X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/824e935add7ce89702fba506e4aa4609f9775483..78340847c912f28ddd156b7d15a4a26cdd11b9eb:/include/wx/app.h?ds=sidebyside

diff --git a/include/wx/app.h b/include/wx/app.h
index 8d11a5aeb4..d30e19cd8d 100644
--- a/include/wx/app.h
+++ b/include/wx/app.h
@@ -1,71 +1,523 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        app.h
-// Purpose:     wxApp inclusion
+// 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
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifndef __APPH_BASE__
-#define __APPH_BASE__
+#ifndef _WX_APP_H_BASE_
+#define _WX_APP_H_BASE_
 
-#ifndef __GTK__
-class WXDLLEXPORT wxApp;
-typedef wxApp* (*wxAppInitializerFunction) (void);
+#ifdef __GNUG__
+    #pragma interface "appbase.h"
 #endif
 
-#include "wx/object.h"
+// ----------------------------------------------------------------------------
+// typedefs
+// ----------------------------------------------------------------------------
 
-#ifdef __GTK__
-typedef wxObject* (*wxAppInitializerFunction) (void);  // returning wxApp* won't work with gcc
+#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
 
-#if defined(__WINDOWS__)
-#include "wx/msw/app.h"
-#elif defined(__MOTIF__)
-#include "wx/xt/app.h"
-#elif defined(__GTK__)
-#include "wx/gtk/app.h"
+class WXDLLEXPORT wxCmdLineParser;
+
+// ----------------------------------------------------------------------------
+// headers we have to include here
+// ----------------------------------------------------------------------------
+
+#include "wx/event.h"       // for the base class
+
+#if wxUSE_GUI
+    #include "wx/window.h"  // for wxTopLevelWindows
+#endif // wxUSE_GUI
+
+#if wxUSE_LOG
+    #include "wx/log.h"
+#endif
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+static const int wxPRINT_WINDOWS = 1;
+static const int wxPRINT_POSTSCRIPT = 2;
+
+// ----------------------------------------------------------------------------
+// the common part of wxApp implementations for all platforms
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxAppBase : public wxEvtHandler
+{
+public:
+    wxAppBase();
+
+    // 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.
+    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
+
+        // 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
+
+        // 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.
+    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.
+    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;
+
+        // 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
+    // -------------------------------------------
+
+    // 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
+    {
+        if ( !m_appName )
+            return m_className;
+        else
+            return 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; }
+
+#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
+    {
+        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 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
+    // ----------------------
+
+    // 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
+    // -------------------------------------
+
+#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
+
+#if wxUSE_GUI
+        // 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;
+
+        // VZ: what does this do exactly?
+    void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; }
+    bool GetWantDebugOutput() const { return m_wantDebugOutput; }
+
+        // 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; }
+
+    // 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
+    // -----------------
+
+    // 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__
+
+    // implementation only from now on
+    // -------------------------------
+
+    // helpers for dynamic wxApp construction
+    static void SetInitializerFunction(wxAppInitializerFunction fn)
+        { m_appInitFn = fn; }
+    static wxAppInitializerFunction GetInitializerFunction()
+        { return m_appInitFn; }
+
+    // needed to avoid link errors
+#ifdef __DARWIN__
+    virtual ~wxAppBase() { }
 #endif
 
+    // process all events in the wxPendingEvents list
+    virtual void ProcessPendingEvents();
+
+    // access to the command line arguments
+    int      argc;
+    wxChar **argv;
+
+protected:
+    // function used for dynamic wxApp creation
+    static wxAppInitializerFunction m_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
+
+    // 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 TRUE, exit the main loop when the last top level window is deleted
+    bool 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;
 
-// 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.
+    // does any of our windows has focus?
+    bool m_isActive;
+#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(__WXMAC__)
+        #include "wx/mac/app.h"
+    #elif defined(__WXPM__)
+        #include "wx/os2/app.h"
+    #elif defined(__WXSTUBS__)
+        #include "wx/stubs/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
+// ----------------------------------------------------------------------------
+
+// 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;
+
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+
+// event loop related functions only work in GUI programs
+// ------------------------------------------------------
+
+// Force an exit from main loop
+extern void WXDLLEXPORT wxExit();
+
+// Yield to other apps/messages
+extern bool WXDLLEXPORT wxYield();
+
+// 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();
+
+// 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
+// ----------------------------------------------------------------------------
+
+// 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 WXDLLEXPORT wxAppInitializer
 {
 public:
-	wxAppInitializer(wxAppInitializerFunction fn)
-	{
-		wxApp::SetInitializerFunction(fn);
-	}
+    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.
+// 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
 
-#if defined(AIX) || defined(AIX4) /* || defined(____HPUX__) */
-#define IMPLEMENT_WXWIN_MAIN int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
+    #include <windows.h>
+    #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);\
+        }
+#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_WXWIN_MAIN
+    #define IMPLEMENT_WX_THEME_SUPPORT
 #endif
 
-#define IMPLEMENT_APP(appname)                          \
-        wxApp *wxCreateApp(void) { return new appname; }      \
-		wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
-        appname& wxGetApp(void) { return *(appname *)wxTheApp; } \
-        IMPLEMENT_WXWIN_MAIN
+// 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() { 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
 
-#define DECLARE_APP(appname) \
-	extern appname& wxGetApp(void) ;
+// 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
-    // __APPH_BASE__
+    // _WX_APP_H_BASE_