toplevel.cpp

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

        }
        else
        #endif
        {
           ::TransitionWindow((WindowRef)m_macWindow,kWindowZoomTransitionEffect,kWindowShowTransitionAction,nil);
        }
        ::SelectWindow( (WindowRef)m_macWindow ) ;
        // no need to generate events here, they will get them triggered by macos
        // actually they should be , but apparently they are not
        wxSize size(m_width, m_height);
        wxSizeEvent event(size, m_windowId);
        event.SetEventObject(this);
        GetEventHandler()->ProcessEvent(event);
    }
    else
    {
        #if wxUSE_SYSTEM_OPTIONS
        if ( (wxSystemOptions::HasOption(wxMAC_WINDOW_PLAIN_TRANSITION) ) && ( wxSystemOptions::GetOptionInt( wxMAC_WINDOW_PLAIN_TRANSITION ) == 1) )
        {
           ::HideWindow((WindowRef) m_macWindow );
        }
        else
        #endif
        {
           ::TransitionWindow((WindowRef)m_macWindow,kWindowZoomTransitionEffect,kWindowHideTransitionAction,nil);
        }
    }

    if ( !show )
    {
    }
    else
    {
        Refresh() ;
    }

    return true;
}

void wxTopLevelWindowMac::DoMoveWindow(int x, int y, int width, int height)
{
    wxMacPortStateHelper help( (GrafPtr) GetWindowPort( (WindowRef) m_macWindow) ) ;
    wxMacWindowClipper clip (this);

    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 )
    {
        m_x = actualX ;
        m_y = actualY ;

        if ( doMove )
            ::MoveWindow((WindowRef)m_macWindow, m_x, m_y  , false); // don't make frontmost

        m_width = actualWidth ;
        m_height = actualHeight ;

        if ( doResize )
            ::SizeWindow((WindowRef)m_macWindow, m_width, m_height  , true);

        // the OS takes care of invalidating and erasing the new area so we only have to
        // take care of refreshing for full repaints

        if ( doResize && HasFlag(wxFULL_REPAINT_ON_RESIZE) )
            Refresh() ;


        if ( IsKindOf( CLASSINFO( wxFrame ) ) )
        {
            wxFrame* frame = (wxFrame*) this ;
#if wxUSE_STATUSBAR
            frame->PositionStatusBar();
#endif
#if wxUSE_TOOLBAR
            frame->PositionToolBar();
#endif
        }
        if ( doMove )
            wxWindowMac::MacTopLevelWindowChangedPosition() ; // 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);
        }
    }

}

/*
 * Invalidation Mechanism
 *
 * The update mechanism reflects exactely the windows mechanism
 * the rect gets added to the window invalidate region, if the eraseBackground flag
 * has been true for any part of the update rgn the background is erased in the entire region
 * not just in the specified rect.
 *
 * In order to achive this, we also have an internal m_macNoEraseUpdateRgn, all rects that have
 * the eraseBackground flag set to false are also added to this rgn. upon receiving an update event
 * the update rgn is compared to the m_macNoEraseUpdateRgn and in case they differ, every window
 * will get the eraseBackground event first
 */

void wxTopLevelWindowMac::MacInvalidate( const WXRECTPTR rect, bool eraseBackground )
{
    GrafPtr formerPort ;
    GetPort( &formerPort ) ;
    SetPortWindowPort( (WindowRef)m_macWindow ) ;

    m_macNeedsErasing |= eraseBackground ;

    // if we already know that we will have to erase, there's no need to track the rest
    if ( !m_macNeedsErasing)
    {
        // we end only here if eraseBackground is false
        // if we already have a difference between m_macNoEraseUpdateRgn and UpdateRgn
        // we will have to erase anyway

        RgnHandle       updateRgn = NewRgn();
        RgnHandle       diffRgn = NewRgn() ;
        if ( updateRgn && diffRgn )
        {
            GetWindowUpdateRgn( (WindowRef)m_macWindow , updateRgn );
            Point pt = {0,0} ;
            LocalToGlobal( &pt ) ;
            OffsetRgn( updateRgn , -pt.h , -pt.v ) ;
            DiffRgn( updateRgn , (RgnHandle) m_macNoEraseUpdateRgn , diffRgn ) ;
            if ( !EmptyRgn( diffRgn ) )
            {
                m_macNeedsErasing = true ;
            }
        }
        if ( updateRgn )
            DisposeRgn( updateRgn );
        if ( diffRgn )
            DisposeRgn( diffRgn );

        if ( !m_macNeedsErasing )
        {
            RgnHandle rectRgn = NewRgn() ;
            SetRectRgn( rectRgn , ((Rect*)rect)->left , ((Rect*)rect)->top , ((Rect*)rect)->right , ((Rect*)rect)->bottom ) ;
            UnionRgn( (RgnHandle) m_macNoEraseUpdateRgn , rectRgn , (RgnHandle) m_macNoEraseUpdateRgn ) ;
            DisposeRgn( rectRgn ) ;
        }
    }
    InvalWindowRect( (WindowRef)m_macWindow , (Rect*)rect ) ;
    // turn this on to debug the refreshing cycle
#if wxMAC_DEBUG_REDRAW
    PaintRect( rect ) ;
#endif
    SetPort( formerPort ) ;
}


bool wxTopLevelWindowMac::SetShape(const wxRegion& region)
{
    wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
                 _T("Shaped windows must be created with the wxFRAME_SHAPED style."));

#if TARGET_CARBON
    // The empty region signifies that the shape should be removed from the
    // window.
    if ( region.IsEmpty() )
    {
        wxSize sz = GetClientSize();
        wxRegion rgn(0, 0, sz.x, sz.y);
        return SetShape(rgn);
    }

    // Make a copy of the region
    RgnHandle  shapeRegion = NewRgn();
    CopyRgn( (RgnHandle)region.GetWXHRGN(), shapeRegion );

    // Dispose of any shape region we may already have
    RgnHandle oldRgn = (RgnHandle)GetWRefCon( (WindowRef)MacGetWindowRef() );
    if ( oldRgn )
        DisposeRgn(oldRgn);

    // Save the region so we can use it later
    SetWRefCon((WindowRef)MacGetWindowRef(), (SInt32)shapeRegion);

    // Tell the window manager that the window has changed shape
    ReshapeCustomWindow((WindowRef)MacGetWindowRef());
    return true;
#else
    return false;
#endif
}

// ---------------------------------------------------------------------------
// Support functions for shaped windows, based on Apple's CustomWindow sample at
// http://developer.apple.com/samplecode/Sample_Code/Human_Interface_Toolbox/Mac_OS_High_Level_Toolbox/CustomWindow.htm
// ---------------------------------------------------------------------------

#if TARGET_CARBON

static void wxShapedMacWindowGetPos(WindowRef window, Rect* inRect)
{
    GetWindowPortBounds(window, inRect);
    Point pt = {inRect->left, inRect->top};
    SetPort((GrafPtr) GetWindowPort(window));
    LocalToGlobal(&pt);
    inRect->top = pt.v;
    inRect->left = pt.h;
    inRect->bottom += pt.v;
    inRect->right += pt.h;
}


static SInt32 wxShapedMacWindowGetFeatures(WindowRef window, SInt32 param)
{
    /*------------------------------------------------------
        Define which options your custom window supports.
    --------------------------------------------------------*/
    //just enable everything for our demo
    *(OptionBits*)param=//kWindowCanGrow|
                        //kWindowCanZoom|
                        //kWindowCanCollapse|
                        //kWindowCanGetWindowRegion|
                        //kWindowHasTitleBar|
                        //kWindowSupportsDragHilite|
                        kWindowCanDrawInCurrentPort|
                        //kWindowCanMeasureTitle|
                        kWindowWantsDisposeAtProcessDeath|
                        kWindowSupportsSetGrowImageRegion|
                        kWindowDefSupportsColorGrafPort;
    return 1;
}

// The content region is left as a rectangle matching the window size, this is
// so the origin in the paint event, and etc. still matches what the
// programmer expects.
static void wxShapedMacWindowContentRegion(WindowRef window, RgnHandle rgn)
{
    SetEmptyRgn(rgn);
    wxTopLevelWindowMac* win = wxFindWinFromMacWindow(window);
    if (win)
    {
        wxRect r = win->GetRect();
        SetRectRgn(rgn, r.GetLeft(), r.GetTop(), r.GetRight(), r.GetBottom());
    }
}

// The structure region is set to the shape given to the SetShape method.
static void wxShapedMacWindowStructureRegion(WindowRef window, RgnHandle rgn)
{
    RgnHandle cachedRegion = (RgnHandle) GetWRefCon(window);

    SetEmptyRgn(rgn);
    if (cachedRegion)
    {
        Rect windowRect;
        wxShapedMacWindowGetPos(window, &windowRect);    //how big is the window
        CopyRgn(cachedRegion, rgn);        //make a copy of our cached region
        OffsetRgn(rgn, windowRect.left, windowRect.top); // position it over window
        //MapRgn(rgn, &mMaskSize, &windowRect);    //scale it to our actual window size
    }
}



static SInt32 wxShapedMacWindowGetRegion(WindowRef window, SInt32 param)
{
    GetWindowRegionPtr rgnRec=(GetWindowRegionPtr)param;

    switch(rgnRec->regionCode)
    {
        case kWindowStructureRgn:
            wxShapedMacWindowStructureRegion(window, rgnRec->winRgn);
            break;
        case kWindowContentRgn:
            wxShapedMacWindowContentRegion(window, rgnRec->winRgn);
            break;
        default:
            SetEmptyRgn(rgnRec->winRgn);
    }  //switch

    return noErr;
}


static SInt32 wxShapedMacWindowHitTest(WindowRef window,SInt32 param)
{
    /*------------------------------------------------------
        Determine the region of the window which was hit
    --------------------------------------------------------*/
    Point hitPoint;
    static RgnHandle tempRgn=nil;

    if(!tempRgn)
        tempRgn=NewRgn();

    SetPt(&hitPoint,LoWord(param),HiWord(param));//get the point clicked

     //Mac OS 8.5 or later
    wxShapedMacWindowStructureRegion(window, tempRgn);
    if (PtInRgn(hitPoint, tempRgn)) //in window content region?
        return wInContent;

    return wNoHit;//no significant area was hit.
}


static pascal long wxShapedMacWindowDef(short varCode, WindowRef window, SInt16 message, SInt32 param)
{
    switch(message)
    {
        case kWindowMsgHitTest:
            return wxShapedMacWindowHitTest(window,param);

        case kWindowMsgGetFeatures:
            return wxShapedMacWindowGetFeatures(window,param);

        // kWindowMsgGetRegion is sent during CreateCustomWindow and ReshapeCustomWindow
        case kWindowMsgGetRegion:
            return wxShapedMacWindowGetRegion(window,param);
    }

    return 0;
}

#endif
// ---------------------------------------------------------------------------