non-pch build fix

[wxWidgets.git] / src / mac / carbon / uma.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/mac/carbon/uma.cpp
// Purpose:     UMA support
// Author:      Stefan Csomor
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Stefan Csomor
// Licence:     The wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#include "wx/mac/uma.h"

#if wxUSE_GUI

#include "wx/toplevel.h"
#include "wx/dc.h"

#ifndef __DARWIN__
#  include <MacTextEditor.h>
#  include <Navigation.h>
#  if defined(TARGET_CARBON)
#    if PM_USE_SESSION_APIS
#      include <PMCore.h>
#    endif
#    include <PMApplication.h>
#  else
#    include <Printing.h>
#  endif
#endif

#include "wx/mac/uma.h"

// since we have decided that we only support 8.6 upwards we are
// checking for these minimum requirements in the startup code of
// the application so all wxWidgets code can safely assume that appearance 1.1
// windows manager, control manager, navigation services etc. are
// present

static SInt32 sUMASystemVersion = 0 ;

long UMAGetSystemVersion() { return sUMASystemVersion ; }

void UMACleanupToolbox()
{
}

void UMAInitToolbox( UInt16 WXUNUSED(inMoreMastersCalls),
                     bool WXUNUSED(isEmbedded) )
{
    ::InitCursor();

    if ( Gestalt(gestaltSystemVersion, &sUMASystemVersion) != noErr)
        sUMASystemVersion = 0x0000 ;

#ifndef __LP64__
    {
        FontFamilyID fontId ;
        Str255 fontName ;
        SInt16 fontSize ;
        Style fontStyle ;

        GetThemeFont(kThemeSmallSystemFont , GetApplicationScript() , fontName , &fontSize , &fontStyle ) ;
        GetFNum( fontName, &fontId );

        TXNMacOSPreferredFontDescription fontDescriptions[] =
        {
            { fontId , (fontSize << 16) , kTXNDefaultFontStyle, kTXNSystemDefaultEncoding }
        } ;
        int noOfFontDescriptions = sizeof( fontDescriptions ) / sizeof(TXNMacOSPreferredFontDescription) ;

        OptionBits options = 0 ;

        if ( UMAGetSystemVersion() < 0x1000 )
            options |= kTXNAlwaysUseQuickDrawTextMask ;

        TXNInitTextension( fontDescriptions,  noOfFontDescriptions, options );
    }
#endif

    UMASetSystemIsInitialized( true );
}

// process manager
long UMAGetProcessMode()
{
    OSErr err ;
    ProcessInfoRec processinfo;
    ProcessSerialNumber procno ;

    procno.highLongOfPSN = 0 ;
    procno.lowLongOfPSN = kCurrentProcess ;
    processinfo.processInfoLength = sizeof(ProcessInfoRec);
    processinfo.processName = NULL;
#ifndef __LP64__
    processinfo.processAppSpec = NULL;
#endif

    err = ::GetProcessInformation( &procno , &processinfo ) ;
    wxASSERT( err == noErr ) ;

    return processinfo.processMode ;
}

bool UMAGetProcessModeDoesActivateOnFGSwitch()
{
    return UMAGetProcessMode() & modeDoesActivateOnFGSwitch ;
}

// menu manager

MenuRef UMANewMenu( SInt16 id , const wxString& title , wxFontEncoding encoding )
{
    wxString str = wxStripMenuCodes( title ) ;
    MenuRef menu ;

#if TARGET_CARBON
    CreateNewMenu( id , 0 , &menu ) ;
    SetMenuTitleWithCFString( menu , wxMacCFStringHolder(str , encoding ) ) ;
#else
    Str255 ptitle ;
    wxMacStringToPascal( str , ptitle ) ;
    menu = ::NewMenu( id , ptitle ) ;
#endif

    return menu ;
}

void UMASetMenuTitle( MenuRef menu , const wxString& title , wxFontEncoding encoding )
{
    wxString str = wxStripMenuCodes( title ) ;

#if TARGET_CARBON
    SetMenuTitleWithCFString( menu , wxMacCFStringHolder(str , encoding) ) ;

#else
    Str255 ptitle ;
    wxMacStringToPascal( str , ptitle ) ;
    SetMenuTitle( menu , ptitle ) ;
#endif
}

void UMASetMenuItemText( MenuRef menu,  MenuItemIndex item, const wxString& title, wxFontEncoding encoding )
{
    // we don't strip the accels here anymore, must be done before
    wxString str = title ;

#if TARGET_CARBON
    SetMenuItemTextWithCFString( menu , item , wxMacCFStringHolder(str , encoding) ) ;

#else
    Str255 ptitle ;
    wxMacStringToPascal( str , ptitle ) ;
    SetMenuItemText( menu , item , ptitle ) ;
#endif
}

UInt32 UMAMenuEvent( EventRecord *inEvent )
{
    return MenuEvent( inEvent ) ;
}

void UMAEnableMenuItem( MenuRef inMenu , MenuItemIndex inItem , bool enable)
{
    if ( enable )
        EnableMenuItem( inMenu , inItem ) ;
    else
        DisableMenuItem( inMenu , inItem ) ;
}

void UMAAppendSubMenuItem( MenuRef menu , const wxString& title, wxFontEncoding encoding , SInt16 id )
{
    AppendMenuItemTextWithCFString( menu,
                                CFSTR("A"), 0, 0,NULL); 
    UMASetMenuItemText( menu, (SInt16) ::CountMenuItems(menu), title , encoding );
    SetMenuItemHierarchicalID( menu , CountMenuItems( menu ) , id ) ;
}

void UMAInsertSubMenuItem( MenuRef menu , const wxString& title, wxFontEncoding encoding , MenuItemIndex item , SInt16 id  )
{
    InsertMenuItemTextWithCFString( menu,
                CFSTR("A"), item, 0, 0); 
                
    UMASetMenuItemText( menu, item+1, title , encoding );
    SetMenuItemHierarchicalID( menu , item+1 , id ) ;
}

void UMASetMenuItemShortcut( MenuRef menu , MenuItemIndex item , wxAcceleratorEntry *entry )
{
    if ( !entry )
        return ;

    UInt8 modifiers = 0 ;
    SInt16 key = entry->GetKeyCode() ;
    if ( key )
    {
        bool explicitCommandKey = (entry->GetFlags() & wxACCEL_CTRL);

        if (entry->GetFlags() & wxACCEL_ALT)
            modifiers |= kMenuOptionModifier ;

        if (entry->GetFlags() & wxACCEL_SHIFT)
            modifiers |= kMenuShiftModifier ;

        SInt16 glyph = 0 ;
        SInt16 macKey = key ;
        if ( key >= WXK_F1 && key <= WXK_F15 )
        {
            if ( !explicitCommandKey )
                modifiers |= kMenuNoCommandModifier ;

            // for some reasons this must be 0 right now
            // everything else leads to just the first function key item
            // to be selected. Thanks to Ryan Wilcox for finding out.
            macKey = 0 ;
            glyph = kMenuF1Glyph + ( key - WXK_F1 ) ;
            if ( key >= WXK_F13 )
                glyph += 12 ;
        }
        else
        {
            switch ( key )
            {
                case WXK_BACK :
                    macKey = kBackspaceCharCode ;
                    glyph = kMenuDeleteLeftGlyph ;
                    break ;

                case WXK_TAB :
                    macKey = kTabCharCode ;
                    glyph = kMenuTabRightGlyph ;
                    break ;

                case kEnterCharCode :
                    macKey = kEnterCharCode ;
                    glyph = kMenuEnterGlyph ;
                    break ;

                case WXK_RETURN :
                    macKey = kReturnCharCode ;
                    glyph = kMenuReturnGlyph ;
                    break ;

                case WXK_ESCAPE :
                    macKey = kEscapeCharCode ;
                    glyph = kMenuEscapeGlyph ;
                    break ;

                case WXK_SPACE :
                    macKey = ' ' ;
                    glyph = kMenuSpaceGlyph ;
                    break ;

                case WXK_DELETE :
                    macKey = kDeleteCharCode ;
                    glyph = kMenuDeleteRightGlyph ;
                    break ;

                case WXK_CLEAR :
                    macKey = kClearCharCode ;
                    glyph = kMenuClearGlyph ;
                    break ;

                case WXK_PAGEUP :
                    macKey = kPageUpCharCode ;
                    glyph = kMenuPageUpGlyph ;
                    break ;

                case WXK_PAGEDOWN :
                    macKey = kPageDownCharCode ;
                    glyph = kMenuPageDownGlyph ;
                    break ;

                case WXK_LEFT :
                    macKey = kLeftArrowCharCode ;
                    glyph = kMenuLeftArrowGlyph ;
                    break ;

                case WXK_UP :
                    macKey = kUpArrowCharCode ;
                    glyph = kMenuUpArrowGlyph ;
                    break ;

                case WXK_RIGHT :
                    macKey = kRightArrowCharCode ;
                    glyph = kMenuRightArrowGlyph ;
                    break ;

                case WXK_DOWN :
                    macKey = kDownArrowCharCode ;
                    glyph = kMenuDownArrowGlyph ;
                    break ;

                case WXK_HOME :
                    macKey = kHomeCharCode ;
                    glyph = kMenuNorthwestArrowGlyph ;
                    break ;

                case WXK_END :
                    macKey = kEndCharCode ;
                    glyph = kMenuSoutheastArrowGlyph ;
                    break ;
                default :
                    macKey = toupper( key ) ;
                    break ;
            }

            // we now allow non command key shortcuts
            // remove in case this gives problems
            if ( !explicitCommandKey )
                modifiers |= kMenuNoCommandModifier ;
        }

        // 1d and 1e have special meaning to SetItemCmd, so
        // do not use for these character codes.
        if (key != WXK_UP && key != WXK_RIGHT && key != WXK_DOWN && key != WXK_LEFT)
            SetItemCmd( menu, item , macKey );

        SetMenuItemModifiers( menu, item , modifiers ) ;

        if ( glyph )
            SetMenuItemKeyGlyph( menu, item , glyph ) ;
    }
}

void UMAAppendMenuItem( MenuRef menu , const wxString& title, wxFontEncoding encoding , wxAcceleratorEntry *entry )
{
    AppendMenuItemTextWithCFString( menu,
                                CFSTR("A"), 0, 0,NULL); 
    // don't attempt to interpret metacharacters like a '-' at the beginning (would become a separator otherwise)
    ChangeMenuItemAttributes( menu , ::CountMenuItems(menu), kMenuItemAttrIgnoreMeta , 0 ) ;
    UMASetMenuItemText(menu, (SInt16) ::CountMenuItems(menu), title , encoding );
    UMASetMenuItemShortcut( menu , (SInt16) ::CountMenuItems(menu), entry ) ;
}

void UMAInsertMenuItem( MenuRef menu , const wxString& title, wxFontEncoding encoding , MenuItemIndex item , wxAcceleratorEntry *entry )
{
    InsertMenuItemTextWithCFString( menu,
                CFSTR("A"), item, 0, 0); 

    // don't attempt to interpret metacharacters like a '-' at the beginning (would become a separator otherwise)
    ChangeMenuItemAttributes( menu , item+1, kMenuItemAttrIgnoreMeta , 0 ) ;
    UMASetMenuItemText(menu, item+1 , title , encoding );
    UMASetMenuItemShortcut( menu , item+1 , entry ) ;
}

// quickdraw

#if !TARGET_CARBON

int gPrOpenCounter = 0 ;

OSStatus UMAPrOpen()
{
    OSErr err = noErr ;

    ++gPrOpenCounter ;

    if ( gPrOpenCounter == 1 )
    {
        PrOpen() ;
        err = PrError() ;
        wxASSERT( err == noErr ) ;
    }

    return err ;
}

OSStatus UMAPrClose()
{
    OSErr err = noErr ;

    wxASSERT( gPrOpenCounter >= 1 ) ;

    if ( gPrOpenCounter == 1 )
    {
        PrClose() ;
        err = PrError() ;
        wxASSERT( err == noErr ) ;
    }

    --gPrOpenCounter ;

    return err ;
}

pascal QDGlobalsPtr GetQDGlobalsPtr() ;
pascal QDGlobalsPtr GetQDGlobalsPtr()
{
    return QDGlobalsPtr (* (Ptr*) LMGetCurrentA5 ( ) - 0xCA);
}

#endif

void UMAShowWatchCursor()
{
    SetThemeCursor(kThemeWatchCursor);
}

void UMAShowArrowCursor()
{
    SetThemeCursor(kThemeArrowCursor);
}

// window manager

GrafPtr UMAGetWindowPort( WindowRef inWindowRef )
{
    wxASSERT( inWindowRef != NULL ) ;

#if TARGET_CARBON
    return (GrafPtr) GetWindowPort( inWindowRef ) ;
#else
    return (GrafPtr) inWindowRef ;
#endif
}

void UMADisposeWindow( WindowRef inWindowRef )
{
    wxASSERT( inWindowRef != NULL ) ;

    DisposeWindow( inWindowRef ) ;
}

void UMASetWTitle( WindowRef inWindowRef , const wxString& title , wxFontEncoding encoding )
{
#if TARGET_CARBON
    SetWindowTitleWithCFString( inWindowRef , wxMacCFStringHolder(title , encoding) ) ;

#else
    Str255 ptitle ;
    wxMacStringToPascal( title , ptitle ) ;
    SetWTitle( inWindowRef , ptitle ) ;
#endif
}

// appearance additions

void UMASetControlTitle( ControlRef inControl , const wxString& title , wxFontEncoding encoding )
{
#if TARGET_CARBON
    SetControlTitleWithCFString( inControl , wxMacCFStringHolder(title , encoding) ) ;

#else
    Str255 ptitle ;
    wxMacStringToPascal( title , ptitle ) ;
    SetControlTitle( inControl , ptitle ) ;
#endif
}

void UMAActivateControl( ControlRef inControl )
{
#if TARGET_API_MAC_OSX
    ::ActivateControl( inControl ) ;

#else
    // we have to add the control after again to the update rgn
    // otherwise updates get lost
    if ( !IsControlActive( inControl ) )
    {
        bool visible = IsControlVisible( inControl ) ;
        if ( visible )
            SetControlVisibility( inControl , false , false ) ;

        ::ActivateControl( inControl ) ;

        if ( visible )
        {
            SetControlVisibility( inControl , true , false ) ;

            Rect ctrlBounds ;
            InvalWindowRect( GetControlOwner(inControl), UMAGetControlBoundsInWindowCoords(inControl, &ctrlBounds) ) ;
        }
    }
#endif
}

void UMAMoveControl( ControlRef inControl , short x , short y )
{
#if TARGET_API_MAC_OSX
    ::MoveControl( inControl , x , y ) ;

#else
    bool visible = IsControlVisible( inControl ) ;
    if ( visible )
    {
        SetControlVisibility( inControl , false , false ) ;
        Rect ctrlBounds ;
        InvalWindowRect( GetControlOwner(inControl), GetControlBounds(inControl, &ctrlBounds) ) ;
    }

    ::MoveControl( inControl , x , y ) ;

    if ( visible )
    {
        SetControlVisibility( inControl , true , false ) ;
        Rect ctrlBounds ;
        InvalWindowRect( GetControlOwner(inControl), GetControlBounds(inControl, &ctrlBounds) ) ;
    }
#endif
}

void UMASizeControl( ControlRef inControl , short x , short y )
{
#if TARGET_API_MAC_OSX
    ::SizeControl( inControl , x , y ) ;

#else
    bool visible = IsControlVisible( inControl ) ;
    if ( visible )
    {
        SetControlVisibility( inControl , false , false ) ;
        Rect ctrlBounds ;
        InvalWindowRect( GetControlOwner(inControl), GetControlBounds(inControl, &ctrlBounds) ) ;
    }

    ::SizeControl( inControl , x , y ) ;

    if ( visible )
    {
        SetControlVisibility( inControl , true , false ) ;
        Rect ctrlBounds ;
        InvalWindowRect( GetControlOwner(inControl), GetControlBounds(inControl, &ctrlBounds) ) ;
    }
#endif
}

void UMADeactivateControl( ControlRef inControl )
{
#if TARGET_API_MAC_OSX
    ::DeactivateControl( inControl ) ;

#else
    // we have to add the control after again to the update rgn
    // otherwise updates get lost
    bool visible = IsControlVisible( inControl ) ;
    if ( visible )
        SetControlVisibility( inControl , false , false ) ;

    ::DeactivateControl( inControl ) ;

    if ( visible )
    {
        SetControlVisibility( inControl , true , false ) ;
        Rect ctrlBounds ;
        InvalWindowRect( GetControlOwner(inControl), UMAGetControlBoundsInWindowCoords(inControl, &ctrlBounds) ) ;
    }
#endif
}

// shows the control and adds the region to the update region
void UMAShowControl( ControlRef inControl )
{
    SetControlVisibility( inControl , true , false ) ;
    HIViewSetNeedsDisplay( inControl, true );
}

// hides the control and adds the region to the update region
void UMAHideControl( ControlRef inControl )
{
    SetControlVisibility( inControl , false , false ) ;
    HIViewSetNeedsDisplay( inControl, true );
}

// keyboard focus
OSErr UMASetKeyboardFocus( WindowPtr inWindow,
                                 ControlRef inControl,
                                 ControlFocusPart inPart )
{
    OSErr err = noErr;
#ifndef __LP64__
    GrafPtr port ;

    GetPort( &port ) ;
    SetPortWindowPort( inWindow ) ;
#endif

    err = SetKeyboardFocus( inWindow , inControl , inPart ) ;
#ifndef __LP64__
    SetPort( port ) ;
#endif

    return err ;
}

bool UMAIsWindowFloating( WindowRef inWindow )
{
    WindowClass cl ;

    GetWindowClass( inWindow , &cl ) ;
    return cl == kFloatingWindowClass ;
}

bool UMAIsWindowModal( WindowRef inWindow )
{
    WindowClass cl ;

    GetWindowClass( inWindow , &cl ) ;
    return cl < kFloatingWindowClass ;
}

// others

void UMAHighlightAndActivateWindow( WindowRef inWindowRef , bool inActivate )
{
    if ( inWindowRef )
    {
//        bool isHighlighted = IsWindowHighlited( inWindowRef ) ;
//        if ( inActivate != isHighlighted )
#ifndef __LP64__
        GrafPtr port ;
        GetPort( &port ) ;
        SetPortWindowPort( inWindowRef ) ;
#endif
        HiliteWindow( inWindowRef , inActivate ) ;
        ControlRef control = NULL ;
        ::GetRootControl( inWindowRef , &control ) ;
        if ( control )
        {
            if ( inActivate )
                UMAActivateControl( control ) ;
            else
                UMADeactivateControl( control ) ;
        }
#ifndef __LP64__
        SetPort( port ) ;
#endif
    }
}

OSStatus UMADrawThemePlacard( const Rect *inRect , ThemeDrawState inState )
{
#ifndef __LP64__
    return ::DrawThemePlacard( inRect , inState ) ;
#else
    return noErr;
#endif
}

#if !TARGET_CARBON
static OSStatus helpMenuStatus = noErr ;
static MenuItemIndex firstCustomItemIndex = 0 ;
#endif

static OSStatus UMAGetHelpMenu(
    MenuRef *        outHelpMenu,
    MenuItemIndex *  outFirstCustomItemIndex,
    bool             allowHelpMenuCreation);

static OSStatus UMAGetHelpMenu(
    MenuRef *        outHelpMenu,
    MenuItemIndex *  outFirstCustomItemIndex,
    bool             allowHelpMenuCreation)
{
#if TARGET_CARBON
    static bool s_createdHelpMenu = false ;

    if ( !s_createdHelpMenu && !allowHelpMenuCreation )
    {
        return paramErr ;
    }

    OSStatus status = HMGetHelpMenu( outHelpMenu , outFirstCustomItemIndex ) ;
    s_createdHelpMenu = ( status == noErr ) ;
    return status ;
#else
    wxUnusedVar( allowHelpMenuCreation ) ;
    MenuRef helpMenuHandle ;

    helpMenuStatus = HMGetHelpMenuHandle( &helpMenuHandle ) ;
    if ( firstCustomItemIndex == 0 && helpMenuStatus == noErr )
        firstCustomItemIndex = CountMenuItems( helpMenuHandle ) + 1 ;

    if ( outFirstCustomItemIndex )
        *outFirstCustomItemIndex = firstCustomItemIndex ;

    *outHelpMenu = helpMenuHandle ;

    return helpMenuStatus ;
#endif
}

OSStatus UMAGetHelpMenu(
    MenuRef *        outHelpMenu,
    MenuItemIndex *  outFirstCustomItemIndex)
{
    return UMAGetHelpMenu( outHelpMenu , outFirstCustomItemIndex , true );
}

OSStatus UMAGetHelpMenuDontCreate(
    MenuRef *        outHelpMenu,
    MenuItemIndex *  outFirstCustomItemIndex)
{
    return UMAGetHelpMenu( outHelpMenu , outFirstCustomItemIndex , false );
}

#ifndef __LP64__

wxMacPortStateHelper::wxMacPortStateHelper( GrafPtr newport )
{
    m_clip = NULL ;
    Setup( newport ) ;
}

wxMacPortStateHelper::wxMacPortStateHelper()
{
    m_clip = NULL ;
}

void wxMacPortStateHelper::Setup( GrafPtr newport )
{
    GetPort( &m_oldPort ) ;
    SetPort( newport ) ;
    SetOrigin(0, 0);

    wxASSERT_MSG( m_clip == NULL , wxT("Cannot call setup twice") ) ;
    m_clip = NewRgn() ;
    GetClip( m_clip );
    m_textFont = GetPortTextFont( (CGrafPtr) newport );
    m_textSize = GetPortTextSize( (CGrafPtr) newport );
    m_textStyle = GetPortTextFace( (CGrafPtr) newport );
    m_textMode = GetPortTextMode( (CGrafPtr) newport );
    GetThemeDrawingState( &m_drawingState ) ;
    m_currentPort = newport ;
}

void wxMacPortStateHelper::Clear()
{
    if ( m_clip )
    {
        DisposeRgn( m_clip ) ;
        DisposeThemeDrawingState( m_drawingState ) ;
        m_clip = NULL ;
    }
}

wxMacPortStateHelper::~wxMacPortStateHelper()
{
    if ( m_clip )
    {
        SetPort( m_currentPort ) ;
        SetClip( m_clip ) ;
        DisposeRgn( m_clip ) ;
        TextFont( m_textFont );
        TextSize( m_textSize );
        TextFace( m_textStyle );
        TextMode( m_textMode );
        SetThemeDrawingState( m_drawingState , true ) ;
        SetPort( m_oldPort ) ;
    }
}

#endif

Rect * UMAGetControlBoundsInWindowCoords( ControlRef theControl, Rect *bounds )
{
    GetControlBounds( theControl , bounds ) ;

#if TARGET_API_MAC_OSX
    WindowRef tlwref = GetControlOwner( theControl ) ;

    wxTopLevelWindowMac* tlwwx = wxFindWinFromMacWindow( tlwref ) ;
    if ( tlwwx != NULL )
    {
        ControlRef rootControl = tlwwx->GetPeer()->GetControlRef() ;
        HIPoint hiPoint = CGPointMake( 0 , 0 ) ;
        HIViewConvertPoint( &hiPoint , HIViewGetSuperview(theControl) , rootControl ) ;
        OffsetRect( bounds , (short) hiPoint.x , (short) hiPoint.y ) ;
    }
#endif

    return bounds ;
}

size_t UMAPutBytesCFRefCallback( void *info, const void *bytes, size_t count )
{
    CFMutableDataRef data = (CFMutableDataRef) info;
    if ( data )
    {
        CFDataAppendBytes( data, (const UInt8*) bytes, count );
    }
    return count;
}

void UMAReleaseCFDataProviderCallback( void *info, const void *data, size_t count )
{
    if ( info )
        CFRelease( (CFDataRef) info );
}

void UMAReleaseCFDataConsumerCallback( void *info )
{
    if ( info )
        CFRelease( (CFDataRef) info );
}

CGDataProviderRef UMACGDataProviderCreateWithCFData( CFDataRef data )
{
    if ( data == NULL )
        return NULL;
        
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
    if( &CGDataProviderCreateWithCFData != NULL )
    {
        return CGDataProviderCreateWithCFData( data );
    }
#endif

    // make sure we keep it until done
    CFRetain( data );
    CGDataProviderRef provider = CGDataProviderCreateWithData( (void*) data , CFDataGetBytePtr( data ) ,
        CFDataGetLength( data ), UMAReleaseCFDataProviderCallback );
    // if provider couldn't be created, release the data again
    if ( provider == NULL )
        CFRelease( data );
    return provider;
}

CGDataConsumerRef UMACGDataConsumerCreateWithCFData( CFMutableDataRef data )
{
    if ( data == NULL )
        return NULL;
        
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
    if( &CGDataConsumerCreateWithCFData != NULL )
    {
        return CGDataConsumerCreateWithCFData( data );
    }
#endif
    // make sure we keep it until done
    CFRetain( data );
    CGDataConsumerCallbacks callbacks;
    callbacks.putBytes = UMAPutBytesCFRefCallback;
    callbacks.releaseConsumer = UMAReleaseCFDataConsumerCallback;
    CGDataConsumerRef consumer = CGDataConsumerCreate( data , &callbacks );
    // if consumer couldn't be created, release the data again
    if ( consumer == NULL )
        CFRelease( data );
    return consumer;
}
#endif  // wxUSE_GUI

#if wxUSE_BASE

static bool sUMASystemInitialized = false ;

bool UMASystemIsInitialized()
{
    return sUMASystemInitialized ;
}

void UMASetSystemIsInitialized(bool val)
{
    sUMASystemInitialized = val;
}

#endif // wxUSE_BASE