X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c1b03ce80281bb14da2cb8460444e6ccab9f4369..1338c59a025505bc066be220fe56e898a72b3ad3:/include/wx/app.h diff --git a/include/wx/app.h b/include/wx/app.h index 85e28145a8..ac59394d3a 100644 --- a/include/wx/app.h +++ b/include/wx/app.h @@ -1,47 +1,49 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: app.h +// Name: wx/app.h // Purpose: wxAppBase class and macros used for declaration of wxApp // derived class in the user code // Author: Julian Smart // 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__ +#if defined(__GNUG__) && !defined(__APPLE__) #pragma interface "appbase.h" #endif // ---------------------------------------------------------------------------- -// typedefs +// headers we have to include here // ---------------------------------------------------------------------------- -#ifdef __WXMSW__ - class WXDLLEXPORT wxApp; - typedef wxApp* (*wxAppInitializerFunction)(); -#else - // returning wxApp* won't work with gcc - #include "wx/object.h" +#include "wx/event.h" // for the base class + +#if wxUSE_GUI + #include "wx/window.h" // for wxTopLevelWindows +#endif // wxUSE_GUI - typedef wxObject* (*wxAppInitializerFunction)(); +#if WXWIN_COMPATIBILITY_2_2 + #include "wx/icon.h" #endif -// ---------------------------------------------------------------------------- -// headers we have to include here -// ---------------------------------------------------------------------------- +#include "wx/build.h" -#include "wx/event.h" // for the base class +class WXDLLEXPORT wxApp; +class WXDLLEXPORT wxCmdLineParser; +class WXDLLEXPORT wxLog; +class WXDLLEXPORT wxMessageOutput; -#include "wx/window.h" // for wxTopLevelWindows +// ---------------------------------------------------------------------------- +// typedefs +// ---------------------------------------------------------------------------- -#if wxUSE_LOG - #include "wx/log.h" -#endif +// the type of the function used to create a wxApp object on program start up +typedef wxApp* (*wxAppInitializerFunction)(); // ---------------------------------------------------------------------------- // constants @@ -50,13 +52,44 @@ static const int wxPRINT_WINDOWS = 1; static const int 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 + // ---------------------------------------------------------------------------- // the common part of wxApp implementations for all platforms // ---------------------------------------------------------------------------- class WXDLLEXPORT wxAppBase : public wxEvtHandler { + DECLARE_NO_COPY_CLASS(wxAppBase) + public: + wxAppBase(); + virtual ~wxAppBase(); + // the virtual functions which may/must be overridden in the derived class // ----------------------------------------------------------------------- @@ -64,22 +97,29 @@ public: // prevents the program from continuing - it's a good place to create // the top level program window and return TRUE. // - // Override: always. - virtual bool OnInit() { return FALSE; }; + // Override: always in GUI application, rarely in console ones. + 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() { return TRUE; } + virtual bool OnInitGui(); +#endif // wxUSE_GUI // 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. + // ExitMainLoop() is called. In console mode programs, the execution + // of the program really starts here // - // Override: rarely. - virtual int OnRun() { return MainLoop(); }; + // Override: rarely in GUI applications, always in console ones. +#if wxUSE_GUI + virtual int OnRun(); +#else // !GUI + virtual int OnRun() = 0; +#endif // wxUSE_GUI // 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 @@ -87,7 +127,7 @@ public: // value of this method. // // Override: often. - virtual int OnExit() { return 0; } + 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 @@ -102,6 +142,7 @@ public: // 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; @@ -119,6 +160,25 @@ public: // 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; + + // 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; +#endif // wxUSE_GUI + // application info: name, description, vendor // ------------------------------------------- @@ -144,16 +204,20 @@ 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) - wxWindow *GetTopWindow() const + virtual wxWindow *GetTopWindow() const { if (m_topWindow) return m_topWindow; @@ -165,11 +229,43 @@ public: // 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; } + // 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; } + +#endif // wxUSE_GUI + + // cmd line parsing stuff + // ---------------------- + + // all of these methods may be overridden in the derived class to + // customize the command line parsing (by default only a few standard + // options are handled) + // + // you also need to call wxApp::OnInit() from YourApp::OnInit() for all + // this to work + +#if wxUSE_CMDLINE_PARSER + // this one is called from OnInit() to add all supported options + // to the given parser + virtual void OnInitCmdLine(wxCmdLineParser& parser); + + // called after successfully parsing the command line, return TRUE + // to continue and FALSE to exit + virtual bool OnCmdLineParsed(wxCmdLineParser& parser); + + // 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 + virtual bool OnCmdLineError(wxCmdLineParser& parser); +#endif // wxUSE_CMDLINE_PARSER // miscellaneous customization functions // ------------------------------------- @@ -179,18 +275,32 @@ public: // user-defined class (default implementation creates a wxLogGui // object) - this log object is used by default by all wxLogXXX() // functions. - virtual wxLog *CreateLogTarget() { return new wxLogGui; } + virtual wxLog *CreateLogTarget(); #endif // wxUSE_LOG + // similar to CreateLogTarget() but for the global wxMessageOutput + // object + virtual wxMessageOutput *CreateMessageOutput(); + +#if wxUSE_GUI +#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 which) const = 0; + virtual wxIcon GetStdIcon(int WXUNUSED(which)) const { return wxNullIcon; } +#endif - // VZ: what does this do exactly? - void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; } - bool GetWantDebugOutput() const { return m_wantDebugOutput; } + // 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; } + + // set use of best visual flag (see below) + void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; } + bool GetUseBestVisual() const { return m_useBestVisual; } // set/get printing mode: see wxPRINT_XXX constants. // @@ -199,6 +309,54 @@ public: virtual void SetPrintMode(int WXUNUSED(mode)) { } int GetPrintMode() const { return wxPRINT_POSTSCRIPT; } + // 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 + + // this method allows to filter all the events processed by the program, so + // you should try to return quickly from it to avoid slowing down the + // program to the crawl + // + // return value should be -1 to continue with the normal event processing, + // or TRUE or FALSE to stop further processing and pretend that the event + // had been already processed or won't be processed at all, respectively + virtual int FilterEvent(wxEvent& event); + + // debugging support + // ----------------- + + // 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 + // assert itself and the user-specified message +#ifdef __WXDEBUG__ + virtual void OnAssert(const wxChar *file, + int line, + const wxChar *cond, + const wxChar *msg); +#endif // __WXDEBUG__ + + // 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); + + // 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 + // implementation only from now on // ------------------------------- @@ -208,11 +366,13 @@ public: static wxAppInitializerFunction GetInitializerFunction() { return m_appInitFn; } + // process all events in the wxPendingEvents list + virtual void ProcessPendingEvents(); + // access to the command line arguments int argc; wxChar **argv; -//private: protected: // function used for dynamic wxApp creation static wxAppInitializerFunction m_appInitFn; @@ -222,33 +382,58 @@ protected: m_appName, // app name m_className; // class name - // if TRUE, exit the main loop when the last top level window is deleted - bool m_exitOnFrameDelete; - - // TRUE if the application wants to get debug output - bool m_wantDebugOutput; - +#if wxUSE_GUI // the main top level window - may be NULL wxWindow *m_topWindow; + + // 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 + // more than one are available (Sun, SGI, XFree86 4.0 ?) + bool m_useBestVisual; + + // does any of our windows has focus? + bool m_isActive; +#endif // wxUSE_GUI }; // ---------------------------------------------------------------------------- // now include the declaration of the real class // ---------------------------------------------------------------------------- -#if defined(__WXMSW__) - #include "wx/msw/app.h" -#elif defined(__WXMOTIF__) - #include "wx/motif/app.h" -#elif defined(__WXQT__) - #include "wx/qt/app.h" -#elif defined(__WXGTK__) - #include "wx/gtk/app.h" -#elif defined(__WXMAC__) - #include "wx/mac/app.h" -#elif defined(__WXSTUBS__) - #include "wx/stubs/app.h" -#endif +#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(__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 + { + }; +#endif // GUI/!GUI // ---------------------------------------------------------------------------- // the global data @@ -264,11 +449,67 @@ WXDLLEXPORT_DATA(extern wxApp*) wxTheApp; // global functions // ---------------------------------------------------------------------------- +// event loop related functions only work in GUI programs +// ------------------------------------------------------ + // Force an exit from main loop -void WXDLLEXPORT wxExit(); +extern void WXDLLEXPORT wxExit(); + +// Yield to other apps/messages +extern bool WXDLLEXPORT wxYield(); // Yield to other apps/messages -bool WXDLLEXPORT wxYield(); +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(); + +// clean up - the library can't be used any more after the last call to +// wxUninitialize() +extern void WXDLLEXPORT wxUninitialize(); + +// 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 // ---------------------------------------------------------------------------- // macros for dynamic creation of the application object @@ -289,41 +530,72 @@ public: // be in your main program (e.g. hello.cpp). Now IMPLEMENT_APP should add this // code if required. -#if defined(__AIX__) || defined(__HPUX__) +#if !wxUSE_GUI || defined(__WXMOTIF__) || defined(__WXGTK__) || defined(__WXPM__) || defined(__WXMGL__) || defined(__WXCOCOA__) #define IMPLEMENT_WXWIN_MAIN \ - extern int wxEntry( int argc, char *argv[] ); \ - int main(int argc, char *argv[]) { return wxEntry(argc, argv); } + extern int wxEntry( int argc, char **argv ); \ + int main(int argc, char **argv) { return wxEntry(argc, argv); } +#elif defined(__WXMAC__) + // wxMac seems to have a specific wxEntry prototype + #define IMPLEMENT_WXWIN_MAIN \ + extern int wxEntry( int argc, char **argv, bool enterLoop = TRUE ); \ + int main(int argc, char **argv) { return wxEntry(argc, argv); } #elif defined(__WXMSW__) && defined(WXUSINGDLL) // NT defines APIENTRY, 3.x not #if !defined(WXAPIENTRY) - #ifdef __WATCOMC__ - #define WXAPIENTRY PASCAL - #else - #define WXAPIENTRY FAR PASCAL - #endif + #define WXAPIENTRY WXFAR wxSTDCALL #endif + #include + #include "wx/msw/winundef.h" + #define IMPLEMENT_WXWIN_MAIN \ - int WXAPIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,\ - LPSTR m_lpCmdLine, int nCmdShow )\ + extern "C" int WXAPIENTRY WinMain(HINSTANCE hInstance,\ + HINSTANCE hPrevInstance,\ + LPSTR m_lpCmdLine, int nCmdShow)\ {\ - return wxEntry((WXHINSTANCE) hInstance, \ + return wxEntry((WXHINSTANCE) hInstance,\ (WXHINSTANCE) hPrevInstance,\ m_lpCmdLine, nCmdShow);\ } - #else #define IMPLEMENT_WXWIN_MAIN #endif -// 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) \ - wxApp *wxCreateApp() { return new appname; } \ +#ifdef __WXUNIVERSAL__ + #include "wx/univ/theme.h" + + #define IMPLEMENT_WX_THEME_SUPPORT \ + WX_USE_THEME(win32); \ + WX_USE_THEME(gtk); +#else + #define IMPLEMENT_WX_THEME_SUPPORT +#endif + +// 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() \ + { \ + wxApp::CheckBuildOptions(wxBuildOptions()); \ + return new appname; \ + } \ wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \ - appname& wxGetApp() { return *(appname *)wxTheApp; } \ + appname& wxGetApp() { return *(appname *)wxTheApp; } + +// Same as IMPLEMENT_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 +// 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 + +// this macro can be used multiple times and just allows you to use wxGetApp() +// function #define DECLARE_APP(appname) extern appname& wxGetApp(); #endif