utils.cpp

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

// Restore cursor to normal
void wxEndBusyCursor()
{
    wxCHECK_RET( gs_wxBusyCursorCount > 0,
        wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );

    if (--gs_wxBusyCursorCount == 0)
    {
        gMacStoredActiveCursor.MacInstall();
        gMacStoredActiveCursor = wxNullCursor;
    }
}

// true if we're between the above two calls
bool wxIsBusy()
{
    return (gs_wxBusyCursorCount > 0);
}

#endif // wxUSE_GUI

#if wxUSE_BASE

wxString wxMacFindFolderNoSeparator( short        vol,
              OSType       folderType,
              Boolean      createFolder)
{
    FSRef fsRef;
    wxString strDir;

    if ( FSFindFolder( vol, folderType, createFolder, &fsRef) == noErr)
    {
        strDir = wxMacFSRefToPath( &fsRef );
    }

    return strDir;
}

wxString wxMacFindFolder( short        vol,
              OSType       folderType,
              Boolean      createFolder)
{
    return wxMacFindFolderNoSeparator(vol, folderType, createFolder) + wxFILE_SEP_PATH;
}

#endif // wxUSE_BASE

#if wxUSE_GUI

// Check whether this window wants to process messages, e.g. Stop button
// in long calculations.
bool wxCheckForInterrupt(wxWindow *wnd)
{
    // TODO
    return false;
}

void wxGetMousePosition( int* x, int* y )
{
    Point pt;
#if wxMAC_USE_CORE_GRAPHICS
    GetGlobalMouse(&pt);
#else
    GetMouse( &pt );
    LocalToGlobal( &pt );
#endif
    *x = pt.h;
    *y = pt.v;
};

// Return true if we have a colour display
bool wxColourDisplay()
{
    return true;
}

// Returns depth of screen
int wxDisplayDepth()
{
    int theDepth = 8;
#if wxMAC_USE_CORE_GRAPHICS
    theDepth = (int) CGDisplayBitsPerPixel(CGMainDisplayID());
#else
    Rect globRect;
    SetRect(&globRect, -32760, -32760, 32760, 32760);
    GDHandle    theMaxDevice;

    theMaxDevice = GetMaxDevice(&globRect);
    if (theMaxDevice != NULL)
        theDepth = (**(**theMaxDevice).gdPMap).pixelSize;
#endif
    return theDepth;
}

// Get size of display
void wxDisplaySize(int *width, int *height)
{
#if wxMAC_USE_CORE_GRAPHICS
    // TODO adapt for multi-displays
    CGRect bounds = CGDisplayBounds(CGMainDisplayID());
    if ( width )
        *width = (int)bounds.size.width ;
    if ( height )
        *height = (int)bounds.size.height;
#else
    BitMap screenBits;
    GetQDGlobalsScreenBits( &screenBits );

    if (width != NULL)
        *width = screenBits.bounds.right - screenBits.bounds.left;

    if (height != NULL)
        *height = screenBits.bounds.bottom - screenBits.bounds.top;
#endif
}

void wxDisplaySizeMM(int *width, int *height)
{
    wxDisplaySize(width, height);
    // on mac 72 is fixed (at least now;-)
    float cvPt2Mm = 25.4 / 72;

    if (width != NULL)
        *width = int( *width * cvPt2Mm );

    if (height != NULL)
        *height = int( *height * cvPt2Mm );
}

void wxClientDisplayRect(int *x, int *y, int *width, int *height)
{
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5
        HIRect bounds ;
        HIWindowGetAvailablePositioningBounds(kCGNullDirectDisplay,kHICoordSpace72DPIGlobal,
            &bounds);
    if ( x )
        *x = bounds.origin.x;
    if ( y )
        *y = bounds.origin.y;
    if ( width )
        *width = bounds.size.width;
    if ( height )
        *height = bounds.size.height;
#else
    Rect r;
    GetAvailableWindowPositioningBounds( GetMainDevice() , &r );
    if ( x )
        *x = r.left;
    if ( y )
        *y = r.top;
    if ( width )
        *width = r.right - r.left;
    if ( height )
        *height = r.bottom - r.top;
#endif
}

wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
{
    return wxGenericFindWindowAtPoint(pt);
}

#endif // wxUSE_GUI

#if wxUSE_BASE

wxString wxGetOsDescription()
{
#ifdef WXWIN_OS_DESCRIPTION
    // use configure generated description if available
    return wxString(wxT("MacOS (")) + wxT(WXWIN_OS_DESCRIPTION) + wxString(wxT(")"));
#else
    return wxT("MacOS"); //TODO:define further
#endif
}

#ifndef __DARWIN__
wxChar *wxGetUserHome (const wxString& user)
{
    // TODO
    return NULL;
}

bool wxGetDiskSpace(const wxString& path, wxDiskspaceSize_t *pTotal, wxDiskspaceSize_t *pFree)
{
    if ( path.empty() )
        return false;

    wxString p = path;
    if (p[0u] == ':' )
      p = wxGetCwd() + p;

    int pos = p.Find(':');
    if ( pos != wxNOT_FOUND )
      p = p.Mid(1,pos);

    p = p + wxT(":");

    OSErr err = noErr;

    FSRef fsRef;
    err = wxMacPathToFSRef( p , &fsRef );
    if ( noErr == err )
    {
        FSVolumeRefNum vRefNum;
        err = FSGetVRefNum( &fsRef , &vRefNum );
        if ( noErr == err )
        {
            UInt64 freeBytes , totalBytes;
            err = FSGetVInfo( vRefNum , NULL , &freeBytes , &totalBytes );
            if ( noErr == err )
            {
                if ( pTotal )
                    *pTotal = wxDiskspaceSize_t( totalBytes );
                if ( pFree )
                    *pFree = wxDiskspaceSize_t( freeBytes );
            }
        }
    }

    return err == noErr;
}
#endif // !__DARWIN__

//---------------------------------------------------------------------------
// wxMac Specific utility functions
//---------------------------------------------------------------------------

void wxMacStringToPascal( const wxString&from , StringPtr to )
{
    wxCharBuffer buf = from.mb_str( wxConvLocal );
    int len = strlen(buf);

    if ( len > 255 )
        len = 255;
    to[0] = len;
    memcpy( (char*) &to[1] , buf , len );
}

wxString wxMacMakeStringFromPascal( ConstStringPtr from )
{
    return wxString( (char*) &from[1] , wxConvLocal , from[0] );
}

// ----------------------------------------------------------------------------
// Common Event Support
// ----------------------------------------------------------------------------

extern ProcessSerialNumber gAppProcess;

void wxMacWakeUp()
{
    ProcessSerialNumber psn;
    Boolean isSame;
    psn.highLongOfPSN = 0;
    psn.lowLongOfPSN = kCurrentProcess;
    SameProcess( &gAppProcess , &psn , &isSame );
    if ( isSame )
    {
#if TARGET_CARBON
        OSStatus err = noErr;

#if 0
        // lead sometimes to race conditions, although all calls used should be thread safe ...
        static wxMacCarbonEvent s_wakeupEvent;
        if ( !s_wakeupEvent.IsValid() )
        {
           err = s_wakeupEvent.Create( 'WXMC', 'WXMC', GetCurrentEventTime(),
                        kEventAttributeNone );
        }
        if ( err == noErr )
        {

            if ( IsEventInQueue( GetMainEventQueue() , s_wakeupEvent ) )
                return;
            s_wakeupEvent.SetCurrentTime();
            err = PostEventToQueue(GetMainEventQueue(), s_wakeupEvent,
                                  kEventPriorityHigh );
        }
#else
        wxMacCarbonEvent wakeupEvent;
        wakeupEvent.Create( 'WXMC', 'WXMC', GetCurrentEventTime(),
                            kEventAttributeNone );
        err = PostEventToQueue(GetMainEventQueue(), wakeupEvent,
                               kEventPriorityHigh );
#endif
#else
        PostEvent( nullEvent , 0 );
#endif
    }
    else
    {
        WakeUpProcess( &gAppProcess );
    }
}

#endif // wxUSE_BASE

#if wxUSE_GUI

// ----------------------------------------------------------------------------
// Native Struct Conversions
// ----------------------------------------------------------------------------

void wxMacRectToNative( const wxRect *wx , Rect *n )
{
    n->left = wx->x;
    n->top = wx->y;
    n->right = wx->x + wx->width;
    n->bottom = wx->y + wx->height;
}

void wxMacNativeToRect( const Rect *n , wxRect* wx )
{
    wx->x = n->left;
    wx->y = n->top;
    wx->width = n->right - n->left;
    wx->height = n->bottom - n->top;
}

void wxMacPointToNative( const wxPoint* wx , Point *n )
{
    n->h = wx->x;
    n->v = wx->y;
}

void wxMacNativeToPoint( const Point *n , wxPoint* wx )
{
    wx->x = n->h;
    wx->y = n->v;
}

// ----------------------------------------------------------------------------
// Carbon Event Support
// ----------------------------------------------------------------------------

OSStatus wxMacCarbonEvent::GetParameter(EventParamName inName, EventParamType inDesiredType, UInt32 inBufferSize, void * outData)
{
    return ::GetEventParameter( m_eventRef , inName , inDesiredType , NULL , inBufferSize , NULL , outData );
}

OSStatus wxMacCarbonEvent::SetParameter(EventParamName inName, EventParamType inType, UInt32 inBufferSize, const void * inData)
{
    return ::SetEventParameter( m_eventRef , inName , inType , inBufferSize , inData );
}

// ----------------------------------------------------------------------------
// Control Access Support
// ----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS( wxMacControl , wxObject )

wxMacControl::wxMacControl() 
{
    Init();
}

wxMacControl::wxMacControl(wxWindow* peer , bool isRootControl )
{
    Init();
    m_peer = peer;
    m_isRootControl = isRootControl;
}

wxMacControl::wxMacControl( wxWindow* peer , ControlRef control )
{
    Init();
    m_peer = peer;
    m_controlRef = control;
}

wxMacControl::wxMacControl( wxWindow* peer , WXWidget control )
{
    Init();
    m_peer = peer;
    m_controlRef = (ControlRef) control;
}

wxMacControl::~wxMacControl()
{
}

void wxMacControl::Init()
{
    m_peer = NULL;
    m_controlRef = NULL;
    m_needsFocusRect = false;
    m_isRootControl = false;
}

void wxMacControl::Dispose()
{
    wxASSERT_MSG( IsValidControlHandle(m_controlRef) , wxT("Invalid Control Handle (maybe already released) in Dispose") );

    // we cannot check the ref count here anymore, as autorelease objects might delete their refs later
    CFRelease(m_controlRef);
    m_controlRef = NULL;
}

void wxMacControl::SetReference( URefCon data )
{
    SetControlReference( m_controlRef , data );
}

OSStatus wxMacControl::GetData(ControlPartCode inPartCode , ResType inTag , Size inBufferSize , void * inOutBuffer , Size * outActualSize ) const
{
    return ::GetControlData( m_controlRef , inPartCode , inTag , inBufferSize , inOutBuffer , outActualSize );
}

OSStatus wxMacControl::GetDataSize(ControlPartCode inPartCode , ResType inTag , Size * outActualSize ) const
{
    return ::GetControlDataSize( m_controlRef , inPartCode , inTag , outActualSize );
}

OSStatus wxMacControl::SetData(ControlPartCode inPartCode , ResType inTag , Size inSize , const void * inData)
{
    return ::SetControlData( m_controlRef , inPartCode , inTag , inSize , inData );
}

OSStatus wxMacControl::SendEvent( EventRef event , OptionBits inOptions )
{
#if TARGET_API_MAC_OSX
    return SendEventToEventTargetWithOptions( event,
        HIObjectGetEventTarget( (HIObjectRef) m_controlRef ), inOptions );
#else
    #pragma unused(inOptions)
    return SendEventToEventTarget(event,GetControlEventTarget( m_controlRef ) );
#endif
}

OSStatus wxMacControl::SendHICommand( HICommand &command , OptionBits inOptions )
{
    wxMacCarbonEvent event( kEventClassCommand , kEventCommandProcess );

    event.SetParameter<HICommand>(kEventParamDirectObject,command);

    return SendEvent( event , inOptions );
}

OSStatus wxMacControl::SendHICommand( UInt32 commandID , OptionBits inOptions  )
{
    HICommand command;

    memset( &command, 0 , sizeof(command) );
    command.commandID = commandID;
    return SendHICommand( command , inOptions );
}

void wxMacControl::Flash( ControlPartCode part , UInt32 ticks )
{
    unsigned long finalTicks;

    HiliteControl( m_controlRef , part );
    Delay( ticks , &finalTicks );
    HiliteControl( m_controlRef , kControlNoPart );
}

SInt32 wxMacControl::GetValue() const
{
    return ::GetControl32BitValue( m_controlRef );
}

SInt32 wxMacControl::GetMaximum() const
{
    return ::GetControl32BitMaximum( m_controlRef );
}

SInt32 wxMacControl::GetMinimum() const
{
    return ::GetControl32BitMinimum( m_controlRef );
}