app.cpp

wxWidgets 是一个跨平台的 GUI 框架。它给开发人员提供了统一的接口

{
}

void wxApp::MacConvertPublicToPrivateScrap()
{
}

void wxApp::MacDoOneEvent()
{
#if TARGET_CARBON
    EventRef theEvent;

    s_inReceiveEvent = true ;
    OSStatus status = ReceiveNextEvent(0, NULL,sleepTime,true,&theEvent) ;
    s_inReceiveEvent = false ;
    if ( status == eventLoopTimedOutErr )
    {
        if ( wxTheApp->ProcessIdle() )
            sleepTime = kEventDurationNoWait ;
        else
        {
#if wxUSE_THREADS
            if (g_numberOfThreads)
            {
                sleepTime = kEventDurationNoWait;
            }
            else
#endif // wxUSE_THREADS
            {
                sleepTime = kEventDurationSecond;
            }
        }
    }
    else if ( status == eventLoopQuitErr )
    {
        // according to QA1061 this may also occur when a WakeUp Process
        // is executed
    }
    else
    {
        MacHandleOneEvent( theEvent ) ;
        ReleaseEvent(theEvent);
        sleepTime = kEventDurationNoWait ;
    }
#else
      EventRecord event ;

    EventMask eventMask = everyEvent ;

    if (WaitNextEvent(eventMask, &event, sleepTime, (RgnHandle) s_macCursorRgn))
    {
        MacHandleModifierEvents( &event ) ;
        MacHandleOneEvent( &event );
    }
    else
    {
        MacHandleModifierEvents( &event ) ;
        // idlers
        WindowPtr window = ::FrontWindow() ;
        if ( window )
            ::IdleControls( window ) ;

        if ( wxTheApp->ProcessIdle() )
            sleepTime = kEventDurationNoWait;
        else
        {
#if wxUSE_THREADS
            if (g_numberOfThreads)
            {
                sleepTime = kEventDurationNoWait;
            }
            else
#endif // wxUSE_THREADS
            {
                sleepTime = kEventDurationSecond;
            }
        }
    }
    if ( event.what != kHighLevelEvent )
        SetRectRgn( (RgnHandle) s_macCursorRgn , event.where.h , event.where.v ,  event.where.h + 1 , event.where.v + 1 ) ;
#endif
    // repeaters

    DeletePendingObjects() ;
    wxMacProcessNotifierAndPendingEvents() ;
}

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

void wxApp::MacHandleOneEvent( WXEVENTREF evr )
{
#if TARGET_CARBON
    EventTargetRef theTarget;
    theTarget = GetEventDispatcherTarget();
    m_macCurrentEvent = evr ;
    OSStatus status = SendEventToEventTarget ((EventRef) evr , theTarget);
    if(status == eventNotHandledErr)
    {
        MacHandleUnhandledEvent(evr);
    }
#else
    EventRecord* ev = (EventRecord*) evr ;
    m_macCurrentEvent = ev ;

    wxApp::sm_lastMessageTime = ev->when ;

    switch (ev->what)
    {
        case mouseDown:
            MacHandleMouseDownEvent( ev ) ;
            if ( ev->modifiers & controlKey )
                s_lastMouseDown = 2;
            else
                s_lastMouseDown = 1;
            break;
        case mouseUp:
            if ( s_lastMouseDown == 2 )
            {
                ev->modifiers |= controlKey ;
            }
            else
            {
                ev->modifiers &= ~controlKey ;
            }
            MacHandleMouseUpEvent( ev ) ;
            s_lastMouseDown = 0;
            break;
        case activateEvt:
            MacHandleActivateEvent( ev ) ;
            break;
        case updateEvt:
            // In embedded mode we first let the UnhandledEvent function
            // try to handle the update event. If we handle it ourselves
            // first and then pass it on, the host's windows won't update.
            MacHandleUnhandledEvent(ev);
            MacHandleUpdateEvent( ev ) ;
            break;
        case keyDown:
        case autoKey:
            MacHandleKeyDownEvent( ev ) ;
            break;
        case keyUp:
            MacHandleKeyUpEvent( ev ) ;
            break;
        case diskEvt:
            MacHandleDiskEvent( ev ) ;
            break;
        case osEvt:
            MacHandleOSEvent( ev ) ;
            break;
        case kHighLevelEvent:
            MacHandleHighLevelEvent( ev ) ;
            break;
        default:
            break;
    }
#endif
    wxMacProcessNotifierAndPendingEvents() ;
}

#if !TARGET_CARBON
bool s_macIsInModalLoop = false ;

void wxApp::MacHandleModifierEvents( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    if ( ev->modifiers != s_lastModifiers && wxWindow::FindFocus() != NULL )
    {
        wxKeyEvent event(wxEVT_KEY_DOWN);

        event.m_shiftDown = ev->modifiers & shiftKey;
        event.m_controlDown = ev->modifiers & controlKey;
        event.m_altDown = ev->modifiers & optionKey;
        event.m_metaDown = ev->modifiers & cmdKey;

        event.m_x = ev->where.h;
        event.m_y = ev->where.v;
        event.SetTimestamp( ev->when );
        wxWindow* focus = wxWindow::FindFocus() ;
        event.SetEventObject(focus);

        if ( (ev->modifiers ^ s_lastModifiers ) & controlKey )
        {
            event.m_keyCode = WXK_CONTROL ;
            event.SetEventType( ( ev->modifiers & controlKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ;
            focus->GetEventHandler()->ProcessEvent( event ) ;
        }
        if ( (ev->modifiers ^ s_lastModifiers ) & shiftKey )
        {
            event.m_keyCode = WXK_SHIFT ;
            event.SetEventType( ( ev->modifiers & shiftKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ;
            focus->GetEventHandler()->ProcessEvent( event ) ;
        }
        if ( (ev->modifiers ^ s_lastModifiers ) & optionKey )
        {
            event.m_keyCode = WXK_ALT ;
            event.SetEventType( ( ev->modifiers & optionKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ;
            focus->GetEventHandler()->ProcessEvent( event ) ;
        }
        if ( ( ev->modifiers ^ s_lastModifiers ) & cmdKey )
        {
            event.m_keyCode = WXK_COMMAND ;
            event.SetEventType( ( ev->modifiers & cmdKey ) ? wxEVT_KEY_DOWN : wxEVT_KEY_UP ) ;
            focus->GetEventHandler()->ProcessEvent( event ) ;
        }
        s_lastModifiers = ev->modifiers ;
    }
}

void wxApp::MacHandleHighLevelEvent( WXEVENTREF evr )
{
    // we must avoid reentrancy problems when processing high level events eg printing
    bool former = s_inYield ;
    s_inYield = true ;
    EventRecord* ev = (EventRecord*) evr ;
    ::AEProcessAppleEvent( ev ) ;
    s_inYield = former ;
}

void wxApp::MacHandleMouseDownEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    wxToolTip::RemoveToolTips() ;

    WindowRef window;
    WindowRef frontWindow = ::FrontNonFloatingWindow() ;
    WindowAttributes frontWindowAttributes = NULL ;
    if ( frontWindow )
        ::GetWindowAttributes( frontWindow , &frontWindowAttributes ) ;

    short windowPart = ::FindWindow(ev->where, &window);
    wxTopLevelWindowMac* win = wxFindWinFromMacWindow( (WXWindow) window ) ;
    if ( wxPendingDelete.Member(win) )
        return ;

    BitMap screenBits;
    GetQDGlobalsScreenBits( &screenBits );

    switch (windowPart)
    {
        case inMenuBar :
            if ( s_macIsInModalLoop )
            {
                SysBeep ( 30 ) ;
            }
            else
            {
                UInt32 menuresult = MenuSelect(ev->where) ;
               MacHandleMenuSelect( HiWord( menuresult ) , LoWord( menuresult ) );
                s_lastMouseDown = 0;
            }
            break ;
        case inSysWindow :
            SystemClick( ev , window ) ;
            s_lastMouseDown = 0;
            break ;
        case inDrag :
            if ( window != frontWindow && s_macIsInModalLoop && !(ev->modifiers & cmdKey ) )
            {
                SysBeep ( 30 ) ;
            }
            else
            {
                DragWindow(window, ev->where, &screenBits.bounds);
                if (win)
                {
                    GrafPtr port ;
                    GetPort( &port ) ;
                    Point pt = { 0, 0 } ;
                    SetPortWindowPort(window) ;
                    LocalToGlobal( &pt ) ;
                    SetPort( port ) ;
                        win->SetSize( pt.h , pt.v , -1 ,
                            -1 , wxSIZE_USE_EXISTING);
                }
                s_lastMouseDown = 0;
            }
            break ;
        case inGoAway:
            if (TrackGoAway(window, ev->where))
            {
                if ( win )
                    win->Close() ;
            }
            s_lastMouseDown = 0;
            break;
        case inGrow:
          {
                Rect newContentRect ;
                Rect constraintRect ;
                constraintRect.top = win->GetMinHeight() ;
                if ( constraintRect.top == -1 )
                    constraintRect.top  = 0 ;
                constraintRect.left = win->GetMinWidth() ;
                if ( constraintRect.left == -1 )
                    constraintRect.left  = 0 ;
                constraintRect.right = win->GetMaxWidth() ;
                if ( constraintRect.right == -1 )
                    constraintRect.right  = 32000 ;
                constraintRect.bottom = win->GetMaxHeight() ;
                if ( constraintRect.bottom == -1 )
                    constraintRect.bottom = 32000 ;

                Boolean growResult = ResizeWindow( window , ev->where ,
                    &constraintRect , &newContentRect ) ;
                if ( growResult )
                {
                    win->SetSize( newContentRect.left , newContentRect.top ,
                        newContentRect.right - newContentRect.left ,
                        newContentRect.bottom - newContentRect.top, wxSIZE_USE_EXISTING);
                }
                s_lastMouseDown = 0;
          }
            break;
        case inZoomIn:
        case inZoomOut:
                if (TrackBox(window, ev->where, windowPart))
                {
                    // TODO setup size event
                    ZoomWindow( window , windowPart , false ) ;
                    if (win)
                    {
                        Rect tempRect ;
                        GrafPtr port ;
                        GetPort( &port ) ;
                        Point pt = { 0, 0 } ;
                        SetPortWindowPort(window) ;
                        LocalToGlobal( &pt ) ;
                        SetPort( port ) ;

                        GetWindowPortBounds(window, &tempRect ) ;
                        win->SetSize( pt.h , pt.v , tempRect.right-tempRect.left ,
                            tempRect.bottom-tempRect.top, wxSIZE_USE_EXISTING);
                    }
                }
            s_lastMouseDown = 0;
            break;
        case inCollapseBox :
                // TODO setup size event
            s_lastMouseDown = 0;
            break ;

        case inContent :
                {
                    GrafPtr port ;
                    GetPort( &port ) ;
                    SetPortWindowPort(window) ;
                    SetPort( port ) ;
                }
                if ( window != frontWindow && wxTheApp->s_captureWindow == NULL )
                {
                    if ( s_macIsInModalLoop )
                    {
                        SysBeep ( 30 ) ;
                    }
                    else if ( UMAIsWindowFloating( window ) )
                    {
                        if ( win )
                            win->MacMouseDown( ev , windowPart ) ;
                    }
                    else
                    {
                        // Activate window first
                        ::SelectWindow( window ) ;

                        // Send event later
                        if ( win )
                            win->MacMouseDown( ev , windowPart ) ;
                    }
                }
                else
                {
                    if ( win )
                        win->MacMouseDown( ev , windowPart ) ;
                }
            break ;
        default:
            break;
    }
}

void wxApp::MacHandleMouseUpEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    WindowRef window;

    short windowPart = inNoWindow ;
    if ( wxTheApp->s_captureWindow )
    {
        window = (WindowRef) s_captureWindow->MacGetRootWindow() ;
        windowPart = inContent ;
    }
    else
    {
        windowPart = ::FindWindow(ev->where, &window) ;
    }

    switch (windowPart)
    {
        case inMenuBar :
            break ;
        case inSysWindow :
            break ;
        default:
            {
                wxTopLevelWindowMac* win = wxFindWinFromMacWindow( (WXWindow) window ) ;
                if ( win )
                    win->MacMouseUp( ev , windowPart ) ;
            }
            break;
    }
}

#endif

long wxMacTranslateKey(unsigned char key, unsigned char code) ;
long wxMacTranslateKey(unsigned char key, unsigned char code)
{
    long retval = key ;
    switch (key)
    {
        case kHomeCharCode :
                 retval = WXK_HOME;
          break;
        case kEnterCharCode :
                 retval = WXK_RETURN;
          break;
        case kEndCharCode :
                 retval = WXK_END;
          break;
        case kHelpCharCode :