toplevel.cpp

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

pascal OSStatus wxMacTopLevelMouseEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
{
    wxTopLevelWindowMac* toplevelWindow = (wxTopLevelWindowMac*) data ;

    OSStatus result = eventNotHandledErr ;

    wxMacCarbonEvent cEvent( event ) ;

    Point screenMouseLocation = cEvent.GetParameter<Point>(kEventParamMouseLocation) ;
    Point windowMouseLocation = screenMouseLocation ;

    WindowRef window = NULL;
    short windowPart = ::FindWindow(screenMouseLocation, &window);

    wxWindow* currentMouseWindow = NULL ;
    ControlRef control = NULL ;

#if NEW_CAPTURE_HANDLING
    if ( wxApp::s_captureWindow )
    {
        window = (WindowRef) wxApp::s_captureWindow->MacGetTopLevelWindowRef() ;
        windowPart = inContent ;
    }
#endif

    if ( window )
    {
        wxMacGlobalToLocal( window,  &windowMouseLocation ) ;

        if ( wxApp::s_captureWindow
#if !NEW_CAPTURE_HANDLING
             && wxApp::s_captureWindow->MacGetTopLevelWindowRef() == (WXWindow) window && windowPart == inContent
#endif
             )
        {
            currentMouseWindow = wxApp::s_captureWindow ;
        }
        else if ( (IsWindowActive(window) && windowPart == inContent) )
        {
            ControlPartCode part ;
            control = wxMacFindControlUnderMouse( toplevelWindow , windowMouseLocation , window , &part ) ;
            // if there is no control below the mouse position, send the event to the toplevel window itself
            if ( control == 0 )
            {
                currentMouseWindow = (wxWindow*) data ;
            }
            else
            {
                currentMouseWindow = wxFindControlFromMacControl( control ) ;
                if ( currentMouseWindow == NULL && cEvent.GetKind() == kEventMouseMoved )
                {
#if wxUSE_TOOLBAR
                    // for wxToolBar to function we have to send certaint events to it
                    // instead of its children (wxToolBarTools)
                    ControlRef parent ;
                    GetSuperControl(control, &parent );
                    wxWindow *wxParent = wxFindControlFromMacControl( parent ) ;
                    if ( wxParent && wxParent->IsKindOf( CLASSINFO( wxToolBar ) ) )
                        currentMouseWindow = wxParent ;
#endif
                }
            }

            // disabled windows must not get any input messages
            if ( currentMouseWindow && !currentMouseWindow->MacIsReallyEnabled() )
                currentMouseWindow = NULL;
        }
    }

    wxMouseEvent wxevent(wxEVT_LEFT_DOWN);
    SetupMouseEvent( wxevent , cEvent ) ;

    // handle all enter / leave events

    if ( currentMouseWindow != g_MacLastWindow )
    {
        if ( g_MacLastWindow )
        {
            wxMouseEvent eventleave(wxevent);
            eventleave.SetEventType( wxEVT_LEAVE_WINDOW );
            g_MacLastWindow->ScreenToClient( &eventleave.m_x, &eventleave.m_y );
            eventleave.SetEventObject( g_MacLastWindow ) ;
            wxevent.SetId( g_MacLastWindow->GetId() ) ;

#if wxUSE_TOOLTIPS
            wxToolTip::RelayEvent( g_MacLastWindow , eventleave);
#endif

            g_MacLastWindow->GetEventHandler()->ProcessEvent(eventleave);
        }

        if ( currentMouseWindow )
        {
            wxMouseEvent evententer(wxevent);
            evententer.SetEventType( wxEVT_ENTER_WINDOW );
            currentMouseWindow->ScreenToClient( &evententer.m_x, &evententer.m_y );
            evententer.SetEventObject( currentMouseWindow ) ;
            wxevent.SetId( currentMouseWindow->GetId() ) ;

#if wxUSE_TOOLTIPS
            wxToolTip::RelayEvent( currentMouseWindow , evententer );
#endif

            currentMouseWindow->GetEventHandler()->ProcessEvent(evententer);
        }

        g_MacLastWindow = currentMouseWindow ;
    }

    if ( windowPart == inMenuBar )
    {
        // special case menu bar, as we are having a low-level runloop we must do it ourselves
        if ( cEvent.GetKind() == kEventMouseDown )
        {
            ::MenuSelect( screenMouseLocation ) ;
            result = noErr ;
        }
    }
    else if ( currentMouseWindow )
    {
        wxWindow *currentMouseWindowParent = currentMouseWindow->GetParent();

        currentMouseWindow->ScreenToClient( &wxevent.m_x , &wxevent.m_y ) ;

        wxevent.SetEventObject( currentMouseWindow ) ;
        wxevent.SetId( currentMouseWindow->GetId() ) ;

        // make tooltips current

#if wxUSE_TOOLTIPS
        if ( wxevent.GetEventType() == wxEVT_MOTION )
            wxToolTip::RelayEvent( currentMouseWindow , wxevent );
#endif

        if ( currentMouseWindow->GetEventHandler()->ProcessEvent(wxevent) )
        {
            if ((currentMouseWindowParent != NULL) &&
                (currentMouseWindowParent->GetChildren().Find(currentMouseWindow) == NULL))
                currentMouseWindow = NULL;

            result = noErr;
        }
        else
        {
            // if the user code did _not_ handle the event, then perform the
            // default processing
            if ( wxevent.GetEventType() == wxEVT_LEFT_DOWN )
            {
                // ... that is set focus to this window
                if (currentMouseWindow->AcceptsFocus() && wxWindow::FindFocus()!=currentMouseWindow)
                    currentMouseWindow->SetFocus();
            }

            ControlPartCode dummyPart ;
            // if built-in find control is finding the wrong control (ie static box instead of overlaid
            // button, we cannot let the standard handler do its job, but must handle manually

            if ( ( cEvent.GetKind() == kEventMouseDown )
#ifdef __WXMAC_OSX__
                &&
                (FindControlUnderMouse(windowMouseLocation , window , &dummyPart) !=
                wxMacFindControlUnderMouse( toplevelWindow , windowMouseLocation , window , &dummyPart ) )
#endif
                )
            {
                if ( currentMouseWindow->MacIsReallyEnabled() )
                {
                    EventModifiers modifiers = cEvent.GetParameter<EventModifiers>(kEventParamKeyModifiers, typeUInt32) ;
                    Point clickLocation = windowMouseLocation ;

                    currentMouseWindow->MacRootWindowToWindow( &clickLocation.h , &clickLocation.v ) ;

                    HandleControlClick( (ControlRef) currentMouseWindow->GetHandle() , clickLocation ,
                        modifiers , (ControlActionUPP ) -1 ) ;

                    if ((currentMouseWindowParent != NULL) &&
                        (currentMouseWindowParent->GetChildren().Find(currentMouseWindow) == NULL))
                    {
                        currentMouseWindow = NULL;
                    }
                }

                result = noErr ;
            }
        }

        if ( cEvent.GetKind() == kEventMouseUp && wxApp::s_captureWindow )
        {
            wxApp::s_captureWindow = NULL ;
            // update cursor ?
         }

        // update cursor

        wxWindow* cursorTarget = currentMouseWindow ;
        wxPoint cursorPoint( wxevent.m_x , wxevent.m_y ) ;

        while ( cursorTarget && !cursorTarget->MacSetupCursor( cursorPoint ) )
        {
            cursorTarget = cursorTarget->GetParent() ;
            if ( cursorTarget )
                cursorPoint += cursorTarget->GetPosition();
        }

    }
    else // currentMouseWindow == NULL
    {
        // don't mess with controls we don't know about
        // for some reason returning eventNotHandledErr does not lead to the correct behaviour
        // so we try sending them the correct control directly
        if ( cEvent.GetKind() == kEventMouseDown && toplevelWindow && control )
        {
            EventModifiers modifiers = cEvent.GetParameter<EventModifiers>(kEventParamKeyModifiers, typeUInt32) ;
            Point clickLocation = windowMouseLocation ;
#if TARGET_API_MAC_OSX
            HIPoint hiPoint ;
            hiPoint.x = clickLocation.h ;
            hiPoint.y = clickLocation.v ;
            HIViewConvertPoint( &hiPoint , (ControlRef) toplevelWindow->GetHandle() , control  ) ;
            clickLocation.h = (int)hiPoint.x ;
            clickLocation.v = (int)hiPoint.y ;
#endif // TARGET_API_MAC_OSX

            HandleControlClick( control , clickLocation , modifiers , (ControlActionUPP ) -1 ) ;
            result = noErr ;
        }
    }

    return result ;
}

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

    wxMacCarbonEvent cEvent( event ) ;

    // WindowRef windowRef = cEvent.GetParameter<WindowRef>(kEventParamDirectObject) ;
    wxTopLevelWindowMac* toplevelWindow = (wxTopLevelWindowMac*) data ;

    switch ( GetEventKind( event ) )
    {
        case kEventWindowActivated :
        {
            toplevelWindow->MacActivate( cEvent.GetTicks() , true) ;
            wxActivateEvent wxevent(wxEVT_ACTIVATE, true , toplevelWindow->GetId());
            wxevent.SetTimestamp( cEvent.GetTicks() ) ;
            wxevent.SetEventObject(toplevelWindow);
            toplevelWindow->GetEventHandler()->ProcessEvent(wxevent);
            // we still sending an eventNotHandledErr in order to allow for default processing
        }
            break ;

        case kEventWindowDeactivated :
        {
            toplevelWindow->MacActivate(cEvent.GetTicks() , false) ;
            wxActivateEvent wxevent(wxEVT_ACTIVATE, false , toplevelWindow->GetId());
            wxevent.SetTimestamp( cEvent.GetTicks() ) ;
            wxevent.SetEventObject(toplevelWindow);
            toplevelWindow->GetEventHandler()->ProcessEvent(wxevent);
            // we still sending an eventNotHandledErr in order to allow for default processing
        }
            break ;

        case kEventWindowShown :
            toplevelWindow->Refresh() ;
            result = noErr ;
            break ;

        case kEventWindowClose :
            toplevelWindow->Close() ;
            result = noErr ;
            break ;

        case kEventWindowBoundsChanged :
        {
            UInt32 attributes = cEvent.GetParameter<UInt32>(kEventParamAttributes, typeUInt32) ;
            Rect newRect = cEvent.GetParameter<Rect>(kEventParamCurrentBounds) ;
            wxRect r( newRect.left , newRect.top , newRect.right - newRect.left , newRect.bottom - newRect.top ) ;
            if ( attributes & kWindowBoundsChangeSizeChanged )
            {
                // according to the other ports we handle this within the OS level
                // resize event, not within a wxSizeEvent
                wxFrame *frame = wxDynamicCast( toplevelWindow , wxFrame ) ;
                if ( frame )
                {
                    frame->PositionBars();
                }

                wxSizeEvent event( r.GetSize() , toplevelWindow->GetId() ) ;
                event.SetEventObject( toplevelWindow ) ;

                toplevelWindow->GetEventHandler()->ProcessEvent(event) ;
                toplevelWindow->wxWindowMac::MacSuperChangedPosition() ; // like this only children will be notified
            }

            if ( attributes & kWindowBoundsChangeOriginChanged )
            {
                wxMoveEvent event( r.GetLeftTop() , toplevelWindow->GetId() ) ;
                event.SetEventObject( toplevelWindow ) ;
                toplevelWindow->GetEventHandler()->ProcessEvent(event) ;
            }

            result = noErr ;
        }
            break ;

        case kEventWindowBoundsChanging :
        {
            UInt32 attributes = cEvent.GetParameter<UInt32>(kEventParamAttributes,typeUInt32) ;
            Rect newRect = cEvent.GetParameter<Rect>(kEventParamCurrentBounds) ;

            if ( (attributes & kWindowBoundsChangeSizeChanged) || (attributes & kWindowBoundsChangeOriginChanged) )
            {
                // all (Mac) rects are in content area coordinates, all wxRects in structure coordinates
                int left , top , right , bottom ;
                toplevelWindow->MacGetContentAreaInset( left , top , right , bottom ) ;

                wxRect r(
                    newRect.left - left,
                    newRect.top - top,
                    newRect.right - newRect.left + left + right,
                    newRect.bottom - newRect.top + top + bottom ) ;

                // this is a EVT_SIZING not a EVT_SIZE type !
                wxSizeEvent wxevent( r , toplevelWindow->GetId() ) ;
                wxevent.SetEventObject( toplevelWindow ) ;
                wxRect adjustR = r ;
                if ( toplevelWindow->GetEventHandler()->ProcessEvent(wxevent) )
                    adjustR = wxevent.GetRect() ;

                if ( toplevelWindow->GetMaxWidth() != -1 && adjustR.GetWidth() > toplevelWindow->GetMaxWidth() )
                    adjustR.SetWidth( toplevelWindow->GetMaxWidth() ) ;
                if ( toplevelWindow->GetMaxHeight() != -1 && adjustR.GetHeight() > toplevelWindow->GetMaxHeight() )
                    adjustR.SetHeight( toplevelWindow->GetMaxHeight() ) ;
                if ( toplevelWindow->GetMinWidth() != -1 && adjustR.GetWidth() < toplevelWindow->GetMinWidth() )
                    adjustR.SetWidth( toplevelWindow->GetMinWidth() ) ;
                if ( toplevelWindow->GetMinHeight() != -1 && adjustR.GetHeight() < toplevelWindow->GetMinHeight() )
                    adjustR.SetHeight( toplevelWindow->GetMinHeight() ) ;
                const Rect adjustedRect = { adjustR.y + top  , adjustR.x + left , adjustR.y + adjustR.height - bottom , adjustR.x + adjustR.width - right } ;
                if ( !EqualRect( &newRect , &adjustedRect ) )
                    cEvent.SetParameter<Rect>( kEventParamCurrentBounds , &adjustedRect ) ;
                toplevelWindow->wxWindowMac::MacSuperChangedPosition() ; // like this only children will be notified
            }

            result = noErr ;
        }
            break ;

        default :
            break ;
    }

    return result ;
}

// mix this in from window.cpp
pascal OSStatus wxMacUnicodeTextEventHandler( EventHandlerCallRef handler , EventRef event , void *data ) ;

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

    switch ( GetEventClass( event ) )
    {
        case kEventClassTextInput :
            result = wxMacUnicodeTextEventHandler( handler, event , data ) ;
            break ;

        case kEventClassKeyboard :
            result = KeyboardEventHandler( handler, event , data ) ;
            break ;

        case kEventClassWindow :
            result = wxMacTopLevelWindowEventHandler( handler, event , data ) ;
            break ;

        case kEventClassMouse :
            result = wxMacTopLevelMouseEventHandler( handler, event , data ) ;
            break ;

        default :
            break ;
    }

    return result ;
}

DEFINE_ONE_SHOT_HANDLER_GETTER( wxMacTopLevelEventHandler )

// ---------------------------------------------------------------------------
// wxWindowMac utility functions
// ---------------------------------------------------------------------------

// Find an item given the Macintosh Window Reference

WX_DECLARE_HASH_MAP(WindowRef, wxTopLevelWindowMac*, wxPointerHash, wxPointerEqual, MacWindowMap);

static MacWindowMap wxWinMacWindowList;

wxTopLevelWindowMac *wxFindWinFromMacWindow(WindowRef inWindowRef)
{
    MacWindowMap::iterator node = wxWinMacWindowList.find(inWindowRef);

    return (node == wxWinMacWindowList.end()) ? NULL : node->second;
}

void wxAssociateWinWithMacWindow(WindowRef inWindowRef, wxTopLevelWindowMac *win) ;
void wxAssociateWinWithMacWindow(WindowRef inWindowRef, wxTopLevelWindowMac *win)
{
    // adding NULL WindowRef is (first) surely a result of an error and
    // nothing else :-)
    wxCHECK_RET( inWindowRef != (WindowRef) NULL, wxT("attempt to add a NULL WindowRef to window list") );

    wxWinMacWindowList[inWindowRef] = win;
}

void wxRemoveMacWindowAssociation(wxTopLevelWindowMac *win) ;
void wxRemoveMacWindowAssociation(wxTopLevelWindowMac *win)
{
    MacWindowMap::iterator it;
    for ( it = wxWinMacWindowList.begin(); it != wxWinMacWindowList.end(); ++it )
    {
        if ( it->second == win )
        {
            wxWinMacWindowList.erase(it);
            break;
        }
    }
}

// ----------------------------------------------------------------------------
// wxTopLevelWindowMac creation
// ----------------------------------------------------------------------------

wxTopLevelWindowMac *wxTopLevelWindowMac::s_macDeactivateWindow = NULL;

typedef struct
{
    wxPoint m_position ;