toplevel.cpp

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

///////////////////////////////////////////////////////////////////////////////
// Name:        src/mac/carbon/toplevel.cpp
// Purpose:     implements wxTopLevelWindow for Mac
// Author:      Stefan Csomor
// Modified by:
// Created:     24.09.01
// RCS-ID:      $Id: toplevel.cpp,v 1.188 2006/10/19 00:22:11 KO Exp $
// Copyright:   (c) 2001-2004 Stefan Csomor
// License:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#include "wx/toplevel.h"

#ifndef WX_PRECOMP
    #include "wx/app.h"
    #include "wx/frame.h"
    #include "wx/string.h"
    #include "wx/log.h"
    #include "wx/intl.h"
    #include "wx/settings.h"
    #include "wx/strconv.h"
    #include "wx/control.h"
#endif //WX_PRECOMP

#include "wx/mac/uma.h"
#include "wx/mac/aga.h"
#include "wx/tooltip.h"
#include "wx/dnd.h"

#if wxUSE_SYSTEM_OPTIONS
    #include "wx/sysopt.h"
#endif

#ifndef __DARWIN__
#include <ToolUtils.h>
#endif

// for targeting OSX
#include "wx/mac/private.h"

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// trace mask for activation tracing messages
static const wxChar *TRACE_ACTIVATE = _T("activation");

// ----------------------------------------------------------------------------
// globals
// ----------------------------------------------------------------------------

// list of all frames and modeless dialogs
wxWindowList       wxModelessWindows;

static pascal long wxShapedMacWindowDef(short varCode, WindowRef window, SInt16 message, SInt32 param);

// ============================================================================
// wxTopLevelWindowMac implementation
// ============================================================================

BEGIN_EVENT_TABLE(wxTopLevelWindowMac, wxTopLevelWindowBase)
END_EVENT_TABLE()


// ---------------------------------------------------------------------------
// Carbon Events
// ---------------------------------------------------------------------------

static const EventTypeSpec eventList[] =
{
    // TODO: remove control related event like key and mouse (except for WindowLeave events)

    { kEventClassKeyboard, kEventRawKeyDown } ,
    { kEventClassKeyboard, kEventRawKeyRepeat } ,
    { kEventClassKeyboard, kEventRawKeyUp } ,
    { kEventClassKeyboard, kEventRawKeyModifiersChanged } ,

    { kEventClassTextInput, kEventTextInputUnicodeForKeyEvent } ,
    { kEventClassTextInput, kEventTextInputUpdateActiveInputArea } ,

    { kEventClassWindow , kEventWindowShown } ,
    { kEventClassWindow , kEventWindowActivated } ,
    { kEventClassWindow , kEventWindowDeactivated } ,
    { kEventClassWindow , kEventWindowBoundsChanging } ,
    { kEventClassWindow , kEventWindowBoundsChanged } ,
    { kEventClassWindow , kEventWindowClose } ,

    // we have to catch these events on the toplevel window level,
    // as controls don't get the raw mouse events anymore

    { kEventClassMouse , kEventMouseDown } ,
    { kEventClassMouse , kEventMouseUp } ,
    { kEventClassMouse , kEventMouseWheelMoved } ,
    { kEventClassMouse , kEventMouseMoved } ,
    { kEventClassMouse , kEventMouseDragged } ,
} ;

static pascal OSStatus KeyboardEventHandler( EventHandlerCallRef handler , EventRef event , void *data )
{
    OSStatus result = eventNotHandledErr ;
    // call DoFindFocus instead of FindFocus, because for Composite Windows(like WxGenericListCtrl)
    // FindFocus does not return the actual focus window, but the enclosing window
    wxWindow* focus = wxWindow::DoFindFocus();
    if ( focus == NULL )
        focus = (wxTopLevelWindowMac*) data ;

    unsigned char charCode ;
    wxChar uniChar[2] ;
    uniChar[0] = 0;
    uniChar[1] = 0;

    UInt32 keyCode ;
    UInt32 modifiers ;
    Point point ;
    UInt32 when = EventTimeToTicks( GetEventTime( event ) ) ;

#if wxUSE_UNICODE
    ByteCount dataSize = 0 ;
    if ( GetEventParameter( event, kEventParamKeyUnicodes, typeUnicodeText, NULL, 0 , &dataSize, NULL ) == noErr )
    {
        UniChar buf[2] ;
        int numChars = dataSize / sizeof( UniChar) + 1;

        UniChar* charBuf = buf ;

        if ( numChars * 2 > 4 )
            charBuf = new UniChar[ numChars ] ;
        GetEventParameter( event, kEventParamKeyUnicodes, typeUnicodeText, NULL, dataSize , NULL , charBuf ) ;
        charBuf[ numChars - 1 ] = 0;

#if SIZEOF_WCHAR_T == 2
        uniChar = charBuf[0] ;
#else
        wxMBConvUTF16 converter ;
        converter.MB2WC( uniChar , (const char*)charBuf , 2 ) ;
#endif

        if ( numChars * 2 > 4 )
            delete[] charBuf ;
    }
#endif

    GetEventParameter( event, kEventParamKeyMacCharCodes, typeChar, NULL, sizeof(char), NULL, &charCode );
    GetEventParameter( event, kEventParamKeyCode, typeUInt32, NULL, sizeof(UInt32), NULL, &keyCode );
    GetEventParameter( event, kEventParamKeyModifiers, typeUInt32, NULL, sizeof(UInt32), NULL, &modifiers );
    GetEventParameter( event, kEventParamMouseLocation, typeQDPoint, NULL, sizeof(Point), NULL, &point );

    UInt32 message = (keyCode << 8) + charCode;
    switch ( GetEventKind( event ) )
    {
        case kEventRawKeyRepeat :
        case kEventRawKeyDown :
            {
                WXEVENTREF formerEvent = wxTheApp->MacGetCurrentEvent() ;
                WXEVENTHANDLERCALLREF formerHandler = wxTheApp->MacGetCurrentEventHandlerCallRef() ;
                wxTheApp->MacSetCurrentEvent( event , handler ) ;
                if ( /* focus && */ wxTheApp->MacSendKeyDownEvent(
                    focus , message , modifiers , when , point.h , point.v , uniChar[0] ) )
                {
                    result = noErr ;
                }
                wxTheApp->MacSetCurrentEvent( formerEvent , formerHandler ) ;
            }
            break ;

        case kEventRawKeyUp :
            if ( /* focus && */ wxTheApp->MacSendKeyUpEvent(
                focus , message , modifiers , when , point.h , point.v , uniChar[0] ) )
            {
                result = noErr ;
            }
            break ;

        case kEventRawKeyModifiersChanged :
            {
                wxKeyEvent event(wxEVT_KEY_DOWN);

                event.m_shiftDown = modifiers & shiftKey;
                event.m_controlDown = modifiers & controlKey;
                event.m_altDown = modifiers & optionKey;
                event.m_metaDown = modifiers & cmdKey;
                event.m_x = point.h;
                event.m_y = point.v;

#if wxUSE_UNICODE
                event.m_uniChar = uniChar[0] ;
#endif

                event.SetTimestamp(when);
                event.SetEventObject(focus);

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

                wxApp::s_lastModifiers = modifiers ;
            }
            break ;

        default:
            break;
    }

    return result ;
}

// we don't interfere with foreign controls on our toplevel windows, therefore we always give back eventNotHandledErr
// for windows that we didn't create (like eg Scrollbars in a databrowser), or for controls where we did not handle the
// mouse down at all
//
// This handler can also be called from app level where data (ie target window) may be null or a non wx window

wxWindow* g_MacLastWindow = NULL ;

EventMouseButton g_lastButton = 0 ;

void SetupMouseEvent( wxMouseEvent &wxevent , wxMacCarbonEvent &cEvent )
{
    UInt32 modifiers = cEvent.GetParameter<UInt32>(kEventParamKeyModifiers, typeUInt32) ;
    Point screenMouseLocation = cEvent.GetParameter<Point>(kEventParamMouseLocation) ;

    // this parameter are not given for all events
    EventMouseButton button = 0 ;
    UInt32 clickCount = 0 ;
    cEvent.GetParameter<EventMouseButton>( kEventParamMouseButton, typeMouseButton , &button ) ;
    cEvent.GetParameter<UInt32>( kEventParamClickCount, typeUInt32 , &clickCount ) ;

    wxevent.m_x = screenMouseLocation.h;
    wxevent.m_y = screenMouseLocation.v;
    wxevent.m_shiftDown = modifiers & shiftKey;
    wxevent.m_controlDown = modifiers & controlKey;
    wxevent.m_altDown = modifiers & optionKey;
    wxevent.m_metaDown = modifiers & cmdKey;
    wxevent.SetTimestamp( cEvent.GetTicks() ) ;

   // a control click is interpreted as a right click
    if ( button == kEventMouseButtonPrimary && (modifiers & controlKey) )
        button = kEventMouseButtonSecondary ;

    // otherwise we report double clicks by connecting a left click with a ctrl-left click
    if ( clickCount > 1 && button != g_lastButton )
        clickCount = 1 ;

    // we must make sure that our synthetic 'right' button corresponds in
    // mouse down, moved and mouse up, and does not deliver a right down and left up

    if ( cEvent.GetKind() == kEventMouseDown )
        g_lastButton = button ;

    if ( button == 0 )
        g_lastButton = 0 ;
    else if ( g_lastButton )
        button = g_lastButton ;

    // determine the correct down state, wx does not want a 'down' for a mouseUp event,
    // while mac delivers this button
    if ( button != 0 && cEvent.GetKind() != kEventMouseUp )
    {
        switch ( button )
        {
            case kEventMouseButtonPrimary :
                wxevent.m_leftDown = true ;
                break ;

            case kEventMouseButtonSecondary :
                wxevent.m_rightDown = true ;
                break ;

            case kEventMouseButtonTertiary :
                wxevent.m_middleDown = true ;
                break ;

            default:
                break ;
        }
    }

    // translate into wx types
    switch ( cEvent.GetKind() )
    {
        case kEventMouseDown :
            switch ( button )
            {
                case kEventMouseButtonPrimary :
                    wxevent.SetEventType( clickCount > 1 ? wxEVT_LEFT_DCLICK : wxEVT_LEFT_DOWN )  ;
                    break ;

                case kEventMouseButtonSecondary :
                    wxevent.SetEventType( clickCount > 1 ? wxEVT_RIGHT_DCLICK : wxEVT_RIGHT_DOWN ) ;
                    break ;

                case kEventMouseButtonTertiary :
                    wxevent.SetEventType( clickCount > 1 ? wxEVT_MIDDLE_DCLICK : wxEVT_MIDDLE_DOWN ) ;
                    break ;

                default:
                    break ;
            }
            break ;

        case kEventMouseUp :
            switch ( button )
            {
                case kEventMouseButtonPrimary :
                    wxevent.SetEventType( wxEVT_LEFT_UP )  ;
                    break ;

                case kEventMouseButtonSecondary :
                    wxevent.SetEventType( wxEVT_RIGHT_UP ) ;
                    break ;

                case kEventMouseButtonTertiary :
                    wxevent.SetEventType( wxEVT_MIDDLE_UP ) ;
                    break ;

                default:
                    break ;
            }
            break ;

     case kEventMouseWheelMoved :
        {
            wxevent.SetEventType( wxEVT_MOUSEWHEEL ) ;

            // EventMouseWheelAxis axis = cEvent.GetParameter<EventMouseWheelAxis>(kEventParamMouseWheelAxis, typeMouseWheelAxis) ;
            SInt32 delta = cEvent.GetParameter<SInt32>(kEventParamMouseWheelDelta, typeSInt32) ;

            wxevent.m_wheelRotation = delta;
            wxevent.m_wheelDelta = 1;
            wxevent.m_linesPerAction = 1;
        }
        break ;

        default :
            wxevent.SetEventType( wxEVT_MOTION ) ;
            break ;
    }
}

ControlRef wxMacFindSubControl( wxTopLevelWindowMac* toplevelWindow, const Point& location , ControlRef superControl , ControlPartCode *outPart )
{
    if ( superControl )
    {
        UInt16 childrenCount = 0 ;
        ControlHandle sibling ;
        Rect r ;
        OSStatus err = CountSubControls( superControl , &childrenCount ) ;
        if ( err == errControlIsNotEmbedder )
            return NULL ;

        wxASSERT_MSG( err == noErr , wxT("Unexpected error when accessing subcontrols") ) ;

        for ( UInt16 i = childrenCount ; i >=1  ; --i )
        {
            err = GetIndexedSubControl( superControl , i , & sibling ) ;
            if ( err == errControlIsNotEmbedder )
                return NULL ;

            wxASSERT_MSG( err == noErr , wxT("Unexpected error when accessing subcontrols") ) ;
            if ( IsControlVisible( sibling ) )
            {
                UMAGetControlBoundsInWindowCoords( sibling , &r ) ;
                if ( MacPtInRect( location , &r ) )
                {
                    ControlHandle child = wxMacFindSubControl( toplevelWindow , location , sibling , outPart ) ;
                    if ( child )
                    {
                        return child ;
                    }
                    else
                    {
                        Point testLocation = location ;

                        if ( toplevelWindow )
                        {
                            testLocation.h -= r.left ;
                            testLocation.v -= r.top ;
                        }

                        *outPart = TestControl( sibling , testLocation ) ;

                        return sibling ;
                    }
                }
            }
        }
    }

    return NULL ;
}

ControlRef wxMacFindControlUnderMouse( wxTopLevelWindowMac* toplevelWindow , const Point& location , WindowRef window , ControlPartCode *outPart )
{
#if TARGET_API_MAC_OSX
    if ( UMAGetSystemVersion() >= 0x1030 )
        return FindControlUnderMouse( location , window , outPart ) ;
#endif

    ControlRef rootControl = NULL ;
    verify_noerr( GetRootControl( window , &rootControl ) ) ;

    return wxMacFindSubControl( toplevelWindow , location , rootControl , outPart ) ;
}

#define NEW_CAPTURE_HANDLING 1