/////////////////////////////////////////////////////////////////////////////
-// Name: app.h
-// Purpose: wxApp inclusion
+// 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
-// Licence: wxWindows licence
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifndef __APPH_BASE__
-#define __APPH_BASE__
+#ifndef _WX_APP_H_BASE_
+#define _WX_APP_H_BASE_
-/*
-class WXDLLEXPORT wxApp;
-typedef wxApp* (*wxAppInitializerFunction) (void);
-*/
+// ----------------------------------------------------------------------------
+// headers we have to include here
+// ----------------------------------------------------------------------------
-#include "wx/object.h"
+#include "wx/event.h" // for the base class
-typedef wxObject* (*wxAppInitializerFunction) (void); // returning wxApp* won't work with gcc
+#if wxUSE_GUI
+ #include "wx/window.h" // for wxTopLevelWindows
+#endif // wxUSE_GUI
-#if defined(__WINDOWS__)
-#include "wx/msw/app.h"
-#elif defined(__MOTIF__)
-#include "wx/xt/app.h"
-#elif defined(__GTK__)
-#include "wx/gtk/app.h"
-#endif
+#include "wx/build.h"
+#include "wx/init.h" // we must declare wxEntry()
+
+class WXDLLIMPEXP_CORE wxApp;
+class WXDLLIMPEXP_BASE wxAppTraits;
+class WXDLLIMPEXP_BASE wxCmdLineParser;
+class WXDLLIMPEXP_BASE wxLog;
+class WXDLLIMPEXP_BASE wxMessageOutput;
+
+// ----------------------------------------------------------------------------
+// typedefs
+// ----------------------------------------------------------------------------
+// the type of the function used to create a wxApp object on program start up
+typedef wxApp* (*wxAppInitializerFunction)();
-// Having a global instance of this class allows
-// wxApp to be aware of the app creator function.
-// wxApp can then call this function to create a new
-// app object. Convoluted, but necessary.
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxAppInitializer
+enum
+{
+ wxPRINT_WINDOWS = 1,
+ 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 WXDLLIMPEXP_CORE wxDisplayModeInfo
{
public:
- wxAppInitializer(wxAppInitializerFunction fn)
- {
- wxApp::SetInitializerFunction(fn);
- }
+ 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 WXDLLIMPEXP_BASE wxAppConsole : public wxEvtHandler
+{
+public:
+ // ctor and dtor
+ wxAppConsole();
+ virtual ~wxAppConsole();
+
+
+ // the virtual functions which may/must be overridden in the derived class
+ // -----------------------------------------------------------------------
+
+ // 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();
+
+ // this is here only temproary hopefully (FIXME)
+ virtual bool OnInitGui() { return true; }
+
+ // 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() = 0;
+
+ // 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();
+
+ // 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() { }
+
+ // Called from wxExit() function, should terminate the application a.s.a.p.
+ virtual void Exit();
+
+
+ // application info: name, description, vendor
+ // -------------------------------------------
+
+ // NB: all these should be set by the application itself, there are no
+ // reasonable default except for the application name which is taken to
+ // be argv[0]
+
+ // set/get the application name
+ wxString GetAppName() const
+ {
+ return m_appName.empty() ? m_className : m_appName;
+ }
+ void SetAppName(const wxString& name) { m_appName = name; }
+
+ // set/get the app class name
+ wxString GetClassName() const { return m_className; }
+ void SetClassName(const wxString& name) { m_className = name; }
+
+ // set/get the vendor name
+ const wxString& GetVendorName() const { return m_vendorName; }
+ void SetVendorName(const wxString& name) { m_vendorName = name; }
+
+
+ // 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);
-#define IMPLEMENT_APP(appname) \
- wxApp *wxCreateApp(void) { return new appname; } \
- wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
- appname& wxGetApp(void) { return *(appname *)wxTheApp; } \
-\
- extern int wxEntry( int argc, char *argv[] ); \
- int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
+ // 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);
-#define DECLARE_APP(appname) \
- extern appname& wxGetApp(void) ;
+ // 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
+ // -------------------------------------
+
+ // 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 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
+ // --------------------------
+
+ // 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);
+
+ // 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
+ // also called directly.
+ virtual void ProcessPendingEvents();
+
+ // doesn't do anything in this class, just a hook for GUI wxApp
+ virtual bool Yield(bool WXUNUSED(onlyIfNeeded) = false) { return true; }
+
+ // make sure that idle events are sent again
+ virtual void WakeUpIdle() { }
+
+
+ // 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);
+
+
+ // implementation only from now on
+ // -------------------------------
+
+ // helpers for dynamic wxApp construction
+ static void SetInitializerFunction(wxAppInitializerFunction fn)
+ { ms_appInitFn = fn; }
+ static wxAppInitializerFunction GetInitializerFunction()
+ { return ms_appInitFn; }
+
+
+ // command line arguments (public for backwards compatibility)
+ int argc;
+ wxChar **argv;
+
+protected:
+ // 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 ms_appInitFn;
+
+ // application info (must be set from the user code)
+ wxString m_vendorName, // vendor name (ACME Inc)
+ m_appName, // app name
+ m_className; // class name
+
+ // the class defining the application behaviour, NULL initially and created
+ // by GetTraits() when first needed
+ wxAppTraits *m_traits;
+
+
+ // the application object is a singleton anyhow, there is no sense in
+ // copying it
+ DECLARE_NO_COPY_CLASS(wxAppConsole)
+};
+
+// ----------------------------------------------------------------------------
+// wxAppBase: the common part of wxApp implementations for all platforms
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+
+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();
+
+ // very last clean up function
+ //
+ // Override: very rarely
+ virtual void CleanUp();
+
+
+ // the worker functions - usually not used directly by the user code
+ // -----------------------------------------------------------------
+
+ // execute the main GUI loop, the function returns when the loop ends
+ virtual int MainLoop() = 0;
+
+ // 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;
+
+ // returns TRUE if there are unprocessed events in the event queue
+ virtual bool Pending() = 0;
+
+ // 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;
+
+ // 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;
+
+
+ // 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
+ {
+ if (m_topWindow)
+ return m_topWindow;
+ else if (wxTopLevelWindows.GetCount() > 0)
+ return wxTopLevelWindows.GetFirst()->GetData();
+ else
+ return (wxWindow *)NULL;
+ }
+
+ // 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 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.
+ //
+ // default behaviour is the normal one for Unix: always use PostScript
+ // printing.
+ virtual void SetPrintMode(int WXUNUSED(mode)) { }
+ int GetPrintMode() const { return wxPRINT_POSTSCRIPT; }
+
+
+ // 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);
+
+
+protected:
+ // delete all objects in wxPendingDelete list
+ void DeletePendingObjects();
+
+ // override base class method to use GUI traits
+ virtual wxAppTraits *CreateTraits();
+
+
+ // 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;
+
+
+ DECLARE_NO_COPY_CLASS(wxAppBase)
+};
+
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// 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(__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 WXDLLIMPEXP_BASE wxApp : public 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)
+WXDLLIMPEXP_DATA_BASE(extern wxApp*) wxTheApp;
+
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+
+// event loop related functions only work in GUI programs
+// ------------------------------------------------------
+
+// Force an exit from main loop
+extern void WXDLLIMPEXP_BASE wxExit();
+
+// Yield to other apps/messages
+extern bool WXDLLIMPEXP_BASE wxYield();
+
+// Yield to other apps/messages
+extern void WXDLLIMPEXP_BASE wxWakeUpIdle();
+
+// ----------------------------------------------------------------------------
+// macros for dynamic creation of the application object
+// ----------------------------------------------------------------------------
+
+// Having a global instance of this class allows wxApp to be aware of the app
+// creator function. wxApp can then call this function to create a new app
+// object. Convoluted, but necessary.
+
+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(__WXMSW__)
+ #define IMPLEMENT_WXWIN_MAIN \
+ int main(int argc, char **argv) { return wxEntry(argc, argv); }
+#elif defined(__WXMSW__) && defined(WXUSINGDLL)
+ // we need HINSTANCE declaration to define WinMain()
+ #include <windows.h>
+ #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
+
+#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
- // __APPH_BASE__
+
+// 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; }
+
+// 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 // _WX_APP_H_BASE_
+
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