window.cpp

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

    ww -= MacGetLeftBorderSize(  )  + MacGetRightBorderSize(  ) ;
    hh -= MacGetTopBorderSize(  ) + MacGetBottomBorderSize( );

    if ( (m_vScrollBar && m_vScrollBar->IsShown()) || (m_hScrollBar  && m_hScrollBar->IsShown()) )
    {
        int x1 = 0 ;
        int y1 = 0 ;
        int w = m_width ;
        int h = m_height ;

        MacClientToRootWindow( &x1 , &y1 ) ;
        MacClientToRootWindow( &w , &h ) ;

        wxWindowMac *iter = (wxWindowMac*)this ;

        int totW = 10000 , totH = 10000;
        while( iter )
        {
            if ( iter->IsTopLevel() )
            {
                totW = iter->m_width ;
                totH = iter->m_height ;
                break ;
            }

            iter = iter->GetParent() ;
        }

        if (m_hScrollBar  && m_hScrollBar->IsShown() )
        {
            hh -= MAC_SCROLLBAR_SIZE;
            if ( h-y1 >= totH )
            {
                hh += 1 ;
            }
        }
        if (m_vScrollBar  && m_vScrollBar->IsShown() )
        {
            ww -= MAC_SCROLLBAR_SIZE;
            if ( w-x1 >= totW )
            {
                ww += 1 ;
            }
        }
    }
    if(x)   *x = ww;
    if(y)   *y = hh;
}


// ----------------------------------------------------------------------------
// tooltips
// ----------------------------------------------------------------------------

#if wxUSE_TOOLTIPS

void wxWindowMac::DoSetToolTip(wxToolTip *tooltip)
{
    wxWindowBase::DoSetToolTip(tooltip);

    if ( m_tooltip )
        m_tooltip->SetWindow(this);
}

#endif // wxUSE_TOOLTIPS

void wxWindowMac::DoMoveWindow(int x, int y, int width, int height)
{
    int former_x = m_x ;
    int former_y = m_y ;
    int former_w = m_width ;
    int former_h = m_height ;

    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 ;
    bool doResize = false ;

    if ( actualX != former_x || actualY != former_y )
    {
        doMove = true ;
    }
    if ( actualWidth != former_w || actualHeight != former_h )
    {
        doResize = true ;
    }

    if ( doMove || doResize )
    {
        // erase former position

        bool partialRepaint = false ;

        if ( !HasFlag(wxFULL_REPAINT_ON_RESIZE) )
        {
            wxPoint oldPos( m_x , m_y ) ;
            wxPoint newPos( actualX , actualY ) ;
            MacWindowToRootWindow( &oldPos.x , &oldPos.y ) ;
            MacWindowToRootWindow( &newPos.x , &newPos.y ) ;
            if ( oldPos == newPos )
            {
                partialRepaint = true ;
                RgnHandle oldRgn,newRgn,diffRgn ;
                oldRgn = NewRgn() ;
                newRgn = NewRgn() ;
                diffRgn = NewRgn() ;

                // invalidate the differences between the old and the new area

                SetRectRgn(oldRgn , oldPos.x , oldPos.y , oldPos.x + m_width , oldPos.y + m_height ) ;
                SetRectRgn(newRgn , newPos.x , newPos.y , newPos.x + actualWidth , newPos.y + actualHeight ) ;
                DiffRgn( newRgn , oldRgn , diffRgn ) ;
                InvalWindowRgn( (WindowRef) MacGetRootWindow() , diffRgn ) ;
                DiffRgn( oldRgn , newRgn , diffRgn ) ;
                InvalWindowRgn( (WindowRef) MacGetRootWindow() , diffRgn ) ;

                // we also must invalidate the border areas, someone might optimize this one day to invalidate only the really
                // changing pixels...

                if ( MacGetLeftBorderSize() != 0 || MacGetRightBorderSize() != 0 ||
                     MacGetTopBorderSize() != 0 || MacGetBottomBorderSize() != 0 )
                {
                    RgnHandle innerOldRgn, innerNewRgn ;
                    innerOldRgn = NewRgn() ;
                    innerNewRgn = NewRgn() ;

                    SetRectRgn(innerOldRgn , oldPos.x + MacGetLeftBorderSize()  , oldPos.y + MacGetTopBorderSize() ,
                               oldPos.x + m_width - MacGetRightBorderSize() , oldPos.y + m_height - MacGetBottomBorderSize() ) ;
                    DiffRgn( oldRgn , innerOldRgn , diffRgn ) ;
                    InvalWindowRgn( (WindowRef) MacGetRootWindow() , diffRgn ) ;

                    SetRectRgn(innerNewRgn , newPos.x + MacGetLeftBorderSize()  , newPos.y + MacGetTopBorderSize() ,
                               newPos.x + actualWidth - MacGetRightBorderSize() , newPos.y + actualHeight - MacGetBottomBorderSize() ) ;
                    DiffRgn( newRgn , innerNewRgn , diffRgn ) ;
                    InvalWindowRgn( (WindowRef) MacGetRootWindow() , diffRgn ) ;

                    DisposeRgn( innerOldRgn ) ;
                    DisposeRgn( innerNewRgn ) ;
                }

                DisposeRgn(oldRgn) ;
                DisposeRgn(newRgn) ;
                DisposeRgn(diffRgn) ;
            }
        }

        if ( !partialRepaint )
            Refresh() ;

        m_x = actualX ;
        m_y = actualY ;
        m_width = actualWidth ;
        m_height = actualHeight ;

        // update any low-level frame-relative positions

        MacUpdateDimensions() ;
        // erase new position

        if ( !partialRepaint )
            Refresh() ;
        if ( doMove )
            wxWindowMac::MacSuperChangedPosition() ; // like this only children will be notified

        MacRepositionScrollBars() ;
        if ( doMove )
        {
            wxPoint point(m_x, m_y);
            wxMoveEvent event(point, m_windowId);
            event.SetEventObject(this);
            GetEventHandler()->ProcessEvent(event) ;
        }
        if ( doResize )
        {
            MacRepositionScrollBars() ;
            wxSize size(m_width, m_height);
            wxSizeEvent event(size, m_windowId);
            event.SetEventObject(this);
            GetEventHandler()->ProcessEvent(event);
        }
    }

}

// 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;
    GetPosition(&currentX, &currentY);

    int currentW,currentH;
    GetSize(&currentW, &currentH);

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

    if ( x == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
        x = currentX;
    if ( y == -1 && !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
        y = currentY;

    AdjustForParentClientOrigin(x, y, sizeFlags);

    wxSize size(-1, -1);
    if ( width == -1 )
    {
        if ( sizeFlags & wxSIZE_AUTO_WIDTH )
        {
            size = DoGetBestSize();
            width = size.x;
        }
        else
        {
            // just take the current one
            width = currentW;
        }
    }

    if ( height == -1 )
    {
        if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
        {
            if ( size.x == -1 )
            {
                size = DoGetBestSize();
            }
            //else: already called DoGetBestSize() above

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

    DoMoveWindow(x, y, width, height);

}
// For implementation purposes - sometimes decorations make the client area
// smaller

wxPoint wxWindowMac::GetClientAreaOrigin() const
{
    return wxPoint(MacGetLeftBorderSize(  ) , MacGetTopBorderSize(  ) );
}

void wxWindowMac::SetLabel(const wxString& label)
{
    m_label = label ;
}

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

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

    MacSuperShown( show ) ;
    Refresh() ;

    return true;
}

void wxWindowMac::MacSuperShown( bool show )
{
    wxWindowListNode *node = GetChildren().GetFirst();
    while ( node )
    {
        wxWindowMac *child = node->GetData();
        if ( child->m_isShown )
            child->MacSuperShown( show ) ;
        node = node->GetNext();
    }
}

void wxWindowMac::MacSuperEnabled( bool enabled )
{
    if ( !IsTopLevel() )
    {
      // to be absolutely correct we'd have to invalidate (with eraseBkground
      // because unter MacOSX the frames are drawn with an addXXX mode)
      // the borders area
    }
    wxWindowListNode *node = GetChildren().GetFirst();
    while ( node )
    {
        wxWindowMac *child = (wxWindowMac *)node->GetData();
        if ( child->m_isShown )
            child->MacSuperEnabled( enabled ) ;
        node = node->GetNext();
    }
}

bool wxWindowMac::MacIsReallyShown() const
{
    if ( m_isShown && (m_parent != NULL && !IsTopLevel() ) ) {
        return m_parent->MacIsReallyShown();
    }
    return m_isShown;
/*
    bool status = m_isShown ;
    wxWindowMac * win = this ;
    while ( status && win->m_parent != NULL )
    {
        win = win->m_parent ;
        status = win->m_isShown ;
    }
    return status ;
*/
}

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 wxString& string, int *x, int *y,
                           int *descent, int *externalLeading, const wxFont *theFont ) const
{
    const wxFont *fontToUse = theFont;
    if ( !fontToUse )
        fontToUse = &m_font;

    wxClientDC dc( (wxWindowMac*) this ) ;
    long lx,ly,ld,le ;
    dc.GetTextExtent( string , &lx , &ly , &ld, &le, (wxFont *)fontToUse ) ;
    if ( externalLeading )
        *externalLeading = le ;
    if ( descent )
        *descent = ld ;
    if ( x )
        *x = lx ;
    if ( y )
        *y = ly ;
}

/*
 * Rect is given in client coordinates, for further reading, read wxTopLevelWindowMac::InvalidateRect
 * we always intersect with the entire window, not only with the client area
 */

void wxWindowMac::Refresh(bool eraseBack, const wxRect *rect)
{
    if ( MacGetTopLevelWindow() == NULL )
        return ;

    if ( !MacIsReallyShown() )
        return ;

     wxPoint client = GetClientAreaOrigin();
    int x1 = -client.x;
    int y1 = -client.y;
    int x2 = m_width - client.x;
    int y2 = m_height - client.y;

    if (IsKindOf( CLASSINFO(wxButton)))
    {
        // buttons have an "aura"
        y1 -= 5;
        x1 -= 5;
        y2 += 5;
        x2 += 5;
    }

    Rect clientrect = { y1, x1, y2, x2 };

    if ( rect )
    {
        Rect r = { rect->y , rect->x , rect->y + rect->height , rect->x + rect->width } ;
        SectRect( &clientrect , &r , &clientrect ) ;
    }

    if ( !EmptyRect( &clientrect ) )
    {
      int top = 0 , left = 0 ;

      MacClientToRootWindow( &left , &top ) ;
      OffsetRect( &clientrect , left , top ) ;

      MacGetTopLevelWindow()->MacInvalidate( &clientrect , eraseBack ) ;
    }
}

wxWindowMac *wxGetActiveWindow()
{
    // actually this is a windows-only concept
    return NULL;
}

// Coordinates relative to the window
void wxWindowMac::WarpPointer (int x_pos, int y_pos)
{
    // We really don't move the mouse programmatically under Mac.
}

const wxBrush& wxWindowMac::MacGetBackgroundBrush()
{
    if ( m_backgroundColour == wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE) )
    {
        m_macBackgroundBrush.SetMacTheme( kThemeBrushDocumentWindowBackground ) ;
    }
    else if (  m_backgroundColour == wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE ) )
    {
        // on mac we have the difficult situation, that 3dface gray can be different colours, depending whether
        // it is on a notebook panel or not, in order to take care of that we walk up the hierarchy until we have
        // either a non gray background color or a non control window

        WindowRef window = (WindowRef) MacGetRootWindow() ;

        wxWindowMac* parent = GetParent() ;
        while( parent )
        {
            if ( parent->MacGetRootWindow() != (WXWindow) window )
            {
                // we are in a different window on the mac system
                parent = NULL ;
                break ;
            }

            {
                if ( parent->m_backgroundColour != wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE )
                    && parent->m_backgroundColour != wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE) )
                {
                    // if we have any other colours in the hierarchy
                    m_macBackgroundBrush.SetColour( parent->m_backgroundColour ) ;
                    break ;
                }
                // if we have the normal colours in the hierarchy but another control etc. -> use it's background
                if ( parent->IsKindOf( CLASSINFO( wxNotebook ) ) || parent->IsKindOf( CLASSINFO( wxTabCtrl ) ))
                {
                    Rect extent = { 0 , 0 , 0 , 0 } ;
                    int x , y ;
                    x = y = 0 ;
                    wxSize size = parent->GetSize() ;
                    parent->MacClientToRootWindow( &x , &y ) ;
                    extent.left = x ;
                    extent.top = y ;
                    extent.top-- ;
                    extent.right = x + size.x ;
                    extent.bottom = y + size.y ;
                    m_macBackgroundBrush.SetMacThemeBackground( kThemeBackgroundTabPane , (WXRECTPTR) &extent ) ; // todo eventually change for inactive
                    break ;
                }
            }
            parent = parent->GetParent() ;
        }
        if ( !parent )
        {
            m_macBackgroundBrush.SetMacTheme( kThemeBrushDialogBackgroundActive ) ; // todo eventually change for inactive
        }
    }
    else
    {
        m_macBackgroundBrush.SetColour( m_backgroundColour ) ;
    }

    return m_macBackgroundBrush ;
}

void wxWindowMac::OnEraseBackground(wxEraseEvent& event)
{
    event.GetDC()->Clear() ;
}

void wxWindowMac::OnNcPaint( wxNcPaintEvent& event )
{
    wxWindowDC dc(this) ;
    wxMacPortSetter helper(&dc) ;

    MacPaintBorders( dc.m_macLocalOrigin.x , dc.m_macLocalOrigin.y) ;
}

int wxWindowMac::GetScrollPos(int orient) const
{
    if ( orient == wxHORIZONTAL )
    {
       if ( m_hScrollBar )
           return m_hScrollBar->GetThumbPosition() ;
    }
    else
    {
       if ( m_vScrollBar )
           return m_vScrollBar->GetThumbPosition() ;
    }
    return 0;
}