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

                 retval = WXK_HELP;
          break;
        case kBackspaceCharCode :
                 retval = WXK_BACK;
          break;
        case kTabCharCode :
                 retval = WXK_TAB;
          break;
        case kPageUpCharCode :
                 retval = WXK_PAGEUP;
          break;
        case kPageDownCharCode :
                 retval = WXK_PAGEDOWN;
          break;
        case kReturnCharCode :
                 retval = WXK_RETURN;
          break;
            case kFunctionKeyCharCode :
            {
                switch( code )
                {
                    case 0x7a :
                        retval = WXK_F1 ;
                        break;
                    case 0x78 :
                        retval = WXK_F2 ;
                        break;
                    case 0x63 :
                        retval = WXK_F3 ;
                        break;
                    case 0x76 :
                        retval = WXK_F4 ;
                        break;
                    case 0x60 :
                        retval = WXK_F5 ;
                        break;
                    case 0x61 :
                        retval = WXK_F6 ;
                        break;
                    case 0x62:
                        retval = WXK_F7 ;
                        break;
                    case 0x64 :
                        retval = WXK_F8 ;
                        break;
                    case 0x65 :
                        retval = WXK_F9 ;
                        break;
                    case 0x6D :
                        retval = WXK_F10 ;
                        break;
                    case 0x67 :
                        retval = WXK_F11 ;
                        break;
                    case 0x6F :
                        retval = WXK_F12 ;
                        break;
                    case 0x69 :
                        retval = WXK_F13 ;
                        break;
                    case 0x6B :
                        retval = WXK_F14 ;
                        break;
                    case 0x71 :
                        retval = WXK_F15 ;
                        break;
                }
            }
            break ;
            case kEscapeCharCode :
                retval = WXK_ESCAPE ;
            break ;
            case kLeftArrowCharCode :
                retval = WXK_LEFT ;
            break ;
            case kRightArrowCharCode :
                retval = WXK_RIGHT ;
            break ;
            case kUpArrowCharCode :
                retval = WXK_UP ;
            break ;
            case kDownArrowCharCode :
                retval = WXK_DOWN ;
            break ;
            case kDeleteCharCode :
                retval = WXK_DELETE ;
             default:
            break ;
     } // end switch

    return retval;
}

int wxKeyCodeToMacModifier(wxKeyCode key)
{
    switch (key)
    {
    case WXK_START:
    case WXK_MENU:
        return cmdKey;

    case WXK_SHIFT:
        return shiftKey;

    case WXK_CAPITAL:
        return alphaLock;

    case WXK_ALT:
        return optionKey;

    case WXK_CONTROL:
        return controlKey;

    default:
        return 0;
    }
}

bool wxGetKeyState(wxKeyCode key) //virtual key code if < 10.2.x, else see below
{
    wxASSERT_MSG(key != WXK_LBUTTON && key != WXK_RBUTTON && key !=
        WXK_MBUTTON, wxT("can't use wxGetKeyState() for mouse buttons"));

    KeyMap keymap;
    GetKeys(keymap);
    return !!(BitTst(keymap, (sizeof(KeyMap)*8) - key));
}

#if !TARGET_CARBON
void wxApp::MacHandleKeyDownEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    wxToolTip::RemoveToolTips() ;

    UInt32 menuresult = UMAMenuEvent(ev) ;
    if ( HiWord( menuresult ) )
    {
        if ( !s_macIsInModalLoop )
            MacHandleMenuSelect( HiWord( menuresult ) , LoWord( menuresult ) ) ;
    }
    else
    {
         wxWindow* focus = wxWindow::FindFocus() ;

        if ( MacSendKeyDownEvent( focus , ev->message , ev->modifiers , ev->when , ev->where.h , ev->where.v ) == false )
        {
#if 0
            // we must handle control keys the other way round, otherwise text content is updated too late
            // has not been handled -> perform default
            wxControl* control = wxDynamicCast( focus , wxControl ) ;
            if ( control &&  control->GetMacControl() != NULL )
            {
                short keycode ;
                short keychar ;
                keychar = short(ev->message & charCodeMask);
                keycode = short(ev->message & keyCodeMask) >> 8 ;
                ::HandleControlKey( (ControlHandle) control->GetMacControl() , keycode , keychar , ev->modifiers ) ;
            }
#endif
        }
    }
}

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

    UInt32 menuresult = UMAMenuEvent(ev) ;
    if ( HiWord( menuresult ) )
    {
    }
    else
    {
        MacSendKeyUpEvent( wxWindow::FindFocus() , ev->message , ev->modifiers , ev->when , ev->where.h , ev->where.v ) ;
    }
}

#endif

bool wxApp::MacSendKeyDownEvent( wxWindow* focus , long keymessage , long modifiers , long when , short wherex , short wherey )
{
    if ( !focus )
        return false ;

    short keycode ;
    short keychar ;
    keychar = short(keymessage & charCodeMask);
    keycode = short(keymessage & keyCodeMask) >> 8 ;

    if ( modifiers & ( controlKey|shiftKey|optionKey ) )
    {
        // control interferes with some built-in keys like pgdown, return etc. therefore we remove the controlKey modifier
        // and look at the character after
        UInt32 state = 0;
        UInt32 keyInfo = KeyTranslate((Ptr)GetScriptManagerVariable(smKCHRCache), ( modifiers & (~(controlKey|shiftKey|optionKey))) | keycode, &state);
        keychar = short(keyInfo & charCodeMask);
        keycode = short(keyInfo & keyCodeMask) >> 8 ;
    }
    long keyval = wxMacTranslateKey(keychar, keycode) ;
    long realkeyval = keyval ;
    if ( keyval == keychar )
    {
        // we are not on a special character combo -> pass the real os event-value to EVT_CHAR, but not to EVT_KEY (make upper first)
        realkeyval = short(keymessage & charCodeMask) ;
        keyval = wxToupper( keyval ) ;
    }

    wxKeyEvent event(wxEVT_KEY_DOWN);
    bool handled = false ;
    event.m_shiftDown = modifiers & shiftKey;
    event.m_controlDown = modifiers & controlKey;
    event.m_altDown = modifiers & optionKey;
    event.m_metaDown = modifiers & cmdKey;
    event.m_keyCode = keyval ;

    event.m_x = wherex;
    event.m_y = wherey;
    event.SetTimestamp(when);
    event.SetEventObject(focus);
    handled = focus->GetEventHandler()->ProcessEvent( event ) ;
    if ( handled && event.GetSkipped() )
        handled = false ;
    if ( !handled )
    {
#if wxUSE_ACCEL
        if (!handled)
        {
            wxWindow *ancestor = focus;
            while (ancestor)
            {
                int command = ancestor->GetAcceleratorTable()->GetCommand( event );
                if (command != -1)
                {
                    wxCommandEvent command_event( wxEVT_COMMAND_MENU_SELECTED, command );
                    handled = ancestor->GetEventHandler()->ProcessEvent( command_event );
                    break;
                }
                if (ancestor->IsTopLevel())
                    break;
                ancestor = ancestor->GetParent();
            }
        }
#endif // wxUSE_ACCEL
    }
    if (!handled)
    {
        event.Skip( false ) ;
        event.SetEventType( wxEVT_CHAR ) ;
        // raw value again
        event.m_keyCode = realkeyval ;

        handled = focus->GetEventHandler()->ProcessEvent( event ) ;
        if ( handled && event.GetSkipped() )
            handled = false ;
    }
    if ( !handled &&
         (keyval == WXK_TAB) &&
// CS: copied the change below from wxGTK
// VZ: testing for wxTE_PROCESS_TAB shouldn't be done here the control may
//     have this style, yet choose not to process this particular TAB in which
//     case TAB must still work as a navigational character
#if 0
         (!focus->HasFlag(wxTE_PROCESS_TAB)) &&
#endif
         (focus->GetParent()) &&
         (focus->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
    {
        wxNavigationKeyEvent new_event;
        new_event.SetEventObject( focus );
        new_event.SetDirection( !event.ShiftDown() );
        /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
        new_event.SetWindowChange( event.ControlDown() );
        new_event.SetCurrentFocus( focus );
        handled = focus->GetEventHandler()->ProcessEvent( new_event );
        if ( handled && new_event.GetSkipped() )
            handled = false ;
    }
    // backdoor handler for default return and command escape
    if ( !handled && (!focus->IsKindOf(CLASSINFO(wxControl) ) || !focus->MacCanFocus() ) )
    {
        // if window is not having a focus still testing for default enter or cancel
        // TODO add the UMA version for ActiveNonFloatingWindow
        wxWindow* focus = wxFindWinFromMacWindow( (WXWindow) FrontWindow() ) ;
        if ( focus )
        {
            if ( keyval == WXK_RETURN )
            {
                wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
                if ( tlw && tlw->GetDefaultItem() )
                {
                    wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
                    if ( def && def->IsEnabled() )
                    {
                        wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
                        event.SetEventObject(def);
                        def->Command(event);
                        return true ;
                    }
                }
            }
            /* generate wxID_CANCEL if command-. or <esc> has been pressed (typically in dialogs) */
            else if (keyval == WXK_ESCAPE || (keyval == '.' && modifiers & cmdKey ) )
            {
                wxCommandEvent new_event(wxEVT_COMMAND_BUTTON_CLICKED,wxID_CANCEL);
                new_event.SetEventObject( focus );
                handled = focus->GetEventHandler()->ProcessEvent( new_event );
            }
        }
    }
    return handled ;
}

bool wxApp::MacSendKeyUpEvent( wxWindow* focus , long keymessage , long modifiers , long when , short wherex , short wherey )
{
    if ( !focus )
        return false ;

    short keycode ;
    short keychar ;
    keychar = short(keymessage & charCodeMask);
    keycode = short(keymessage & keyCodeMask) >> 8 ;
    if ( modifiers & ( controlKey|shiftKey|optionKey ) )
    {
        // control interferes with some built-in keys like pgdown, return etc. therefore we remove the controlKey modifier
        // and look at the character after
        UInt32 state = 0;
        UInt32 keyInfo = KeyTranslate((Ptr)GetScriptManagerVariable(smKCHRCache), ( modifiers & (~(controlKey|shiftKey|optionKey))) | keycode, &state);
        keychar = short(keyInfo & charCodeMask);
        keycode = short(keyInfo & keyCodeMask) >> 8 ;
    }
    long keyval = wxMacTranslateKey(keychar, keycode) ;

    if ( keyval == keychar )
    {
        keyval = wxToupper( keyval ) ;
    }
    bool handled = false ;

    wxKeyEvent event(wxEVT_KEY_UP);
    event.m_shiftDown = modifiers & shiftKey;
    event.m_controlDown = modifiers & controlKey;
    event.m_altDown = modifiers & optionKey;
    event.m_metaDown = modifiers & cmdKey;
    event.m_keyCode = keyval ;

    event.m_x = wherex;
    event.m_y = wherey;
    event.SetTimestamp(when);
    event.SetEventObject(focus);
    handled = focus->GetEventHandler()->ProcessEvent( event ) ;

    return handled ;
}

#if !TARGET_CARBON
void wxApp::MacHandleActivateEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    WindowRef window = (WindowRef) ev->message ;
    if ( window )
    {
        bool activate = (ev->modifiers & activeFlag ) ;
        WindowClass wclass ;
        ::GetWindowClass ( window , &wclass ) ;
        if ( wclass == kFloatingWindowClass )
        {
            // if it is a floater we activate/deactivate the front non-floating window instead
            window = ::FrontNonFloatingWindow() ;
        }
        wxTopLevelWindowMac* win = wxFindWinFromMacWindow( (WXWindow) window ) ;
        if ( win )
            win->MacActivate( ev->when , activate ) ;
    }
}

void wxApp::MacHandleUpdateEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    WindowRef window = (WindowRef) ev->message ;
    wxTopLevelWindowMac * win = wxFindWinFromMacWindow( (WXWindow) window ) ;
    if ( win )
    {
        if ( !wxPendingDelete.Member(win) )
            win->MacUpdate( ev->when ) ;
    }
    else
    {
        // since there is no way of telling this foreign window to update itself
        // we have to invalidate the update region otherwise we keep getting the same
        // event over and over again
        BeginUpdate( window ) ;
        EndUpdate( window ) ;
    }
}

void wxApp::MacHandleDiskEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    if ( HiWord( ev->message ) != noErr )
  {
        OSErr err ;
        Point point ;
         SetPt( &point , 100 , 100 ) ;

          err = DIBadMount( point , ev->message ) ;
        wxASSERT( err == noErr ) ;
    }
}

void wxApp::MacHandleOSEvent( WXEVENTREF evr )
{
    EventRecord* ev = (EventRecord*) evr ;
    switch( ( ev->message & osEvtMessageMask ) >> 24 )
    {
        case suspendResumeMessage :
            {
                bool isResuming = ev->message & resumeFlag ;
                bool convertClipboard = ev->message & convertClipboardFlag ;

                bool doesActivate = UMAGetProcessModeDoesActivateOnFGSwitch() ;
                if ( isResuming )
                {
                    WindowRef oldFrontWindow = NULL ;
                    WindowRef newFrontWindow = NULL ;

                    // in case we don't take care of activating ourselves, we have to synchronize
                    // our idea of the active window with the process manager's - which it already activated

                    if ( !doesActivate )
                        oldFrontWindow = ::Fron