window.cpp

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

    if ( m_peer->NeedsFocusRect() && m_peer->HasFocus() )
        outerBorder += 4 ;

    if ( outerBorder == 0 )
        return ;

    // now we know that we have something to do at all

    // as the borders are drawn on the parent we have to properly invalidate all these areas
    RgnHandle updateInner , updateOuter;
    Rect rect ;

    // this rectangle is in HIViewCoordinates under OSX and in Window Coordinates under Carbon
    updateInner = NewRgn() ;
    updateOuter = NewRgn() ;

    m_peer->GetRect( &rect ) ;
    RectRgn( updateInner, &rect ) ;
    InsetRect( &rect , -outerBorder , -outerBorder ) ;
    RectRgn( updateOuter, &rect ) ;
    DiffRgn( updateOuter, updateInner , updateOuter ) ;

#ifdef __WXMAC_OSX__
    GetParent()->m_peer->SetNeedsDisplay( updateOuter ) ;
#else
    WindowRef tlw = (WindowRef) MacGetTopLevelWindowRef() ;
    if ( tlw )
        InvalWindowRgn( tlw , updateOuter ) ;
#endif

    DisposeRgn( updateOuter ) ;
    DisposeRgn( updateInner ) ;
}

void wxWindowMac::DoMoveWindow(int x, int y, int width, int height)
{
    // this is never called for a toplevel window, so we know we have a parent
    int former_x , former_y , former_w, former_h ;

    // Get true coordinates of former position
    DoGetPosition( &former_x , &former_y ) ;
    DoGetSize( &former_w , &former_h ) ;

    wxWindow *parent = GetParent();
    if ( parent )
    {
        wxPoint pt(parent->GetClientAreaOrigin());
        former_x += pt.x ;
        former_y += pt.y ;
    }

    int actualWidth = width ;
    int actualHeight = height ;
    int actualX = x;
    int actualY = y;

    if ((m_minWidth != -1) && (actualWidth < m_minWidth))
        actualWidth = m_minWidth;
    if ((m_minHeight != -1) && (actualHeight < m_minHeight))
        actualHeight = m_minHeight;
    if ((m_maxWidth != -1) && (actualWidth > m_maxWidth))
        actualWidth = m_maxWidth;
    if ((m_maxHeight != -1) && (actualHeight > m_maxHeight))
        actualHeight = m_maxHeight;

    bool doMove = false, doResize = false ;

    if ( actualX != former_x || actualY != former_y )
        doMove = true ;

    if ( actualWidth != former_w || actualHeight != former_h )
        doResize = true ;

    if ( doMove || doResize )
    {
        // as the borders are drawn outside the native control, we adjust now

        wxRect bounds( wxPoint( actualX + MacGetLeftBorderSize() ,actualY + MacGetTopBorderSize() ),
            wxSize( actualWidth - (MacGetLeftBorderSize() + MacGetRightBorderSize()) ,
                actualHeight - (MacGetTopBorderSize() + MacGetBottomBorderSize()) ) ) ;

        Rect r ;
        wxMacRectToNative( &bounds , &r ) ;

        if ( !GetParent()->IsTopLevel() )
            wxMacWindowToNative( GetParent() , &r ) ;

        MacInvalidateBorders() ;

        m_cachedClippedRectValid = false ;
        m_peer->SetRect( &r ) ;

        wxWindowMac::MacSuperChangedPosition() ; // like this only children will be notified

        MacInvalidateBorders() ;

        MacRepositionScrollBars() ;
        if ( doMove )
        {
            wxPoint point(actualX, actualY);
            wxMoveEvent event(point, m_windowId);
            event.SetEventObject(this);
            GetEventHandler()->ProcessEvent(event) ;
        }

        if ( doResize )
        {
            MacRepositionScrollBars() ;
            wxSize size(actualWidth, actualHeight);
            wxSizeEvent event(size, m_windowId);
            event.SetEventObject(this);
            GetEventHandler()->ProcessEvent(event);
        }
    }
}

wxSize wxWindowMac::DoGetBestSize() const
{
    if ( m_macIsUserPane || IsTopLevel() )
        return wxWindowBase::DoGetBestSize() ;

    Rect    bestsize = { 0 , 0 , 0 , 0 } ;
    int bestWidth, bestHeight ;

    m_peer->GetBestRect( &bestsize ) ;
    if ( EmptyRect( &bestsize ) )
    {
        bestsize.left =
        bestsize.top = 0 ;
        bestsize.right =
        bestsize.bottom = 16 ;

        if ( IsKindOf( CLASSINFO( wxScrollBar ) ) )
        {
            bestsize.bottom = 16 ;
        }
#if wxUSE_SPINBTN
        else if ( IsKindOf( CLASSINFO( wxSpinButton ) ) )
        {
            bestsize.bottom = 24 ;
        }
#endif
        else
        {
            // return wxWindowBase::DoGetBestSize() ;
        }
    }

    bestWidth = bestsize.right - bestsize.left ;
    bestHeight = bestsize.bottom - bestsize.top ;
    if ( bestHeight < 10 )
        bestHeight = 13 ;

    return wxSize(bestWidth, bestHeight);
}

// set the size of the window: if the dimensions are positive, just use them,
// but if any of them is equal to -1, it means that we must find the value for
// it ourselves (unless sizeFlags contains wxSIZE_ALLOW_MINUS_ONE flag, in
// which case -1 is a valid value for x and y)
//
// If sizeFlags contains wxSIZE_AUTO_WIDTH/HEIGHT flags (default), we calculate
// the width/height to best suit our contents, otherwise we reuse the current
// width/height
void wxWindowMac::DoSetSize(int x, int y, int width, int height, int sizeFlags)
{
    // get the current size and position...
    int currentX, currentY;
    int currentW, currentH;

    GetPosition(&currentX, &currentY);
    GetSize(&currentW, &currentH);

    // ... and don't do anything (avoiding flicker) if it's already ok
    if ( x == currentX && y == currentY &&
        width == currentW && height == currentH && ( height != -1 && width != -1 ) )
    {
        // TODO: REMOVE
        MacRepositionScrollBars() ; // we might have a real position shift

        return;
    }

    if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
    {
        if ( x == wxDefaultCoord )
            x = currentX;
        if ( y == wxDefaultCoord )
            y = currentY;
    }

    AdjustForParentClientOrigin( x, y, sizeFlags );

    wxSize size = wxDefaultSize;
    if ( width == wxDefaultCoord )
    {
        if ( sizeFlags & wxSIZE_AUTO_WIDTH )
        {
            size = DoGetBestSize();
            width = size.x;
        }
        else
        {
            // just take the current one
            width = currentW;
        }
    }

    if ( height == wxDefaultCoord )
    {
        if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
        {
            if ( size.x == wxDefaultCoord )
                size = DoGetBestSize();
            // else: already called DoGetBestSize() above

            height = size.y;
        }
        else
        {
            // just take the current one
            height = currentH;
        }
    }

    DoMoveWindow( x, y, width, height );
}

wxPoint wxWindowMac::GetClientAreaOrigin() const
{
    RgnHandle rgn = NewRgn() ;
    Rect content ;
    if ( m_peer->GetRegion( kControlContentMetaPart , rgn ) == noErr )
    {
        GetRegionBounds( rgn , &content ) ;
    }
    else
    {
        content.left =
        content.top = 0 ;
    }

    DisposeRgn( rgn ) ;

    return wxPoint( content.left + MacGetLeftBorderSize() , content.top + MacGetTopBorderSize() );
}

void wxWindowMac::DoSetClientSize(int clientwidth, int clientheight)
{
    if ( clientwidth != wxDefaultCoord || clientheight != wxDefaultCoord )
    {
        int currentclientwidth , currentclientheight ;
        int currentwidth , currentheight ;

        GetClientSize( &currentclientwidth , &currentclientheight ) ;
        GetSize( &currentwidth , &currentheight ) ;

        DoSetSize( wxDefaultCoord , wxDefaultCoord , currentwidth + clientwidth - currentclientwidth ,
            currentheight + clientheight - currentclientheight , wxSIZE_USE_EXISTING ) ;
    }
}

void wxWindowMac::SetLabel(const wxString& title)
{
    m_label = wxStripMenuCodes(title, wxStrip_Mnemonics) ;

    if ( m_peer && m_peer->Ok() )
        m_peer->SetLabel( m_label ) ;

    Refresh() ;
}

wxString wxWindowMac::GetLabel() const
{
    return m_label ;
}

bool wxWindowMac::Show(bool show)
{
    bool former = MacIsReallyShown() ;
    if ( !wxWindowBase::Show(show) )
        return false;

    // TODO: use visibilityChanged Carbon Event for OSX
    if ( m_peer )
        m_peer->SetVisibility( show , true ) ;

    if ( former != MacIsReallyShown() )
        MacPropagateVisibilityChanged() ;

    return true;
}

bool wxWindowMac::Enable(bool enable)
{
    wxASSERT( m_peer->Ok() ) ;
    bool former = MacIsReallyEnabled() ;
    if ( !wxWindowBase::Enable(enable) )
        return false;

    m_peer->Enable( enable ) ;

    if ( former != MacIsReallyEnabled() )
        MacPropagateEnabledStateChanged() ;

    return true;
}

//
// status change propagations (will be not necessary for OSX later )
//

void wxWindowMac::MacPropagateVisibilityChanged()
{
#if !TARGET_API_MAC_OSX
    MacVisibilityChanged() ;

    wxWindowMac *child;
    wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
    while ( node )
    {
        child = node->GetData();
        if ( child->IsShown() )
            child->MacPropagateVisibilityChanged() ;

        node = node->GetNext();
    }
#endif
}

void wxWindowMac::MacPropagateEnabledStateChanged()
{
#if !TARGET_API_MAC_OSX
    MacEnabledStateChanged() ;

    wxWindowMac *child;
    wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
    while ( node )
    {
        child = node->GetData();
        if ( child->IsEnabled() )
            child->MacPropagateEnabledStateChanged() ;

        node = node->GetNext();
    }
#endif
}

void wxWindowMac::MacPropagateHiliteChanged()
{
#if !TARGET_API_MAC_OSX
    MacHiliteChanged() ;

    wxWindowMac *child;
    wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
    while ( node )
    {
        child = node->GetData();
        if (child /* && child->IsEnabled() */)
            child->MacPropagateHiliteChanged() ;

        node = node->GetNext();
    }
#endif
}

//
// status change notifications
//

void wxWindowMac::MacVisibilityChanged()
{
}

void wxWindowMac::MacHiliteChanged()
{
}

void wxWindowMac::MacEnabledStateChanged()
{
}

//
// status queries on the inherited window's state
//

bool wxWindowMac::MacIsReallyShown()
{
    // only under OSX the visibility of the TLW is taken into account
    if ( m_isBeingDeleted )
        return false ;

#if TARGET_API_MAC_OSX
    if ( m_peer && m_peer->Ok() )
        return m_peer->IsVisible();
#endif

    wxWindow* win = this ;
    while ( win->IsShown() )
    {
        if ( win->IsTopLevel() )
            return true ;

        win = win->GetParent() ;
        if ( win == NULL )
            return true ;
    }

    return false ;
}

bool wxWindowMac::MacIsReallyEnabled()
{
    return m_peer->IsEnabled() ;
}

bool wxWindowMac::MacIsReallyHilited()
{
    return m_peer->IsActive();
}

void wxWindowMac::MacFlashInvalidAreas()
{
#if TARGET_API_MAC_OSX
    HIViewFlashDirtyArea( (WindowRef) MacGetTopLevelWindowRef() ) ;
#endif
}

int wxWindowMac::GetCharHeight() const
{
    wxClientDC dc( (wxWindowMac*)this ) ;

    return dc.GetCharHeight() ;
}

int wxWindowMac::GetCharWidth() const
{
    wxClientDC dc( (wxWindowMac*)this ) ;

    return dc.GetCharWidth() ;
}

void wxWindowMac::GetTextExtent(const wxStr