app.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

            // to see this message just use fprintf() here
#if 0
            wxLogDebug( wxT("wxMac library installation name is '%s'"),
                        theLibPath );
#endif

            // allocate copy to replace .dylib.* extension with .rsrc
            if (theLibPath != NULL) {
#if wxUSE_UNICODE
                theResPath = wxString(theLibPath, wxConvLocal);
#else
                theResPath = wxString(theLibPath);
#endif
                // replace '_core' with '' in case of multi-lib build
                theResPath.Replace(wxT("_core"), wxEmptyString);
                // replace ".dylib" shared library extension with ".rsrc"
                theResPath.Replace(wxT(".dylib"), wxT(".rsrc"));
                // Find the begining of the filename
                theName = theResPath.AfterLast('/');

#if 0
                wxLogDebug( wxT("wxMac resources file name is '%s'"),
                            theResPath.mb_str() );
#endif

                theErr = FSPathMakeRef((UInt8 *) theResPath.mb_str(), &theResRef, false);
                if (theErr != noErr) {
                    // try in current directory (using name only)
                    theErr = FSPathMakeRef((UInt8 *) theName.mb_str(), &theResRef, false);
                }

                // open the resource file
                if (theErr == noErr) {
                    theErr = FSOpenResourceFile( &theResRef, 0, NULL, fsRdPerm,
                                                 &gSharedLibraryResource);
                }
                if (theErr != noErr) {
#ifdef __WXDEBUG__
                    wxLogDebug( wxT("unable to open wxMac resource file '%s'\n"),
                                theResPath.mb_str() );
#endif // __WXDEBUG__
                }

            }
        }
#endif /* __DARWIN__ */
    }
#endif /* WXMAKINGDLL_CORE */
}

void wxStAppResource::CloseSharedLibraryResource()
{
#ifdef WXMAKINGDLL_CORE
    // Close the shared library resource file
    if (gSharedLibraryResource != kResFileNotOpened) {
#ifdef __DARWIN__
        if (gSharedLibraryBundle != NULL) {
            CFBundleCloseBundleResourceMap(gSharedLibraryBundle,
                                           gSharedLibraryResource);
            gSharedLibraryBundle = NULL;
        }
        else
#endif /* __DARWIN__ */
        {
            CloseResFile(gSharedLibraryResource);
        }
        gSharedLibraryResource = kResFileNotOpened;
    }
#endif /* WXMAKINGDLL_CORE */
}

#if defined(WXMAKINGDLL_CORE) && !defined(__DARWIN__)

// for shared libraries we have to manually get the correct resource
// ref num upon initializing and releasing when terminating, therefore
// the __wxinitialize and __wxterminate must be used

extern "C" {
    void __sinit(void);    /*    (generated by linker)    */
    pascal OSErr __initialize(const CFragInitBlock *theInitBlock);
    pascal void __terminate(void);
}

pascal OSErr __wxinitialize(const CFragInitBlock *theInitBlock)
{
    wxStAppResource::OpenSharedLibraryResource( theInitBlock ) ;
    return __initialize( theInitBlock ) ;
}

pascal void __wxterminate(void)
{
    wxStAppResource::CloseSharedLibraryResource() ;
    __terminate() ;
}

#endif /* WXMAKINGDLL_CORE && !__DARWIN__ */

#if TARGET_CARBON

bool wxMacConvertEventToRecord( EventRef event , EventRecord *rec)
{
    bool converted = ConvertEventRefToEventRecord( event,rec) ;
    OSStatus err = noErr ;
    if ( !converted )
    {
        switch( GetEventClass( event ) )
        {
            case kEventClassKeyboard :
            {
                converted = true ;
                switch( GetEventKind(event) )
                {
                    case kEventRawKeyDown :
                        rec->what = keyDown ;
                        break ;
                    case kEventRawKeyRepeat :
                        rec->what = autoKey ;
                        break ;
                    case kEventRawKeyUp :
                        rec->what = keyUp ;
                        break ;
                    case kEventRawKeyModifiersChanged :
                        rec->what = nullEvent ;
                        break ;
                    default :
                        converted = false ;
                        break ;
                }
                if ( converted )
                {
                    UInt32 keyCode ;
                    unsigned char charCode ;
                    UInt32 modifiers ;
                    GetMouse( &rec->where) ;

                    err = GetEventParameter(event, kEventParamKeyModifiers, typeUInt32, NULL, 4, NULL, &modifiers);
                    err = GetEventParameter(event, kEventParamKeyCode, typeUInt32, NULL, 4, NULL, &keyCode);
                    err = GetEventParameter(event, kEventParamKeyMacCharCodes, typeChar, NULL, 1, NULL, &charCode);
                    rec->modifiers = modifiers ;
                    rec->message = (keyCode << 8 ) + charCode ;
                }
            }
            break ;
            case kEventClassTextInput :
            {
                switch( GetEventKind( event ) )
                {
                    case kEventTextInputUnicodeForKeyEvent :
                        {
                            EventRef rawEvent ;
                            err = GetEventParameter( event , kEventParamTextInputSendKeyboardEvent ,typeEventRef,NULL,sizeof(rawEvent),NULL,&rawEvent ) ;
                            converted = true ;
                            {
                                UInt32 keyCode ;
                                unsigned char charCode ;
                                UInt32 modifiers ;
                                GetMouse( &rec->where) ;
                                rec->what = keyDown ;
                                err = GetEventParameter(rawEvent, kEventParamKeyModifiers, typeUInt32, NULL, 4, NULL, &modifiers);
                                err = GetEventParameter(rawEvent, kEventParamKeyCode, typeUInt32, NULL, 4, NULL, &keyCode);
                                err = GetEventParameter(rawEvent, kEventParamKeyMacCharCodes, typeChar, NULL, 1, NULL, &charCode);
                                rec->modifiers = modifiers ;
                                rec->message = (keyCode << 8 ) + charCode ;
                            }
                       }
                        break ;
                    default :
                        break ;
                }
            }
            break ;
        }
    }

    return converted ;
}

/*
pascal OSStatus wxMacApplicationEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
{
    OSStatus result = eventNotHandledErr ;

    EventRecord rec ;
    switch ( GetEventClass( event ) )
    {
        case kEventClassKeyboard :
            if ( wxMacConvertEventToRecord( event , &rec ) )
            {
                wxTheApp->MacHandleModifierEvents( &rec ) ;
                wxTheApp->MacHandleOneEvent( &rec ) ;
                result = noErr ;
            }
            break ;
        case kEventClassTextInput :
            if ( wxMacConvertEventToRecord( event , &rec ) )
            {
                wxTheApp->MacHandleModifierEvents( &rec ) ;
                wxTheApp->MacHandleOneEvent( &rec ) ;
                result = noErr ;
            }
            break ;
        default :
            break ;
    }
    return result ;
}
*/
#endif

wxApp::wxApp()
{
    m_printMode = wxPRINT_WINDOWS;
    m_auto3D = true;

    m_macCurrentEvent = NULL ;
#if TARGET_CARBON
    m_macCurrentEventHandlerCallRef = NULL ;
#endif
}

int wxApp::MainLoop()
{
    m_keepGoing = true;

    while (m_keepGoing)
    {
        MacDoOneEvent() ;
    }

    return 0;
}

void wxApp::ExitMainLoop()
{
    m_keepGoing = false;
}

// Is a message/event pending?
bool wxApp::Pending()
{
#if TARGET_CARBON
    // without the receive event (with pull param = false ) nothing is ever reported
    EventRef theEvent;
    ReceiveNextEvent (0, NULL, kEventDurationNoWait, false, &theEvent);
    return GetNumEventsInQueue( GetMainEventQueue() ) > 0 ;
#else
    EventRecord event ;

    return EventAvail( everyEvent , &event ) ;
#endif
}

// Dispatch a message.
bool wxApp::Dispatch()
{
    MacDoOneEvent() ;

    return true;
}

void wxApp::OnIdle(wxIdleEvent& event)
{
    wxAppBase::OnIdle(event);

    // If they are pending events, we must process them: pending events are
    // either events to the threads other than main or events posted with
    // wxPostEvent() functions
    wxMacProcessNotifierAndPendingEvents();

  if(!wxMenuBar::MacGetInstalledMenuBar() && wxMenuBar::MacGetCommonMenuBar())
    wxMenuBar::MacGetCommonMenuBar()->MacInstallMenuBar();
}

void wxApp::WakeUpIdle()
{
    wxMacWakeUp() ;
}

void wxApp::Exit()
{
    wxApp::CleanUp();
    ::ExitToShell() ;
}

void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
{
    if (GetTopWindow())
        GetTopWindow()->Close(true);
}

// Default behaviour: close the application with prompts. The
// user can veto the close, and therefore the end session.
void wxApp::OnQueryEndSession(wxCloseEvent& event)
{
    if (GetTopWindow())
    {
        if (!GetTopWindow()->Close(!event.CanVeto()))
            event.Veto(true);
    }
}

extern "C" void wxCYield() ;
void wxCYield()
{
    wxYield() ;
}

// Yield to other processes

bool wxApp::Yield(bool onlyIfNeeded)
{
    if (s_inYield)
    {
        if ( !onlyIfNeeded )
        {
            wxFAIL_MSG( wxT("wxYield called recursively" ) );
        }

        return false;
    }

    s_inYield = true;

#if wxUSE_THREADS
    YieldToAnyThread() ;
#endif
    // by definition yield should handle all non-processed events
#if TARGET_CARBON
    EventRef theEvent;

    OSStatus status = noErr ;
    do
    {
        s_inReceiveEvent = true ;
        status = ReceiveNextEvent(0, NULL,kEventDurationNoWait,true,&theEvent) ;
        s_inReceiveEvent = false ;

        if ( status == eventLoopTimedOutErr )
        {
            // make sure next time the event loop will trigger idle events
            sleepTime = kEventDurationNoWait ;
        }
        else if ( status == eventLoopQuitErr )
        {
            // according to QA1061 this may also occur when a WakeUp Process
            // is executed
        }
        else
        {
            MacHandleOneEvent( theEvent ) ;
            ReleaseEvent(theEvent);
        }
    } while( status == noErr ) ;
#else
    EventRecord event ;

    // having a larger value here leads to large performance slowdowns
    // so we cannot give background apps more processor time here
    // we do so however having a large sleep value in the main event loop
    sleepTime = 0 ;

    while ( !IsExiting() && WaitNextEvent(everyEvent, &event,sleepTime, (RgnHandle) wxApp::s_macCursorRgn))
    {
        MacHandleModifierEvents( &event ) ;
        MacHandleOneEvent( &event );
        if ( event.what != kHighLevelEvent )
            SetRectRgn( (RgnHandle) wxApp::s_macCursorRgn , event.where.h , event.where.v ,  event.where.h + 1 , event.where.v + 1 ) ;
    }
    MacHandleModifierEvents( &event ) ;
#endif

    wxMacProcessNotifierAndPendingEvents() ;
    s_inYield = false;

    return true;
}

// platform specifics

void wxApp::MacSuspend( bool convertClipboard )
{
#if !TARGET_CARBON
    // we have to deactive the top level windows manually

    wxWindowListNode* node = wxTopLevelWindows.GetFirst();
    while (node)
    {
        wxTopLevelWindow* win = (wxTopLevelWindow*) node->Data();
#if TARGET_CARBON
#if 0 //  having problems right now with that
        if (!win->HasFlag(wxSTAY_ON_TOP))
#endif
#endif
            win->MacActivate( ((EventRecord*) MacGetCurrentEvent())->when , false ) ;

        node = node->GetNext();
    }

    ::HideFloatingWindows() ;
#endif
    s_lastMouseDown = 0 ;

    if( convertClipboard )
    {
        MacConvertPrivateToPublicScrap() ;
    }
}

extern wxList wxModalDialogs;

void wxApp::MacResume( bool convertClipboard )
{
    s_lastMouseDown = 0 ;
    if( convertClipboard )
    {
        MacConvertPublicToPrivateScrap() ;
    }

#if !TARGET_CARBON
    ::ShowFloatingWindows() ;
    // raise modal dialogs in case a non modal window was selected to activate the app

    wxNode* node = wxModalDialogs.GetFirst();
    while (node)
    {
        wxDialog* dialog = (wxDialog *) node->GetData();
        dialog->Raise();

        node = node->GetNext();
    }
#endif
}

void wxApp::MacConvertPrivateToPublicScrap()