X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/be52b34172dede7460990c54b9f7e2dad3a6f876..0555b2a0a3c509687e7fc5aeb160f5171b7e6311:/include/wx/app.h diff --git a/include/wx/app.h b/include/wx/app.h index 489194ab3b..a0fe4afee1 100644 --- a/include/wx/app.h +++ b/include/wx/app.h @@ -6,179 +6,134 @@ // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem +// Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_APP_H_BASE_ #define _WX_APP_H_BASE_ -#ifdef __GNUG__ - #pragma interface "appbase.h" -#endif - -// ---------------------------------------------------------------------------- -// typedefs -// ---------------------------------------------------------------------------- - -#if (defined(__WXMSW__) && !defined(__WXMICROWIN__)) || defined (__WXPM__) - class WXDLLEXPORT wxApp; - typedef wxApp* (*wxAppInitializerFunction)(); -#else - // returning wxApp* won't work with gcc - #include "wx/object.h" - - typedef wxObject* (*wxAppInitializerFunction)(); -#endif - -class WXDLLEXPORT wxCmdLineParser; - // ---------------------------------------------------------------------------- // headers we have to include here // ---------------------------------------------------------------------------- #include "wx/event.h" // for the base class +#include "wx/eventfilter.h" // (and another one) +#include "wx/build.h" +#include "wx/cmdargs.h" // for wxCmdLineArgsArray used by wxApp::argv +#include "wx/init.h" // we must declare wxEntry() +#include "wx/intl.h" // for wxLayoutDirection +#include "wx/log.h" // for wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD() -#if wxUSE_GUI - #include "wx/window.h" // for wxTopLevelWindows -#endif // wxUSE_GUI - -#if wxUSE_LOG - #include "wx/log.h" -#endif +class WXDLLIMPEXP_FWD_BASE wxAppConsole; +class WXDLLIMPEXP_FWD_BASE wxAppTraits; +class WXDLLIMPEXP_FWD_BASE wxCmdLineParser; +class WXDLLIMPEXP_FWD_BASE wxEventLoopBase; +class WXDLLIMPEXP_FWD_BASE wxMessageOutput; -#if WXWIN_COMPATIBILITY_2_2 - #include "wx/icon.h" +#if wxUSE_GUI + struct WXDLLIMPEXP_FWD_CORE wxVideoMode; + class WXDLLIMPEXP_FWD_CORE wxWindow; #endif -#include "wx/build.h" +// this macro should be used in any main() or equivalent functions defined in wx +#define wxDISABLE_DEBUG_SUPPORT() \ + wxDISABLE_ASSERTS_IN_RELEASE_BUILD(); \ + wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD() // ---------------------------------------------------------------------------- -// constants +// typedefs // ---------------------------------------------------------------------------- -static const int wxPRINT_WINDOWS = 1; -static const int wxPRINT_POSTSCRIPT = 2; +// the type of the function used to create a wxApp object on program start up +typedef wxAppConsole* (*wxAppInitializerFunction)(); // ---------------------------------------------------------------------------- -// support for framebuffer ports +// constants // ---------------------------------------------------------------------------- -#if wxUSE_GUI -// VS: Fullscreen/framebuffer application needs to choose display mode prior -// to wxWindows initialization. This class holds information about display -// mode. It is used by wxApp::Set/GetDisplayMode. -class WXDLLEXPORT wxDisplayModeInfo +enum { -public: - wxDisplayModeInfo() : m_ok(FALSE) {} - wxDisplayModeInfo(unsigned width, unsigned height, unsigned depth) - : m_width(width), m_height(height), m_depth(depth), m_ok(TRUE) {} - - unsigned GetWidth() const { return m_width; } - unsigned GetHeight() const { return m_height; } - unsigned GetDepth() const { return m_depth; } - bool IsOk() const { return m_ok; } - -private: - unsigned m_width, m_height, m_depth; - bool m_ok; + wxPRINT_WINDOWS = 1, + wxPRINT_POSTSCRIPT = 2 }; -#endif // ---------------------------------------------------------------------------- -// the common part of wxApp implementations for all platforms +// global variables // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxAppBase : public wxEvtHandler +// use of this list is strongly deprecated, use wxApp ScheduleForDestruction() +// and IsScheduledForDestruction() methods instead of this list directly, it +// is here for compatibility purposes only +extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete; + +// ---------------------------------------------------------------------------- +// wxAppConsoleBase: wxApp for non-GUI applications +// ---------------------------------------------------------------------------- + +class WXDLLIMPEXP_BASE wxAppConsoleBase : public wxEvtHandler, + public wxEventFilter { - DECLARE_NO_COPY_CLASS(wxAppBase) - public: - wxAppBase(); - virtual ~wxAppBase(); + // ctor and dtor + wxAppConsoleBase(); + virtual ~wxAppConsoleBase(); + // the virtual functions which may/must be overridden in the derived class // ----------------------------------------------------------------------- - // called during the program initialization, returning FALSE from here - // prevents the program from continuing - it's a good place to create - // the top level program window and return TRUE. - // - // Override: always in GUI application, rarely in console ones. + // This is the very first function called for a newly created wxApp object, + // it is used by the library to do the global initialization. If, for some + // reason, you must override it (instead of just overriding OnInit(), as + // usual, for app-specific initializations), do not forget to call the base + // class version! + virtual bool Initialize(int& argc, wxChar **argv); + + // This gives wxCocoa a chance to call OnInit() with a memory pool in place + virtual bool CallOnInit() { return OnInit(); } + + // Called before OnRun(), this is a good place to do initialization -- if + // anything fails, return false from here to prevent the program from + // continuing. The command line is normally parsed here, call the base + // class OnInit() to do it. virtual bool OnInit(); -#if wxUSE_GUI - // a platform-dependent version of OnInit(): the code here is likely to - // depend on the toolkit. default version does nothing. - // - // Override: rarely. - virtual bool OnInitGui(); -#endif // wxUSE_GUI + // This is the replacement for the normal main(): all program work should + // be done here. When OnRun() returns, the programs starts shutting down. + virtual int OnRun(); - // called to start program execution - the default version just enters - // the main GUI loop in which events are received and processed until - // the last window is not deleted (if GetExitOnFrameDelete) or - // ExitMainLoop() is called. In console mode programs, the execution - // of the program really starts here - // - // Override: rarely in GUI applications, always in console ones. -#if wxUSE_GUI - virtual int OnRun() { return MainLoop(); }; -#else // !GUI - virtual int OnRun() = 0; -#endif // wxUSE_GUI + // This is called by wxEventLoopBase::SetActive(): you should put the code + // which needs an active event loop here. + // Note that this function is called whenever an event loop is activated; + // you may want to use wxEventLoopBase::IsMain() to perform initialization + // specific for the app's main event loop. + virtual void OnEventLoopEnter(wxEventLoopBase* WXUNUSED(loop)) {} - // called after the main loop termination. This is a good place for - // cleaning up (it may be too late in dtor) and is also useful if you - // want to return some non-default exit code - this is just the return - // value of this method. - // - // Override: often. + // This is only called if OnInit() returned true so it's a good place to do + // any cleanup matching the initializations done there. virtual int OnExit(); - // called when a fatal exception occurs, this function should take care - // not to do anything which might provoke a nested exception! It may be - // overridden if you wish to react somehow in non-default way (core - // dump under Unix, application crash under Windows) to fatal program - // errors, however extreme care should be taken if you don't want this - // function to crash. - // - // Override: rarely. + // This is called by wxEventLoopBase::OnExit() for each event loop which + // is exited. + virtual void OnEventLoopExit(wxEventLoopBase* WXUNUSED(loop)) {} + + // This is the very last function called on wxApp object before it is + // destroyed. If you override it (instead of overriding OnExit() as usual) + // do not forget to call the base class version! + virtual void CleanUp(); + + // Called when a fatal exception occurs, this function should take care not + // to do anything which might provoke a nested exception! It may be + // overridden if you wish to react somehow in non-default way (core dump + // under Unix, application crash under Windows) to fatal program errors, + // however extreme care should be taken if you don't want this function to + // crash. virtual void OnFatalException() { } - // the worker functions - usually not used directly by the user code - // ----------------------------------------------------------------- - -#if wxUSE_GUI - // execute the main GUI loop, the function returns when the loop ends - virtual int MainLoop() = 0; - - // exit the main GUI loop during the next iteration (i.e. it does not - // stop the program immediately!) - virtual void ExitMainLoop() = 0; - - // returns TRUE if the program is initialized - virtual bool Initialized() = 0; - - // returns TRUE if there are unprocessed events in the event queue - virtual bool Pending() = 0; + // Called from wxExit() function, should terminate the application a.s.a.p. + virtual void Exit(); - // process the first event in the event queue (blocks until an event - // apperas if there are none currently) - virtual void Dispatch() = 0; - - // process all currently pending events right now - // - // it is an error to call Yield() recursively unless the value of - // onlyIfNeeded is TRUE - // - // WARNING: this function is dangerous as it can lead to unexpected - // reentrancies (i.e. when called from an event handler it - // may result in calling the same event handler again), use - // with _extreme_ care or, better, don't use at all! - virtual bool Yield(bool onlyIfNeeded = FALSE) = 0; -#endif // wxUSE_GUI // application info: name, description, vendor // ------------------------------------------- @@ -188,15 +143,20 @@ public: // be argv[0] // set/get the application name - wxString GetAppName() const - { - if ( !m_appName ) - return m_className; - else - return m_appName; - } + wxString GetAppName() const; void SetAppName(const wxString& name) { m_appName = name; } + // set/get the application display name: the display name is the name + // shown to the user in titles, reports, etc while the app name is + // used for paths, config, and other places the user doesn't see + // + // by default the display name is the same as app name or a capitalized + // version of the program if app name was not set neither but it's + // usually better to set it explicitly to something nicer + wxString GetAppDisplayName() const; + + void SetAppDisplayName(const wxString& name) { m_appDisplayName = name; } + // set/get the app class name wxString GetClassName() const { return m_className; } void SetClassName(const wxString& name) { m_className = name; } @@ -205,38 +165,19 @@ public: const wxString& GetVendorName() const { return m_vendorName; } void SetVendorName(const wxString& name) { m_vendorName = name; } -#if wxUSE_GUI - // top level window functions - // -------------------------- - - // return TRUE if our app has focus - virtual bool IsActive() const { return m_isActive; } - - // set the "main" top level window - void SetTopWindow(wxWindow *win) { m_topWindow = win; } - - // return the "main" top level window (if it hadn't been set previously - // with SetTopWindow(), will return just some top level window and, if - // there are none, will return NULL) - virtual wxWindow *GetTopWindow() const + // set/get the vendor display name: the display name is shown + // in titles/reports/dialogs to the user, while the vendor name + // is used in some areas such as wxConfig, wxStandardPaths, etc + const wxString& GetVendorDisplayName() const { - if (m_topWindow) - return m_topWindow; - else if (wxTopLevelWindows.GetCount() > 0) - return wxTopLevelWindows.GetFirst()->GetData(); - else - return (wxWindow *)NULL; + return m_vendorDisplayName.empty() ? GetVendorName() + : m_vendorDisplayName; + } + void SetVendorDisplayName(const wxString& name) + { + m_vendorDisplayName = name; } - // control the exit behaviour: by default, the program will exit the - // main loop (and so, usually, terminate) when the last top-level - // program window is deleted. Beware that if you disabel this (with - // SetExitOnFrameDelete(FALSE)), you'll have to call ExitMainLoop() - // explicitly from somewhere. - void SetExitOnFrameDelete(bool flag) { m_exitOnFrameDelete = flag; } - bool GetExitOnFrameDelete() const { return m_exitOnFrameDelete; } - -#endif // wxUSE_GUI // cmd line parsing stuff // ---------------------- @@ -250,70 +191,198 @@ public: #if wxUSE_CMDLINE_PARSER // this one is called from OnInit() to add all supported options - // to the given parser + // to the given parser (don't forget to call the base class version if you + // override it!) virtual void OnInitCmdLine(wxCmdLineParser& parser); - // called after successfully parsing the command line, return TRUE - // to continue and FALSE to exit + // called after successfully parsing the command line, return true + // to continue and false to exit (don't forget to call the base class + // version if you override it!) virtual bool OnCmdLineParsed(wxCmdLineParser& parser); - // called if "--help" option was specified, return TRUE to continue - // and FALSE to exit + // called if "--help" option was specified, return true to continue + // and false to exit virtual bool OnCmdLineHelp(wxCmdLineParser& parser); // called if incorrect command line options were given, return - // FALSE to abort and TRUE to continue + // false to abort and true to continue virtual bool OnCmdLineError(wxCmdLineParser& parser); #endif // wxUSE_CMDLINE_PARSER + // miscellaneous customization functions // ------------------------------------- -#if wxUSE_LOG - // override this function to create default log target of arbitrary - // user-defined class (default implementation creates a wxLogGui - // object) - this log object is used by default by all wxLogXXX() - // functions. - virtual wxLog *CreateLogTarget() - #if wxUSE_GUI && wxUSE_LOGGUI && !defined(__WXMICROWIN__) - { return new wxLogGui; } - #else // !GUI - { return new wxLogStderr; } - #endif // wxUSE_GUI -#endif // wxUSE_LOG + // create the app traits object to which we delegate for everything which + // either should be configurable by the user (then he can change the + // default behaviour simply by overriding CreateTraits() and returning his + // own traits object) or which is GUI/console dependent as then wxAppTraits + // allows us to abstract the differences behind the common facade + wxAppTraits *GetTraits(); -#if wxUSE_GUI + // this function provides safer access to traits object than + // wxTheApp->GetTraits() during startup or termination when the global + // application object itself may be unavailable + // + // of course, it still returns NULL in this case and the caller must check + // for it + static wxAppTraits *GetTraitsIfExists(); + + // returns the main event loop instance, i.e. the event loop which is started + // by OnRun() and which dispatches all events sent from the native toolkit + // to the application (except when new event loops are temporarily set-up). + // The returned value maybe NULL. Put initialization code which needs a + // non-NULL main event loop into OnEventLoopEnter(). + wxEventLoopBase* GetMainLoop() const + { return m_mainLoop; } + + // This function sets the C locale to the default locale for the current + // environment. It is advised to call this to ensure that the underlying + // toolkit uses the locale in which the numbers and monetary amounts are + // shown in the format expected by user and so on. + // + // Notice that this does _not_ change the global C++ locale, you need to do + // it explicitly if you want. + // + // Finally, notice that while this function is virtual, it is not supposed + // to be overridden outside of the library itself. + virtual void SetCLocale(); - #if WXWIN_COMPATIBILITY_2_2 - // get the standard icon used by wxWin dialogs - this allows the user - // to customize the standard dialogs. The 'which' parameter is one of - // wxICON_XXX values - virtual wxIcon GetStdIcon(int WXUNUSED(which)) const { return wxNullIcon; } - #endif - // Get display mode that is used use. This is only used in framebuffer wxWin ports - // (such as wxMGL). - virtual wxDisplayModeInfo GetDisplayMode() const { return wxDisplayModeInfo(); } - // Set display mode to use. This is only used in framebuffer wxWin ports - // (such as wxMGL). This method should be called from wxApp:OnInitGui - virtual bool SetDisplayMode(const wxDisplayModeInfo& WXUNUSED(info)) { return TRUE; } + // event processing functions + // -------------------------- - // set use of best visual flag (see below) - void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; } - bool GetUseBestVisual() const { return m_useBestVisual; } + // Implement the inherited wxEventFilter method but just return -1 from it + // to indicate that default processing should take place. + virtual int FilterEvent(wxEvent& event); - // set/get printing mode: see wxPRINT_XXX constants. - // - // default behaviour is the normal one for Unix: always use PostScript - // printing. - virtual void SetPrintMode(int WXUNUSED(mode)) { } - int GetPrintMode() const { return wxPRINT_POSTSCRIPT; } + // return true if we're running event loop, i.e. if the events can + // (already) be dispatched + static bool IsMainLoopRunning(); + +#if wxUSE_EXCEPTIONS + // execute the functor to handle the given event + // + // this is a generalization of HandleEvent() below and the base class + // implementation of CallEventHandler() still calls HandleEvent() for + // compatibility for functors which are just wxEventFunctions (i.e. methods + // of wxEvtHandler) + virtual void CallEventHandler(wxEvtHandler *handler, + wxEventFunctor& functor, + wxEvent& event) const; + + // call the specified handler on the given object with the given event + // + // this method only exists to allow catching the exceptions thrown by any + // event handler, it would lead to an extra (useless) virtual function call + // if the exceptions were not used, so it doesn't even exist in that case + virtual void HandleEvent(wxEvtHandler *handler, + wxEventFunction func, + wxEvent& event) const; + + // Called when an unhandled C++ exception occurs inside OnRun(): note that + // the main event loop has already terminated by now and the program will + // exit, if you need to really handle the exceptions you need to override + // OnExceptionInMainLoop() + virtual void OnUnhandledException(); + + // Function called if an uncaught exception is caught inside the main + // event loop: it may return true to continue running the event loop or + // false to stop it (in the latter case it may rethrow the exception as + // well) + virtual bool OnExceptionInMainLoop(); + +#endif // wxUSE_EXCEPTIONS + + + // pending events + // -------------- + + // IMPORTANT: all these methods conceptually belong to wxEventLoopBase + // but for many reasons we need to allow queuing of events + // even when there's no event loop (e.g. in wxApp::OnInit); + // this feature is used e.g. to queue events on secondary threads + // or in wxPython to use wx.CallAfter before the GUI is initialized + + // process all events in the m_handlersWithPendingEvents list -- it is necessary + // to call this function to process posted events. This happens during each + // event loop iteration in GUI mode but if there is no main loop, it may be + // also called directly. + virtual void ProcessPendingEvents(); + + // check if there are pending events on global pending event list + bool HasPendingEvents() const; + + // temporary suspends processing of the pending events + void SuspendProcessingOfPendingEvents(); + + // resume processing of the pending events previously stopped because of a + // call to SuspendProcessingOfPendingEvents() + void ResumeProcessingOfPendingEvents(); + + // called by ~wxEvtHandler to (eventually) remove the handler from the list of + // the handlers with pending events + void RemovePendingEventHandler(wxEvtHandler* toRemove); + + // adds an event handler to the list of the handlers with pending events + void AppendPendingEventHandler(wxEvtHandler* toAppend); + + // moves the event handler from the list of the handlers with pending events + //to the list of the handlers with _delayed_ pending events + void DelayPendingEventHandler(wxEvtHandler* toDelay); + + // deletes the current pending events + void DeletePendingEvents(); + + + // delayed destruction + // ------------------- + + // If an object may have pending events for it, it shouldn't be deleted + // immediately as this would result in a crash when trying to handle these + // events: instead, it should be scheduled for destruction and really + // destroyed only after processing all pending events. + // + // Notice that this is only possible if we have a running event loop, + // otherwise the object is just deleted directly by ScheduleForDestruction() + // and IsScheduledForDestruction() always returns false. + + // schedule the object for destruction in the near future + void ScheduleForDestruction(wxObject *object); + + // return true if the object is scheduled for destruction + bool IsScheduledForDestruction(wxObject *object) const; + + + // wxEventLoop-related methods + // --------------------------- + + // all these functions are forwarded to the corresponding methods of the + // currently active event loop -- and do nothing if there is none + virtual bool Pending(); + virtual bool Dispatch(); + + virtual int MainLoop(); + virtual void ExitMainLoop(); + + bool Yield(bool onlyIfNeeded = false); + + virtual void WakeUpIdle(); + + // this method is called by the active event loop when there are no events + // to process + // + // by default it generates the idle events and if you override it in your + // derived class you should call the base class version to ensure that idle + // events are still sent out + virtual bool ProcessIdle(); + + // this virtual function is overridden in GUI wxApp to always return true + // as GUI applications always have an event loop -- but console ones may + // have it or not, so it simply returns true if already have an event loop + // running but false otherwise + virtual bool UsesEventLoop() const; - // called by toolkit-specific code to set the app status: active (we have - // focus) or not and also the last window which had focus before we were - // deactivated - virtual void SetActive(bool isActive, wxWindow *lastFocus); -#endif // wxUSE_GUI // debugging support // ----------------- @@ -321,106 +390,351 @@ public: // this function is called when an assert failure occurs, the base class // version does the normal processing (i.e. shows the usual assert failure // dialog box) -#ifdef __WXDEBUG__ - virtual void OnAssert(const wxChar *file, int line, const wxChar *msg); -#endif // __WXDEBUG__ + // + // the arguments are the location of the failed assert (func may be empty + // if the compiler doesn't support C99 __FUNCTION__), the text of the + // assert itself and the user-specified message + virtual void OnAssertFailure(const wxChar *file, + int line, + const wxChar *func, + const wxChar *cond, + const wxChar *msg); + + // old version of the function without func parameter, for compatibility + // only, override OnAssertFailure() in the new code + virtual void OnAssert(const wxChar *file, + int line, + const wxChar *cond, + const wxChar *msg); // check that the wxBuildOptions object (constructed in the application - // itself, usually the one from IMPLEMENT_APP() macro) matches the build + // itself, usually the one from wxIMPLEMENT_APP() macro) matches the build // options of the library and abort if it doesn't - static bool CheckBuildOptions(const wxBuildOptions& buildOptions); - - // deprecated functions, please updae your code to not use them! - // ------------------------------------------------------------- - -#if WXWIN_COMPATIBILITY_2_2 - // used by obsolete wxDebugMsg only - void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; } - bool GetWantDebugOutput() const { return m_wantDebugOutput; } - - // TRUE if the application wants to get debug output - bool m_wantDebugOutput; -#endif // WXWIN_COMPATIBILITY_2_2 + static bool CheckBuildOptions(const char *optionsSignature, + const char *componentName); // implementation only from now on // ------------------------------- // helpers for dynamic wxApp construction static void SetInitializerFunction(wxAppInitializerFunction fn) - { m_appInitFn = fn; } + { ms_appInitFn = fn; } static wxAppInitializerFunction GetInitializerFunction() - { return m_appInitFn; } + { return ms_appInitFn; } - // process all events in the wxPendingEvents list - virtual void ProcessPendingEvents(); + // accessors for ms_appInstance field (external code might wish to modify + // it, this is why we provide a setter here as well, but you should really + // know what you're doing if you call it), wxTheApp is usually used instead + // of GetInstance() + static wxAppConsole *GetInstance() { return ms_appInstance; } + static void SetInstance(wxAppConsole *app) { ms_appInstance = app; } - // access to the command line arguments - int argc; - wxChar **argv; + + // command line arguments (public for backwards compatibility) + int argc; + + // this object is implicitly convertible to either "char**" (traditional + // type of argv parameter of main()) or to "wchar_t **" (for compatibility + // with Unicode build in previous wx versions and because the command line + // can, in pr +#if wxUSE_UNICODE + wxCmdLineArgsArray argv; +#else + char **argv; +#endif protected: + // delete all objects in wxPendingDelete list + // + // called from ProcessPendingEvents() + void DeletePendingObjects(); + + // the function which creates the traits object when GetTraits() needs it + // for the first time + virtual wxAppTraits *CreateTraits(); + // function used for dynamic wxApp creation - static wxAppInitializerFunction m_appInitFn; + static wxAppInitializerFunction ms_appInitFn; + + // the one and only global application object + static wxAppConsole *ms_appInstance; + + // create main loop from AppTraits or return NULL if + // there is no main loop implementation + wxEventLoopBase *CreateMainLoop(); // application info (must be set from the user code) - wxString m_vendorName, // vendor name (ACME Inc) - m_appName, // app name - m_className; // class name + wxString m_vendorName, // vendor name ("acme") + m_vendorDisplayName, // vendor display name (e.g. "ACME Inc") + m_appName, // app name ("myapp") + m_appDisplayName, // app display name ("My Application") + m_className; // class name + + // the class defining the application behaviour, NULL initially and created + // by GetTraits() when first needed + wxAppTraits *m_traits; + + // the main event loop of the application (may be NULL if the loop hasn't + // been started yet or has already terminated) + wxEventLoopBase *m_mainLoop; + + + // pending events management vars: + + // the array of the handlers with pending events which needs to be processed + // inside ProcessPendingEvents() + wxEvtHandlerArray m_handlersWithPendingEvents; + + // helper array used by ProcessPendingEvents() to store the event handlers + // which have pending events but of these events none can be processed right now + // (because of a call to wxEventLoop::YieldFor() which asked to selectively process + // pending events) + wxEvtHandlerArray m_handlersWithPendingDelayedEvents; + +#if wxUSE_THREADS + // this critical section protects both the lists above + wxCriticalSection m_handlersWithPendingEventsLocker; +#endif + + // flag modified by Suspend/ResumeProcessingOfPendingEvents() + bool m_bDoPendingEventProcessing; + + friend class WXDLLIMPEXP_FWD_BASE wxEvtHandler; + + // the application object is a singleton anyhow, there is no sense in + // copying it + wxDECLARE_NO_COPY_CLASS(wxAppConsoleBase); +}; + +#if defined(__UNIX__) && !defined(__WXMSW__) + #include "wx/unix/app.h" +#else + // this has to be a class and not a typedef as we forward declare it + class wxAppConsole : public wxAppConsoleBase { }; +#endif + +// ---------------------------------------------------------------------------- +// wxAppBase: the common part of wxApp implementations for all platforms +// ---------------------------------------------------------------------------- #if wxUSE_GUI - // the main top level window - may be NULL + +class WXDLLIMPEXP_CORE wxAppBase : public wxAppConsole +{ +public: + wxAppBase(); + virtual ~wxAppBase(); + + // the virtual functions which may/must be overridden in the derived class + // ----------------------------------------------------------------------- + + // very first initialization function + // + // Override: very rarely + virtual bool Initialize(int& argc, wxChar **argv); + + // a platform-dependent version of OnInit(): the code here is likely to + // depend on the toolkit. default version does nothing. + // + // Override: rarely. + virtual bool OnInitGui(); + + // called to start program execution - the default version just enters + // the main GUI loop in which events are received and processed until + // the last window is not deleted (if GetExitOnFrameDelete) or + // ExitMainLoop() is called. In console mode programs, the execution + // of the program really starts here + // + // Override: rarely in GUI applications, always in console ones. + virtual int OnRun(); + + // a matching function for OnInit() + virtual int OnExit(); + + // very last clean up function + // + // Override: very rarely + virtual void CleanUp(); + + + // the worker functions - usually not used directly by the user code + // ----------------------------------------------------------------- + + // safer alternatives to Yield(), using wxWindowDisabler + virtual bool SafeYield(wxWindow *win, bool onlyIfNeeded); + virtual bool SafeYieldFor(wxWindow *win, long eventsToProcess); + + // this virtual function is called in the GUI mode when the application + // becomes idle and normally just sends wxIdleEvent to all interested + // parties + // + // it should return true if more idle events are needed, false if not + virtual bool ProcessIdle(); + + // override base class version: GUI apps always use an event loop + virtual bool UsesEventLoop() const { return true; } + + + // top level window functions + // -------------------------- + + // return true if our app has focus + virtual bool IsActive() const { return m_isActive; } + + // set the "main" top level window + void SetTopWindow(wxWindow *win) { m_topWindow = win; } + + // return the "main" top level window (if it hadn't been set previously + // with SetTopWindow(), will return just some top level window and, if + // there are none, will return NULL) + virtual wxWindow *GetTopWindow() const; + + // control the exit behaviour: by default, the program will exit the + // main loop (and so, usually, terminate) when the last top-level + // program window is deleted. Beware that if you disable this behaviour + // (with SetExitOnFrameDelete(false)), you'll have to call + // ExitMainLoop() explicitly from somewhere. + void SetExitOnFrameDelete(bool flag) + { m_exitOnFrameDelete = flag ? Yes : No; } + bool GetExitOnFrameDelete() const + { return m_exitOnFrameDelete == Yes; } + + + // display mode, visual, printing mode, ... + // ------------------------------------------------------------------------ + + // Get display mode that is used use. This is only used in framebuffer + // wxWin ports such as wxDFB. + virtual wxVideoMode GetDisplayMode() const; + // Set display mode to use. This is only used in framebuffer wxWin + // ports such as wxDFB. This method should be called from + // wxApp::OnInitGui + virtual bool SetDisplayMode(const wxVideoMode& WXUNUSED(info)) { return true; } + + // set use of best visual flag (see below) + void SetUseBestVisual( bool flag, bool forceTrueColour = false ) + { m_useBestVisual = flag; m_forceTrueColour = forceTrueColour; } + bool GetUseBestVisual() const { return m_useBestVisual; } + + // set/get printing mode: see wxPRINT_XXX constants. + // + // default behaviour is the normal one for Unix: always use PostScript + // printing. + virtual void SetPrintMode(int WXUNUSED(mode)) { } + int GetPrintMode() const { return wxPRINT_POSTSCRIPT; } + + // Return the layout direction for the current locale or wxLayout_Default + // if it's unknown + virtual wxLayoutDirection GetLayoutDirection() const; + + // Change the theme used by the application, return true on success. + virtual bool SetNativeTheme(const wxString& WXUNUSED(theme)) { return false; } + + + // command line parsing (GUI-specific) + // ------------------------------------------------------------------------ + +#if wxUSE_CMDLINE_PARSER + virtual bool OnCmdLineParsed(wxCmdLineParser& parser); + virtual void OnInitCmdLine(wxCmdLineParser& parser); +#endif + + // miscellaneous other stuff + // ------------------------------------------------------------------------ + + // called by toolkit-specific code to set the app status: active (we have + // focus) or not and also the last window which had focus before we were + // deactivated + virtual void SetActive(bool isActive, wxWindow *lastFocus); + +#if WXWIN_COMPATIBILITY_2_6 + // OBSOLETE: don't use, always returns true + // + // returns true if the program is successfully initialized + wxDEPRECATED( bool Initialized() ); +#endif // WXWIN_COMPATIBILITY_2_6 + +protected: + // override base class method to use GUI traits + virtual wxAppTraits *CreateTraits(); + + + // the main top level window (may be NULL) wxWindow *m_topWindow; - // if TRUE, exit the main loop when the last top level window is deleted - bool m_exitOnFrameDelete; + // if Yes, exit the main loop when the last top level window is deleted, if + // No don't do it and if Later -- only do it once we reach our OnRun() + // + // the explanation for using this strange scheme is given in appcmn.cpp + enum + { + Later = -1, + No, + Yes + } m_exitOnFrameDelete; - // TRUE if the apps whats to use the best visual on systems where + // true if the app wants to use the best visual on systems where // more than one are available (Sun, SGI, XFree86 4.0 ?) bool m_useBestVisual; + // force TrueColour just in case "best" isn't TrueColour + bool m_forceTrueColour; - // does any of our windows has focus? + // does any of our windows have focus? bool m_isActive; -#endif // wxUSE_GUI + + wxDECLARE_NO_COPY_CLASS(wxAppBase); }; +#if WXWIN_COMPATIBILITY_2_6 + inline bool wxAppBase::Initialized() { return true; } +#endif // WXWIN_COMPATIBILITY_2_6 + // ---------------------------------------------------------------------------- // now include the declaration of the real class // ---------------------------------------------------------------------------- -#if wxUSE_GUI - #if defined(__WXMSW__) - #include "wx/msw/app.h" - #elif defined(__WXMOTIF__) - #include "wx/motif/app.h" - #elif defined(__WXMGL__) - #include "wx/mgl/app.h" - #elif defined(__WXGTK__) - #include "wx/gtk/app.h" - #elif defined(__WXX11__) - #include "wx/x11/app.h" - #elif defined(__WXMAC__) - #include "wx/mac/app.h" - #elif defined(__WXPM__) - #include "wx/os2/app.h" - #elif defined(__WXSTUBS__) - #include "wx/stubs/app.h" - #endif +#if defined(__WXMSW__) + #include "wx/msw/app.h" +#elif defined(__WXMOTIF__) + #include "wx/motif/app.h" +#elif defined(__WXDFB__) + #include "wx/dfb/app.h" +#elif defined(__WXGTK20__) + #include "wx/gtk/app.h" +#elif defined(__WXGTK__) + #include "wx/gtk1/app.h" +#elif defined(__WXX11__) + #include "wx/x11/app.h" +#elif defined(__WXMAC__) + #include "wx/osx/app.h" +#elif defined(__WXCOCOA__) + #include "wx/cocoa/app.h" +#elif defined(__WXPM__) + #include "wx/os2/app.h" +#endif + #else // !GUI - // can't use typedef because wxApp forward declared as a class - class WXDLLEXPORT wxApp : public wxAppBase - { - }; + +// wxApp is defined in core and we cannot define another one in wxBase, +// so use the preprocessor to allow using wxApp in console programs too +#define wxApp wxAppConsole + #endif // GUI/!GUI // ---------------------------------------------------------------------------- // the global data // ---------------------------------------------------------------------------- -// the one and only application object - use of wxTheApp in application code -// is discouraged, consider using DECLARE_APP() after which you may call -// wxGetApp() which will return the object of the correct type (i.e. MyApp and -// not wxApp) -WXDLLEXPORT_DATA(extern wxApp*) wxTheApp; +// for compatibility, we define this macro to access the global application +// object of type wxApp +// +// note that instead of using of wxTheApp in application code you should +// consider using wxDECLARE_APP() after which you may call wxGetApp() which will +// return the object of the correct type (i.e. MyApp and not wxApp) +// +// the cast is safe as in GUI build we only use wxApp, not wxAppConsole, and in +// console mode it does nothing at all +#define wxTheApp static_cast(wxApp::GetInstance()) // ---------------------------------------------------------------------------- // global functions @@ -430,63 +744,20 @@ WXDLLEXPORT_DATA(extern wxApp*) wxTheApp; // ------------------------------------------------------ // Force an exit from main loop -extern void WXDLLEXPORT wxExit(); +WXDLLIMPEXP_BASE void wxExit(); -// Yield to other apps/messages -extern bool WXDLLEXPORT wxYield(); +// avoid redeclaring this function here if it had been already declared by +// wx/utils.h, this results in warnings from g++ with -Wredundant-decls +#ifndef wx_YIELD_DECLARED +#define wx_YIELD_DECLARED // Yield to other apps/messages -extern void WXDLLEXPORT wxWakeUpIdle(); - -// Post a message to the given eventhandler which will be processed during the -// next event loop iteration -inline void wxPostEvent(wxEvtHandler *dest, wxEvent& event) -{ - wxCHECK_RET( dest, wxT("need an object to post event to in wxPostEvent") ); - -#if wxUSE_GUI - dest->AddPendingEvent(event); -#else - dest->ProcessEvent(event); -#endif // wxUSE_GUI -} - -// console applications may avoid using DECLARE_APP and IMPLEMENT_APP macros -// and call these functions instead at the program startup and termination -// ------------------------------------------------------------------------- - -#if !wxUSE_GUI - -// initialize the library (may be called as many times as needed, but each -// call to wxInitialize() must be matched by wxUninitialize()) -extern bool WXDLLEXPORT wxInitialize(); +WXDLLIMPEXP_CORE bool wxYield(); -// clean up - the library can't be used any more after the last call to -// wxUninitialize() -extern void WXDLLEXPORT wxUninitialize(); +#endif // wx_YIELD_DECLARED -// create an object of this class on stack to initialize/cleanup thel ibrary -// automatically -class WXDLLEXPORT wxInitializer -{ -public: - // initialize the library - wxInitializer() { m_ok = wxInitialize(); } - - // has the initialization been successful? (explicit test) - bool IsOk() const { return m_ok; } - - // has the initialization been successful? (implicit test) - operator bool() const { return m_ok; } - - // dtor only does clean up if we initialized the library properly - ~wxInitializer() { if ( m_ok ) wxUninitialize(); } - -private: - bool m_ok; -}; - -#endif // !wxUSE_GUI +// Yield to other apps/messages +WXDLLIMPEXP_BASE void wxWakeUpIdle(); // ---------------------------------------------------------------------------- // macros for dynamic creation of the application object @@ -496,90 +767,114 @@ private: // creator function. wxApp can then call this function to create a new app // object. Convoluted, but necessary. -class WXDLLEXPORT wxAppInitializer +class WXDLLIMPEXP_BASE wxAppInitializer { public: wxAppInitializer(wxAppInitializerFunction fn) { wxApp::SetInitializerFunction(fn); } }; -// Here's a macro you can use if your compiler really, really wants main() to -// be in your main program (e.g. hello.cpp). Now IMPLEMENT_APP should add this -// code if required. - -#if !wxUSE_GUI || defined(__WXMOTIF__) || defined(__WXGTK__) || defined(__WXPM__) || defined(__WXMGL__) - #define IMPLEMENT_WXWIN_MAIN \ - extern int wxEntry( int argc, char *argv[] ); \ - int main(int argc, char *argv[]) { return wxEntry(argc, argv); } -#elif defined(__WXMAC__) && defined(__UNIX__) - // wxMac seems to have a specific wxEntry prototype - #define IMPLEMENT_WXWIN_MAIN \ - extern int wxEntry( int argc, char *argv[], bool enterLoop = 1 ); \ - int main(int argc, char *argv[]) { return wxEntry(argc, argv); } -#elif defined(__WXMSW__) && defined(WXUSINGDLL) - // NT defines APIENTRY, 3.x not - #if !defined(WXAPIENTRY) - #define WXAPIENTRY WXFAR wxSTDCALL - #endif - - #include - #include "wx/msw/winundef.h" - - #define IMPLEMENT_WXWIN_MAIN \ - extern "C" int WXAPIENTRY WinMain(HINSTANCE hInstance,\ - HINSTANCE hPrevInstance,\ - LPSTR m_lpCmdLine, int nCmdShow)\ - {\ - return wxEntry((WXHINSTANCE) hInstance,\ - (WXHINSTANCE) hPrevInstance,\ - m_lpCmdLine, nCmdShow);\ +// the code below defines a wxIMPLEMENT_WXWIN_MAIN macro which you can use if +// your compiler really, really wants main() to be in your main program (e.g. +// hello.cpp). Now wxIMPLEMENT_APP should add this code if required. + +// For compilers that support it, prefer to use wmain() as this ensures any +// Unicode strings can be passed as command line parameters and not just those +// representable in the current locale. +#if wxUSE_UNICODE && defined(__VISUALC__) + #define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \ + int wmain(int argc, wchar_t **argv) \ + { \ + wxDISABLE_DEBUG_SUPPORT(); \ + \ + return wxEntry(argc, argv); \ + } +#else // Use standard main() + #define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \ + int main(int argc, char **argv) \ + { \ + wxDISABLE_DEBUG_SUPPORT(); \ + \ + return wxEntry(argc, argv); \ } -#else - #define IMPLEMENT_WXWIN_MAIN #endif +// port-specific header could have defined it already in some special way +#ifndef wxIMPLEMENT_WXWIN_MAIN + #define wxIMPLEMENT_WXWIN_MAIN wxIMPLEMENT_WXWIN_MAIN_CONSOLE +#endif // defined(wxIMPLEMENT_WXWIN_MAIN) + #ifdef __WXUNIVERSAL__ #include "wx/univ/theme.h" - #define IMPLEMENT_WX_THEME_SUPPORT \ - WX_USE_THEME(win32); \ - WX_USE_THEME(gtk); + #ifdef wxUNIV_DEFAULT_THEME + #define wxIMPLEMENT_WX_THEME_SUPPORT \ + WX_USE_THEME(wxUNIV_DEFAULT_THEME); + #else + #define wxIMPLEMENT_WX_THEME_SUPPORT + #endif #else - #define IMPLEMENT_WX_THEME_SUPPORT + #define wxIMPLEMENT_WX_THEME_SUPPORT #endif -// define the build options object for the application which is compared to the -// one used for building the library on the program startup -#define WX_DEFINE_BUILDOPTS() \ - const wxBuildOptions& wxGetBuildOptions() \ - { \ - static wxBuildOptions s_buildOptions; \ - return s_buildOptions; \ - } - // Use this macro if you want to define your own main() or WinMain() function // and call wxEntry() from there. -#define IMPLEMENT_APP_NO_MAIN(appname) \ - WX_DEFINE_BUILDOPTS() \ - wxApp *wxCreateApp() { return new appname; } \ - wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \ - appname& wxGetApp() { return *(appname *)wxTheApp; } - -// Same as IMPLEMENT_APP() normally but doesn't include themes support in +#define wxIMPLEMENT_APP_NO_MAIN(appname) \ + appname& wxGetApp() { return *static_cast(wxApp::GetInstance()); } \ + wxAppConsole *wxCreateApp() \ + { \ + wxAppConsole::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, \ + "your program"); \ + return new appname; \ + } \ + wxAppInitializer \ + wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp) + +// Same as wxIMPLEMENT_APP() normally but doesn't include themes support in // wxUniversal builds -#define IMPLEMENT_APP_NO_THEMES(appname) \ - IMPLEMENT_APP_NO_MAIN(appname) \ - IMPLEMENT_WXWIN_MAIN +#define wxIMPLEMENT_APP_NO_THEMES(appname) \ + wxIMPLEMENT_WXWIN_MAIN \ + wxIMPLEMENT_APP_NO_MAIN(appname) // Use this macro exactly once, the argument is the name of the wxApp-derived // class which is the class of your application. -#define IMPLEMENT_APP(appname) \ - IMPLEMENT_APP_NO_THEMES(appname) \ - IMPLEMENT_WX_THEME_SUPPORT +#define wxIMPLEMENT_APP(appname) \ + wxIMPLEMENT_WX_THEME_SUPPORT \ + wxIMPLEMENT_APP_NO_THEMES(appname) + +// Same as IMPLEMENT_APP(), but for console applications. +#define wxIMPLEMENT_APP_CONSOLE(appname) \ + wxIMPLEMENT_WXWIN_MAIN_CONSOLE \ + wxIMPLEMENT_APP_NO_MAIN(appname) // this macro can be used multiple times and just allows you to use wxGetApp() // function -#define DECLARE_APP(appname) extern appname& wxGetApp(); +#define wxDECLARE_APP(appname) \ + extern appname& wxGetApp() -#endif - // _WX_APP_H_BASE_ + +// declare the stuff defined by wxIMPLEMENT_APP() macro, it's not really needed +// anywhere else but at the very least it suppresses icc warnings about +// defining extern symbols without prior declaration, and it shouldn't do any +// harm +extern wxAppConsole *wxCreateApp(); +extern wxAppInitializer wxTheAppInitializer; + +// ---------------------------------------------------------------------------- +// Compatibility macro aliases +// ---------------------------------------------------------------------------- + +// deprecated variants _not_ requiring a semicolon after them +// (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 IMPLEMENT_WXWIN_MAIN_CONSOLE wxIMPLEMENT_WXWIN_MAIN_CONSOLE +#define IMPLEMENT_WXWIN_MAIN wxIMPLEMENT_WXWIN_MAIN +#define IMPLEMENT_WX_THEME_SUPPORT wxIMPLEMENT_WX_THEME_SUPPORT +#define IMPLEMENT_APP_NO_MAIN(app) wxIMPLEMENT_APP_NO_MAIN(app); +#define IMPLEMENT_APP_NO_THEMES(app) wxIMPLEMENT_APP_NO_THEMES(app); +#define IMPLEMENT_APP(app) wxIMPLEMENT_APP(app); +#define IMPLEMENT_APP_CONSOLE(app) wxIMPLEMENT_APP_CONSOLE(app); +#define DECLARE_APP(app) wxDECLARE_APP(app); + +#endif // _WX_APP_H_BASE_