m_skipped; } - // this function is used to create a copy of the event polymorphically and + // This function is used to create a copy of the event polymorphically and // all derived classes must implement it because otherwise wxPostEvent() // for them wouldn't work (it needs to do a copy of the event) virtual wxEvent *Clone() const = 0; @@ -742,6 +739,20 @@ public: m_propagationLevel = propagationLevel; } + + // This is for internal use only and is only called by + // wxEvtHandler::ProcessEvent() to check whether it's the first time this + // event is being processed + bool WasProcessed() + { + if ( m_wasProcessed ) + return true; + + m_wasProcessed = true; + + return false; + } + protected: wxObject* m_eventObject; wxEventType m_eventType; @@ -763,6 +774,12 @@ protected: bool m_skipped; bool m_isCommandEvent; + // initially false but becomes true as soon as WasProcessed() is called for + // the first time, as this is done only by ProcessEvent() it explains the + // variable name: it becomes true after ProcessEvent() was called at least + // once for this event + bool m_wasProcessed; + protected: wxEvent(const wxEvent&); // for implementing Clone() wxEvent& operator=(const wxEvent&); // for derived classes operator=() @@ -2643,14 +2660,27 @@ public: wxEvtHandler(); virtual ~wxEvtHandler(); + + // Event handler chain + // ------------------- + wxEvtHandler *GetNextHandler() const { return m_nextHandler; } wxEvtHandler *GetPreviousHandler() const { return m_previousHandler; } - void SetNextHandler(wxEvtHandler *handler) { m_nextHandler = handler; } - void SetPreviousHandler(wxEvtHandler *handler) { m_previousHandler = handler; } + virtual void SetNextHandler(wxEvtHandler *handler) { m_nextHandler = handler; } + virtual void SetPreviousHandler(wxEvtHandler *handler) { m_previousHandler = handler; } void SetEvtHandlerEnabled(bool enabled) { m_enabled = enabled; } bool GetEvtHandlerEnabled() const { return m_enabled; } + void Unlink(); + bool IsUnlinked() const; + + + + // Event queuing and processing + // ---------------------------- + + // Process an event right now: this can only be called from the main // thread, use QueueEvent() for scheduling the events for // processing from other threads. @@ -2661,6 +2691,7 @@ public: // when called from C code (e.g. in GTK+ callback) when the exception // wouldn't correctly propagate to wxEventLoop. bool SafelyProcessEvent(wxEvent& event); + // NOTE: uses ProcessEvent() // Schedule the given event to be processed later. It takes ownership of // the event pointer, i.e. it will be deleted later. This is safe to call @@ -2683,11 +2714,17 @@ public: } void ProcessPendingEvents(); + // NOTE: uses ProcessEvent() #if wxUSE_THREADS bool ProcessThreadEvent(const wxEvent& event); + // NOTE: uses AddPendingEvent() #endif + + // Connecting and disconnecting + // ---------------------------- + // Dynamic association of a member function handler with the event handler, // winid and event type void Connect(int winid, @@ -3076,12 +3113,7 @@ public: void OnSinkDestroyed( wxEvtHandler *sink ); - // The method processing the event in this event handler (or rather in this - // event handler chain as it also tries the next handler and so on), i.e. - // it returns true if we processed this event or false if we didn't but - // does not call TryParent() in the latter case. It also doesn't call - // wxApp::FilterEvent() before processing it, this is supposed to be done - // by the public ProcessEvent() only once for every event we handle. + // The method tries to process the event in this event handler. // // It is meant to be called from ProcessEvent() only and is not virtual, // additional event handlers can be hooked into the normal event processing