X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f8a7dd5f4162313d76ae2e2df46740f3a9e49071..ecdbd5b0374d4771f2b011cb65978fb8f8a5cce5:/include/wx/event.h diff --git a/include/wx/event.h b/include/wx/event.h index 225da47b42..c0629e53e6 100644 --- a/include/wx/event.h +++ b/include/wx/event.h @@ -27,6 +27,7 @@ #include "wx/thread.h" #include "wx/tracker.h" #include "wx/typeinfo.h" +#include "wx/any.h" #ifdef wxHAS_EVENT_BIND #include "wx/meta/convertible.h" @@ -78,25 +79,12 @@ typedef int wxEventType; // the wxEVENT_HANDLER_CAST-macro. #define wxStaticCastEvent(type, val) static_cast(val) -#define DECLARE_EVENT_TABLE_ENTRY(type, winid, idLast, fn, obj) \ +#define wxDECLARE_EVENT_TABLE_ENTRY(type, winid, idLast, fn, obj) \ wxEventTableEntry(type, winid, idLast, wxNewEventTableFunctor(type, fn), obj) -#define DECLARE_EVENT_TABLE_TERMINATOR() \ +#define wxDECLARE_EVENT_TABLE_TERMINATOR() \ wxEventTableEntry(wxEVT_NULL, 0, 0, 0, 0) -// obsolete event declaration/definition macros, we don't need them any longer -// but we keep them for compatibility as it doesn't cost us anything anyhow -#define BEGIN_DECLARE_EVENT_TYPES() -#define END_DECLARE_EVENT_TYPES() -#define DECLARE_EXPORTED_EVENT_TYPE(expdecl, name, value) \ - extern expdecl const wxEventType name; -#define DECLARE_EVENT_TYPE(name, value) \ - DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_CORE, name, value) -#define DECLARE_LOCAL_EVENT_TYPE(name, value) \ - DECLARE_EXPORTED_EVENT_TYPE(wxEMPTY_PARAMETER_VALUE, name, value) -#define DEFINE_EVENT_TYPE(name) const wxEventType name = wxNewEventType(); -#define DEFINE_LOCAL_EVENT_TYPE(name) DEFINE_EVENT_TYPE(name) - // generate a new unique event type extern WXDLLIMPEXP_BASE wxEventType wxNewEventType(); @@ -276,7 +264,7 @@ wxNewEventFunctor(const wxEventType& WXUNUSED(evtType), return new wxObjectEventFunctor(method, handler); } -// This version is used by DECLARE_EVENT_TABLE_ENTRY() +// This version is used by wxDECLARE_EVENT_TABLE_ENTRY() inline wxObjectEventFunctor * wxNewEventTableFunctor(const wxEventType& WXUNUSED(evtType), wxObjectEventFunction method) @@ -610,7 +598,7 @@ wxMakeEventFunctor(const EventTag&, method, handler); } -// Create an event functor for the event table via DECLARE_EVENT_TABLE_ENTRY: +// Create an event functor for the event table via wxDECLARE_EVENT_TABLE_ENTRY: // in this case we don't have the handler (as it's always the same as the // object which generated the event) so we must use Class as its type template @@ -995,6 +983,25 @@ public: return false; } + // This is also used only internally by ProcessEvent() to check if it + // should process the event normally or only restrict the search for the + // event handler to this object itself. + bool ShouldProcessOnlyIn(wxEvtHandler *h) const + { + return h == m_handlerToProcessOnlyIn; + } + + // Called to indicate that the result of ShouldProcessOnlyIn() wasn't taken + // into account. The existence of this function may seem counterintuitive + // but unfortunately it's needed by wxScrollHelperEvtHandler, see comments + // there. Don't even think of using this in your own code, this is a gross + // hack and is only needed because of wx complicated history and should + // never be used anywhere else. + void DidntHonourProcessOnlyIn() + { + m_handlerToProcessOnlyIn = NULL; + } + protected: wxObject* m_eventObject; wxEventType m_eventType; @@ -1005,6 +1012,10 @@ public: // m_callbackUserData is for internal usage only wxObject* m_callbackUserData; +private: + // If this handler + wxEvtHandler *m_handlerToProcessOnlyIn; + protected: // the propagation level: while it is positive, we propagate the event to // the parent window (if any) @@ -1027,6 +1038,10 @@ private: // it needs to access our m_propagationLevel friend class WXDLLIMPEXP_FWD_BASE wxPropagateOnce; + // and this one needs to access our m_handlerToProcessOnlyIn + friend class WXDLLIMPEXP_FWD_BASE wxEventProcessInHandlerOnly; + + DECLARE_ABSTRACT_CLASS(wxEvent) }; @@ -1078,6 +1093,29 @@ private: wxDECLARE_NO_COPY_CLASS(wxPropagateOnce); }; +// A helper object used to temporarily make wxEvent::ShouldProcessOnlyIn() +// return true for the handler passed to its ctor. +class wxEventProcessInHandlerOnly +{ +public: + wxEventProcessInHandlerOnly(wxEvent& event, wxEvtHandler *handler) + : m_event(event), + m_handlerToProcessOnlyInOld(event.m_handlerToProcessOnlyIn) + { + m_event.m_handlerToProcessOnlyIn = handler; + } + + ~wxEventProcessInHandlerOnly() + { + m_event.m_handlerToProcessOnlyIn = m_handlerToProcessOnlyInOld; + } + +private: + wxEvent& m_event; + wxEvtHandler * const m_handlerToProcessOnlyInOld; + + wxDECLARE_NO_COPY_CLASS(wxEventProcessInHandlerOnly); +}; #if wxUSE_GUI @@ -1203,6 +1241,10 @@ public: // make sure our string member (which uses COW, aka refcounting) is not // shared by other wxString instances: SetString(GetString().c_str()); + +#if wxUSE_ANY && (!defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(7)) + m_payload = event.m_payload; +#endif } virtual wxEvent *Clone() const @@ -1215,6 +1257,23 @@ public: virtual wxEventCategory GetEventCategory() const { return wxEVT_CATEGORY_THREAD; } +#if wxUSE_ANY && (!defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(7)) + template + void SetPayload(const T& payload) + { + m_payload = payload; + } + + template + T GetPayload() const + { + return m_payload.As(); + } + +protected: + wxAny m_payload; +#endif // wxUSE_ANY && (!defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(7)) + private: DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxThreadEvent) }; @@ -2944,6 +3003,20 @@ public: bool SafelyProcessEvent(wxEvent& event); // NOTE: uses ProcessEvent() + // This method tries to process the event in this event handler, including + // any preprocessing done by TryBefore() and all the handlers chained to + // it, but excluding the post-processing done in TryAfter(). + // + // It is meant to be called from ProcessEvent() only and is not virtual, + // additional event handlers can be hooked into the normal event processing + // logic using TryBefore() and TryAfter() hooks. + // + // You can also call it yourself to forward an event to another handler but + // without propagating it upwards if it's unhandled (this is usually + // unwanted when forwarding as the original handler would already do it if + // needed normally). + bool ProcessEventLocally(wxEvent& event); + // 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 // from multiple threads although you still need to ensure that wxString @@ -3156,14 +3229,6 @@ public: void OnSinkDestroyed( wxEvtHandler *sink ); - // 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 - // logic using TryBefore() and TryAfter() hooks. - bool ProcessEventHere(wxEvent& event); - - private: void DoBind(int winid, int lastId, @@ -3188,6 +3253,20 @@ protected: // validators. virtual bool TryBefore(wxEvent& event); + // This one is not a hook but just a helper which looks up the handler in + // this object itself. + // + // It is called from ProcessEventLocally() and normally shouldn't be called + // directly as doing it would ignore any chained event handlers + bool TryHereOnly(wxEvent& event); + + // Another helper which simply calls pre-processing hook and then tries to + // handle the event at this handler level. + bool TryBeforeAndHere(wxEvent& event) + { + return TryBefore(event) || TryHereOnly(event); + } + // this one is called after failing to find the event handle in our own // table to give a chance to the other windows to process it // @@ -3252,6 +3331,9 @@ private: // pass the event to wxTheApp instance, called from TryAfter() bool DoTryApp(wxEvent& event); + // try to process events in all handlers chained to this one + bool DoTryChain(wxEvent& event); + DECLARE_DYNAMIC_CLASS_NO_COPY(wxEvtHandler) }; @@ -3481,20 +3563,20 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& // N.B. In GNU-WIN32, you *have* to take the address of a member function // (use &) or the compiler crashes... -#define DECLARE_EVENT_TABLE() \ - private: \ - static const wxEventTableEntry sm_eventTableEntries[]; \ - protected: \ - static const wxEventTable sm_eventTable; \ - virtual const wxEventTable* GetEventTable() const; \ - static wxEventHashTable sm_eventHashTable; \ - virtual wxEventHashTable& GetEventHashTable() const; +#define wxDECLARE_EVENT_TABLE() \ + private: \ + static const wxEventTableEntry sm_eventTableEntries[]; \ + protected: \ + static const wxEventTable sm_eventTable; \ + virtual const wxEventTable* GetEventTable() const; \ + static wxEventHashTable sm_eventHashTable; \ + virtual wxEventHashTable& GetEventHashTable() const // N.B.: when building DLL with Borland C++ 5.5 compiler, you must initialize // sm_eventTable before using it in GetEventTable() or the compiler gives // E2233 (see http://groups.google.com/groups?selm=397dcc8a%241_2%40dnews) -#define BEGIN_EVENT_TABLE(theClass, baseClass) \ +#define wxBEGIN_EVENT_TABLE(theClass, baseClass) \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ const wxEventTable *theClass::GetEventTable() const \ @@ -3504,7 +3586,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& { return theClass::sm_eventHashTable; } \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE1(theClass, baseClass, T1) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE1(theClass, baseClass, T1) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3519,7 +3601,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE2(theClass, baseClass, T1, T2) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE2(theClass, baseClass, T1, T2) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3534,7 +3616,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE3(theClass, baseClass, T1, T2, T3) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE3(theClass, baseClass, T1, T2, T3) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3549,7 +3631,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE4(theClass, baseClass, T1, T2, T3, T4) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE4(theClass, baseClass, T1, T2, T3, T4) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3564,7 +3646,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE5(theClass, baseClass, T1, T2, T3, T4, T5) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE5(theClass, baseClass, T1, T2, T3, T4, T5) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3579,7 +3661,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE7(theClass, baseClass, T1, T2, T3, T4, T5, T6, T7) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE7(theClass, baseClass, T1, T2, T3, T4, T5, T6, T7) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3594,7 +3676,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define BEGIN_EVENT_TABLE_TEMPLATE8(theClass, baseClass, T1, T2, T3, T4, T5, T6, T7, T8) \ +#define wxBEGIN_EVENT_TABLE_TEMPLATE8(theClass, baseClass, T1, T2, T3, T4, T5, T6, T7, T8) \ template \ const wxEventTable theClass::sm_eventTable = \ { &baseClass::sm_eventTable, &theClass::sm_eventTableEntries[0] }; \ @@ -3609,7 +3691,8 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& template \ const wxEventTableEntry theClass::sm_eventTableEntries[] = { \ -#define END_EVENT_TABLE() DECLARE_EVENT_TABLE_TERMINATOR() }; +#define wxEND_EVENT_TABLE() \ + wxDECLARE_EVENT_TABLE_TERMINATOR() }; /* * Event table macros @@ -3623,7 +3706,7 @@ typedef void (wxEvtHandler::*wxClipboardTextEventFunction)(wxClipboardTextEvent& // - id1, id2 ids of the first/last id // - fn the function (should be cast to the right type) #define wx__DECLARE_EVT2(evt, id1, id2, fn) \ - DECLARE_EVENT_TABLE_ENTRY(evt, id1, id2, fn, NULL), + wxDECLARE_EVENT_TABLE_ENTRY(evt, id1, id2, fn, NULL), #define wx__DECLARE_EVT1(evt, id, fn) \ wx__DECLARE_EVT2(evt, id, wxID_ANY, fn) #define wx__DECLARE_EVT0(evt, fn) \ @@ -3935,4 +4018,39 @@ WXDLLIMPEXP_CORE wxWindow* wxFindFocusDescendant(wxWindow* ancestor); #endif // wxUSE_GUI + +// ---------------------------------------------------------------------------- +// Compatibility macro aliases +// ---------------------------------------------------------------------------- + +// deprecated variants _not_ requiring a semicolon after them and without wx prefix +// (note that also some wx-prefixed macro do _not_ require a semicolon because +// it's not always possible to force the compire to require it) + +#define DECLARE_EVENT_TABLE_ENTRY(type, winid, idLast, fn, obj) \ + wxDECLARE_EVENT_TABLE_ENTRY(type, winid, idLast, fn, obj) +#define DECLARE_EVENT_TABLE_TERMINATOR() wxDECLARE_EVENT_TABLE_TERMINATOR() +#define DECLARE_EVENT_TABLE() wxDECLARE_EVENT_TABLE(); +#define BEGIN_EVENT_TABLE(a,b) wxBEGIN_EVENT_TABLE(a,b) +#define BEGIN_EVENT_TABLE_TEMPLATE1(a,b,c) wxBEGIN_EVENT_TABLE_TEMPLATE1(a,b,c) +#define BEGIN_EVENT_TABLE_TEMPLATE2(a,b,c,d) wxBEGIN_EVENT_TABLE_TEMPLATE1(a,b,c,d) +#define BEGIN_EVENT_TABLE_TEMPLATE3(a,b,c,d,e) wxBEGIN_EVENT_TABLE_TEMPLATE1(a,b,c,d,e) +#define BEGIN_EVENT_TABLE_TEMPLATE4(a,b,c,d,e,f) wxBEGIN_EVENT_TABLE_TEMPLATE1(a,b,c,d,e,f) +#define BEGIN_EVENT_TABLE_TEMPLATE5(a,b,c,d,e,f,g) wxBEGIN_EVENT_TABLE_TEMPLATE1(a,b,c,d,e,f,g) +#define BEGIN_EVENT_TABLE_TEMPLATE6(a,b,c,d,e,f,g,h) wxBEGIN_EVENT_TABLE_TEMPLATE1(a,b,c,d,e,f,g,h) +#define END_EVENT_TABLE() wxEND_EVENT_TABLE() + +// other obsolete event declaration/definition macros; we don't need them any longer +// but we keep them for compatibility as it doesn't cost us anything anyhow +#define BEGIN_DECLARE_EVENT_TYPES() +#define END_DECLARE_EVENT_TYPES() +#define DECLARE_EXPORTED_EVENT_TYPE(expdecl, name, value) \ + extern expdecl const wxEventType name; +#define DECLARE_EVENT_TYPE(name, value) \ + DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_CORE, name, value) +#define DECLARE_LOCAL_EVENT_TYPE(name, value) \ + DECLARE_EXPORTED_EVENT_TYPE(wxEMPTY_PARAMETER_VALUE, name, value) +#define DEFINE_EVENT_TYPE(name) const wxEventType name = wxNewEventType(); +#define DEFINE_LOCAL_EVENT_TYPE(name) DEFINE_EVENT_TYPE(name) + #endif // _WX_EVENT_H_