app.cpp

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

    CFRunLoopSourceContext event_posted_context = {0};
    event_posted_context.perform = macPostedEventCallback;
    m_macEventPosted = CFRunLoopSourceCreate(NULL,0,&event_posted_context);
    CFRunLoopAddSource(CFRunLoopGetCurrent(), m_macEventPosted, kCFRunLoopCommonModes);
	// run loop takes ownership
	CFRelease(m_macEventPosted);
#endif

    UMAShowArrowCursor() ;

    return true;
}

AEEventHandlerUPP sODocHandler = NULL ;
AEEventHandlerUPP sOAppHandler = NULL ;
AEEventHandlerUPP sPDocHandler = NULL ;
AEEventHandlerUPP sRAppHandler = NULL ;
AEEventHandlerUPP sQuitHandler = NULL ;

bool wxApp::OnInitGui()
{
    if ( !wxAppBase::OnInitGui() )
        return false ;

    InstallStandardEventHandler( GetApplicationEventTarget() ) ;

    if (!sm_isEmbedded)
    {
        InstallApplicationEventHandler(
            GetwxMacAppEventHandlerUPP(),
            GetEventTypeCount(eventList), eventList, wxTheApp, (EventHandlerRef *)&(wxTheApp->m_macEventHandler));
    }

    if (!sm_isEmbedded)
    {
        sODocHandler = NewAEEventHandlerUPP(AEHandleODoc) ;
        sOAppHandler = NewAEEventHandlerUPP(AEHandleOApp) ;
        sPDocHandler = NewAEEventHandlerUPP(AEHandlePDoc) ;
        sRAppHandler = NewAEEventHandlerUPP(AEHandleRApp) ;
        sQuitHandler = NewAEEventHandlerUPP(AEHandleQuit) ;

        AEInstallEventHandler( kCoreEventClass , kAEOpenDocuments ,
                               sODocHandler , 0 , FALSE ) ;
        AEInstallEventHandler( kCoreEventClass , kAEOpenApplication ,
                               sOAppHandler , 0 , FALSE ) ;
        AEInstallEventHandler( kCoreEventClass , kAEPrintDocuments ,
                               sPDocHandler , 0 , FALSE ) ;
        AEInstallEventHandler( kCoreEventClass , kAEReopenApplication ,
                               sRAppHandler , 0 , FALSE ) ;
        AEInstallEventHandler( kCoreEventClass , kAEQuitApplication ,
                               sQuitHandler , 0 , FALSE ) ;
    }

    return true ;
}

void wxApp::CleanUp()
{
#if wxUSE_TOOLTIPS
    wxToolTip::RemoveToolTips() ;
#endif

#ifdef __WXMAC_OSX__
    if (m_macEventPosted)
	{
		CFRunLoopRemoveSource(CFRunLoopGetCurrent(), m_macEventPosted, kCFRunLoopCommonModes);
		m_macEventPosted = NULL;
	}
#endif

    // One last chance for pending objects to be cleaned up
    wxTheApp->DeletePendingObjects();

    wxMacDestroyNotifierTable() ;

#ifndef __DARWIN__
#  if __option(profile)
    ProfilerDump( (StringPtr)"\papp.prof" ) ;
    ProfilerTerm() ;
#  endif
#endif

    UMACleanupToolbox() ;

    if (!sm_isEmbedded)
        RemoveEventHandler( (EventHandlerRef)(wxTheApp->m_macEventHandler) );

    if (!sm_isEmbedded)
    {
        AERemoveEventHandler( kCoreEventClass , kAEOpenDocuments ,
                               sODocHandler , FALSE ) ;
        AERemoveEventHandler( kCoreEventClass , kAEOpenApplication ,
                               sOAppHandler , FALSE ) ;
        AERemoveEventHandler( kCoreEventClass , kAEPrintDocuments ,
                               sPDocHandler , FALSE ) ;
        AERemoveEventHandler( kCoreEventClass , kAEReopenApplication ,
                               sRAppHandler , FALSE ) ;
        AERemoveEventHandler( kCoreEventClass , kAEQuitApplication ,
                               sQuitHandler , FALSE ) ;

        DisposeAEEventHandlerUPP( sODocHandler ) ;
        DisposeAEEventHandlerUPP( sOAppHandler ) ;
        DisposeAEEventHandlerUPP( sPDocHandler ) ;
        DisposeAEEventHandlerUPP( sRAppHandler ) ;
        DisposeAEEventHandlerUPP( sQuitHandler ) ;
    }

    wxAppBase::CleanUp();
}

//----------------------------------------------------------------------
// misc initialization stuff
//----------------------------------------------------------------------

#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)
{
    return __initialize( theInitBlock ) ;
}

pascal void __wxterminate(void)
{
    __terminate() ;
}

#endif /* WXMAKINGDLL_CORE && !__DARWIN__ */

bool wxMacConvertEventToRecord( EventRef event , EventRecord *rec)
{
    OSStatus err = noErr ;
    bool converted = ConvertEventRefToEventRecord( event, rec) ;

    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 ;
#ifndef __LP64__
                    GetMouse( &rec->where) ;
#endif
                    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, modifiers;
                                unsigned char charCode ;
#ifndef __LP64__

                                GetMouse( &rec->where) ;
#endif
                                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 ;

            default :
                break ;
        }
    }

    return converted ;
}

wxApp::wxApp()
{
    m_printMode = wxPRINT_WINDOWS;

    m_macCurrentEvent = NULL ;
    m_macCurrentEventHandlerCallRef = NULL ;

#ifdef __WXMAC_OSX__
    m_macEventPosted = NULL ;
#endif
}

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()
{
#ifdef __WXMAC_OSX__
    if (m_macEventPosted)
    {
        CFRunLoopSourceSignal(m_macEventPosted);
    }
#endif

    wxMacWakeUp() ;
}

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;

    // by definition yield should handle all non-processed events

    EventRef theEvent;

    OSStatus status = noErr ;

    while ( status == noErr )
    {
        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);
        }
    }

    wxMacProcessNotifierAndPendingEvents() ;
    s_inYield = false;

    return true;
}

void wxApp::MacDoOneEvent()
{
    EventRef theEvent;

    s_inReceiveEvent = true ;
    OSStatus status = ReceiveNextEvent(0, NULL, sleepTime, true, &theEvent) ;
    s_inReceiveEvent = false ;

    switch (status)
    {
        case eventLoopTimedOutErr :
            if ( wxTheApp->ProcessIdle() )
                sleepTime = kEventDurationNoWait ;
            else
                sleepTime = kEventDurationSecond;
            break;

        case eventLoopQuitErr :
            // according to QA1061 this may also occur
            // when a WakeUp Process is executed
            break;

        default:
            MacHandleOneEvent( theEvent ) ;
            ReleaseEvent( theEvent );
            sleepTime = kEventDurationNoWait ;
            break;
    }
    // repeaters

    DeletePendingObjects() ;
    wxMacProcessNotifierAndPendingEvents() ;
}

// virtual
void wxApp::MacHandleUnhandledEvent( WXEVENTREF evr )
{
    // Override to process unhandled events as you please
}

CFMutableArrayRef GetAutoReleaseArray()
{
    static CFMutableArrayRef array = 0;
    if ( array == 0)
        array= CFArrayCreateMutable(kCFAllocatorDefault,0,&kCFTypeArrayCallBacks);
    return array;
}

void wxApp::MacHandleOneEvent( WXEVENTREF evr )
{
    EventTargetRef theTarget;
    theTarget = GetEventDispatcherTarget();
    m_macCurrentEvent = evr ;

    OSStatus status = SendEventToEventTarget((EventRef) evr , theTarget);
    if (status == eventNotHandledErr)
        MacHandleUnhandledEvent(evr);

    wxMacProcessNotifierAndPendingEvents() ;

#if wxUSE_THREADS
    wxMutexGuiLeaveOrEnter();
#endif // wxUSE_THREADS

    CFArrayRemoveAllValues( GetAutoReleaseArray() );
}

void wxApp::MacAddToAutorelease( void* cfrefobj )
{
    CFArrayAppendValue( GetAutoReleaseArray(), cfrefobj );
}

long wxMacTranslateKey(unsigned char key, unsigned char code)
{
    long retval = key ;
    switch (key)
    {
        case kHomeCharCode :
            retval = WXK_HOME;