X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/13bdd545fb305e02f9ff4ac8048fb0e4e8f2efd5..ba5787676d002f76b4c3944cb598b626f10f058d:/include/wx/app.h?ds=sidebyside diff --git a/include/wx/app.h b/include/wx/app.h index 64bf26e029..07a9758ad3 100644 --- a/include/wx/app.h +++ b/include/wx/app.h @@ -18,26 +18,27 @@ // ---------------------------------------------------------------------------- #include "wx/event.h" // for the base class - -#if wxUSE_GUI - #include "wx/window.h" // for wxTopLevelWindows -#endif // wxUSE_GUI - #include "wx/build.h" #include "wx/init.h" // we must declare wxEntry() +#include "wx/intl.h" // for wxLayoutDirection -class WXDLLEXPORT wxApp; -class WXDLLEXPORT wxAppTraits; -class WXDLLEXPORT wxCmdLineParser; -class WXDLLEXPORT wxLog; -class WXDLLEXPORT wxMessageOutput; +class WXDLLIMPEXP_BASE wxAppConsole; +class WXDLLIMPEXP_BASE wxAppTraits; +class WXDLLIMPEXP_BASE wxCmdLineParser; +class WXDLLIMPEXP_BASE wxLog; +class WXDLLIMPEXP_BASE wxMessageOutput; + +#if wxUSE_GUI + class WXDLLEXPORT wxEventLoop; + struct WXDLLIMPEXP_CORE wxVideoMode; +#endif // ---------------------------------------------------------------------------- // typedefs // ---------------------------------------------------------------------------- // the type of the function used to create a wxApp object on program start up -typedef wxApp* (*wxAppInitializerFunction)(); +typedef wxAppConsole* (*wxAppInitializerFunction)(); // ---------------------------------------------------------------------------- // constants @@ -49,37 +50,11 @@ enum wxPRINT_POSTSCRIPT = 2 }; -// ---------------------------------------------------------------------------- -// support for framebuffer ports -// ---------------------------------------------------------------------------- - -#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 -{ -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; -}; -#endif // wxUSE_GUI - // ---------------------------------------------------------------------------- // wxAppConsole: wxApp for non-GUI applications // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxAppConsole : public wxEvtHandler +class WXDLLIMPEXP_BASE wxAppConsole : public wxEvtHandler { public: // ctor and dtor @@ -97,13 +72,16 @@ public: // 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(); - // this is here only temproary hopefully (FIXME) + // this is here only temporary hopefully (FIXME) virtual bool OnInitGui() { return true; } // This is the replacement for the normal main(): all program work should @@ -166,19 +144,21 @@ 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 @@ -193,23 +173,6 @@ public: // allows us to abstract the differences behind the common façade wxAppTraits *GetTraits(); - // the functions below shouldn't be used now that we have wxAppTraits -#if WXWIN_COMPATIBILITY_2_4 - -#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(); -#endif // wxUSE_LOG - - // similar to CreateLogTarget() but for the global wxMessageOutput - // object - virtual wxMessageOutput *CreateMessageOutput(); - -#endif // WXWIN_COMPATIBILITY_2_4 - // event processing functions // -------------------------- @@ -223,6 +186,23 @@ public: // had been already processed or won't be processed at all, respectively virtual int FilterEvent(wxEvent& event); +#if wxUSE_EXCEPTIONS + // 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 exception type is lost by now, so if you really want to handle the + // exception you should override OnRun() and put a try/catch around + // MainLoop() call there or use OnExceptionInMainLoop() + virtual void OnUnhandledException() { } +#endif // wxUSE_EXCEPTIONS + // process all events in the wxPendingEvents 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 @@ -235,17 +215,30 @@ public: // make sure that idle events are sent again virtual void WakeUpIdle() { } + // this is just a convenience: by providing its implementation here we + // avoid #ifdefs in the code using it + static bool IsMainLoopRunning() { return false; } + // debugging support // ----------------- +#ifdef __WXDEBUG__ // 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) // - // the arguments are the place where the assert occured, the text of the + // 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 -#ifdef __WXDEBUG__ + 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, @@ -255,8 +248,8 @@ public: // check that the wxBuildOptions object (constructed in the application // itself, usually the one from IMPLEMENT_APP() macro) matches the build // options of the library and abort if it doesn't - static bool CheckBuildOptions(const wxBuildOptions& buildOptions); - + static bool CheckBuildOptions(const char *optionsSignature, + const char *componentName); // implementation only from now on // ------------------------------- @@ -267,6 +260,13 @@ public: static wxAppInitializerFunction GetInitializerFunction() { return ms_appInitFn; } + // 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; } + // command line arguments (public for backwards compatibility) int argc; @@ -281,6 +281,10 @@ protected: // function used for dynamic wxApp creation static wxAppInitializerFunction ms_appInitFn; + // the one and only global application object + static wxAppConsole *ms_appInstance; + + // application info (must be set from the user code) wxString m_vendorName, // vendor name (ACME Inc) m_appName, // app name @@ -302,7 +306,7 @@ protected: #if wxUSE_GUI -class WXDLLEXPORT wxAppBase : public wxAppConsole +class WXDLLIMPEXP_CORE wxAppBase : public wxAppConsole { public: wxAppBase(); @@ -331,6 +335,9 @@ public: // 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 @@ -340,49 +347,69 @@ public: // the worker functions - usually not used directly by the user code // ----------------------------------------------------------------- + // return true if we're running main loop, i.e. if the events can + // (already) be dispatched + static bool IsMainLoopRunning() + { + wxAppBase *app = wx_static_cast(wxAppBase *, GetInstance()); + return app && app->m_mainLoop != NULL; + } + // execute the main GUI loop, the function returns when the loop ends - virtual int MainLoop() = 0; + virtual int MainLoop(); // exit the main loop thus terminating the application virtual void Exit(); // 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; + virtual void ExitMainLoop(); - // returns TRUE if there are unprocessed events in the event queue - virtual bool Pending() = 0; + // returns true if there are unprocessed events in the event queue + virtual bool Pending(); // process the first event in the event queue (blocks until an event - // apperas if there are none currently) - virtual void Dispatch() = 0; + // appears if there are none currently, use Pending() if this is not + // wanted), returns false if the event loop should stop and true + // otherwise + virtual bool Dispatch(); // process all currently pending events right now // // it is an error to call Yield() recursively unless the value of - // onlyIfNeeded is TRUE + // 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; + virtual bool Yield(bool onlyIfNeeded = false) = 0; // 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() = 0; + // it should return true if more idle events are needed, false if not + virtual bool ProcessIdle(); + + // Send idle event to window and all subwindows + // Returns true if more idle time is requested. + virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event); + + +#if wxUSE_EXCEPTIONS + // 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 // top level window functions // -------------------------- - // return TRUE if our app has focus + // return true if our app has focus virtual bool IsActive() const { return m_isActive; } // set the "main" top level window @@ -391,20 +418,12 @@ public: // 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 - { - if (m_topWindow) - return m_topWindow; - else if (wxTopLevelWindows.GetCount() > 0) - return wxTopLevelWindows.GetFirst()->GetData(); - else - return (wxWindow *)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 + // (with SetExitOnFrameDelete(false)), you'll have to call // ExitMainLoop() explicitly from somewhere. void SetExitOnFrameDelete(bool flag) { m_exitOnFrameDelete = flag ? Yes : No; } @@ -416,15 +435,16 @@ public: // ------------------------------------------------------------------------ // Get display mode that is used use. This is only used in framebuffer - // wxWin ports (such as wxMGL). - virtual wxDisplayModeInfo GetDisplayMode() const { return wxDisplayModeInfo(); } + // wxWin ports (such as wxMGL or wxDFB). + virtual wxVideoMode GetDisplayMode() const; // Set display mode to use. This is only used in framebuffer wxWin - // ports (such as wxMGL). This method should be called from + // ports (such as wxMGL or wxDFB). This method should be called from // wxApp::OnInitGui - virtual bool SetDisplayMode(const wxDisplayModeInfo& WXUNUSED(info)) { return TRUE; } + virtual bool SetDisplayMode(const wxVideoMode& WXUNUSED(info)) { return true; } // set use of best visual flag (see below) - void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; } + 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. @@ -434,6 +454,18 @@ public: 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; + + + // command line parsing (GUI-specific) + // ------------------------------------------------------------------------ + +#if wxUSE_CMDLINE_PARSER + virtual bool OnCmdLineParsed(wxCmdLineParser& parser); + virtual void OnInitCmdLine(wxCmdLineParser& parser); +#endif // miscellaneous other stuff // ------------------------------------------------------------------------ @@ -443,6 +475,16 @@ public: // 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 + + // perform standard OnIdle behaviour, ensure that this is always called + void OnIdle(wxIdleEvent& event); + protected: // delete all objects in wxPendingDelete list @@ -452,6 +494,10 @@ protected: virtual wxAppTraits *CreateTraits(); + // the main event loop of the application (may be NULL if the loop hasn't + // been started yet or has already terminated) + wxEventLoop *m_mainLoop; + // the main top level window (may be NULL) wxWindow *m_topWindow; @@ -466,17 +512,23 @@ protected: 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; DECLARE_NO_COPY_CLASS(wxAppBase) }; +#if WXWIN_COMPATIBILITY_2_6 + inline bool wxAppBase::Initialized() { return true; } +#endif // WXWIN_COMPATIBILITY_2_6 + #endif // wxUSE_GUI // ---------------------------------------------------------------------------- @@ -484,14 +536,20 @@ protected: // ---------------------------------------------------------------------------- #if wxUSE_GUI - #if defined(__WXMSW__) + #if defined(__WXPALMOS__) + #include "wx/palmos/app.h" + #elif 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__) + #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__) @@ -502,21 +560,24 @@ protected: #include "wx/os2/app.h" #endif #else // !GUI - // can't use typedef because wxApp forward declared as a class - class WXDLLEXPORT wxApp : public wxAppConsole - { - }; + // allow using just wxApp (instead of wxAppConsole) in console programs + typedef wxAppConsole wxApp; #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 DECLARE_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 wx_static_cast(wxApp*, wxApp::GetInstance()) // ---------------------------------------------------------------------------- // global functions @@ -526,13 +587,13 @@ WXDLLEXPORT_DATA(extern wxApp*) wxTheApp; // ------------------------------------------------------ // Force an exit from main loop -extern void WXDLLEXPORT wxExit(); +extern void WXDLLIMPEXP_BASE wxExit(); // Yield to other apps/messages -extern bool WXDLLEXPORT wxYield(); +extern bool WXDLLIMPEXP_BASE wxYield(); // Yield to other apps/messages -extern void WXDLLEXPORT wxWakeUpIdle(); +extern void WXDLLIMPEXP_BASE wxWakeUpIdle(); // ---------------------------------------------------------------------------- // macros for dynamic creation of the application object @@ -542,47 +603,34 @@ extern void WXDLLEXPORT wxWakeUpIdle(); // 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. +// the code below defines a IMPLEMENT_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 IMPLEMENT_APP should add this code if required. -#if !wxUSE_GUI || !defined(__WXMSW__) - #define IMPLEMENT_WXWIN_MAIN \ +#define IMPLEMENT_WXWIN_MAIN_CONSOLE \ int main(int argc, char **argv) { return wxEntry(argc, argv); } -#elif defined(__WXMSW__) && defined(WXUSINGDLL) - // we need HINSTANCE declaration to define WinMain() - #include - #include "wx/msw/winundef.h" - - #define IMPLEMENT_WXWIN_MAIN \ - extern int wxEntry(HINSTANCE hInstance, \ - HINSTANCE hPrevInstance = NULL, \ - char *pCmdLine = NULL, \ - int nCmdShow = SW_NORMAL); \ - extern "C" int WINAPI WinMain(HINSTANCE hInstance, \ - HINSTANCE hPrevInstance, \ - char *lpCmdLine, \ - int nCmdShow) \ - { \ - return wxEntry(hInstance, hPrevInstance, lpCmdLine, nCmdShow); \ - } -#else - #define IMPLEMENT_WXWIN_MAIN -#endif + +// port-specific header could have defined it already in some special way +#ifndef IMPLEMENT_WXWIN_MAIN + #define IMPLEMENT_WXWIN_MAIN IMPLEMENT_WXWIN_MAIN_CONSOLE +#endif // defined(IMPLEMENT_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 IMPLEMENT_WX_THEME_SUPPORT \ + WX_USE_THEME(wxUNIV_DEFAULT_THEME); + #else + #define IMPLEMENT_WX_THEME_SUPPORT + #endif #else #define IMPLEMENT_WX_THEME_SUPPORT #endif @@ -590,14 +638,16 @@ public: // 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) \ - wxApp *wxCreateApp() \ + wxAppConsole *wxCreateApp() \ { \ - wxApp::CheckBuildOptions(wxBuildOptions()); \ + wxAppConsole::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, \ + "your program"); \ return new appname; \ } \ wxAppInitializer \ wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \ - appname& wxGetApp() { return *(appname *)wxTheApp; } + DECLARE_APP(appname) \ + appname& wxGetApp() { return *wx_static_cast(appname*, wxApp::GetInstance()); } // Same as IMPLEMENT_APP() normally but doesn't include themes support in // wxUniversal builds @@ -611,9 +661,21 @@ public: IMPLEMENT_APP_NO_THEMES(appname) \ IMPLEMENT_WX_THEME_SUPPORT +// Same as IMPLEMENT_APP(), but for console applications. +#define IMPLEMENT_APP_CONSOLE(appname) \ + IMPLEMENT_APP_NO_MAIN(appname) \ + IMPLEMENT_WXWIN_MAIN_CONSOLE + // this macro can be used multiple times and just allows you to use wxGetApp() // function #define DECLARE_APP(appname) extern appname& wxGetApp(); -#endif // _WX_APP_H_BASE_ +// declare the stuff defined by IMPLEMENT_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; + +#endif // _WX_APP_H_BASE_