C++ DisposeRgn函数代码示例

void renderspu_SystemWindowVisibleRegion(WindowInfo *window, GLint cRects, const GLint* pRects)
{
    CRASSERT(window);
    CRASSERT(window->window);

    /* Remember any additional clipping stuff e.g. seamless regions */
    if (window->hVisibleRegion)
    {
        DisposeRgn(window->hVisibleRegion);
        window->hVisibleRegion = 0;
    }

    if (cRects>0)
    {
        int i;
        /* Create some temporary regions */
        RgnHandle rgn = NewRgn();
        SetEmptyRgn (rgn);
        RgnHandle tmpRgn = NewRgn();
        for (i=0; i<cRects; ++i)
        {
            SetRectRgn (tmpRgn,
                        pRects[4*i]  , pRects[4*i+1],
                        pRects[4*i+2], pRects[4*i+3]);
            //DEBUG_MSG_POETZSCH (("visible rect %d %d %d %d\n", pRects[4*i]  , pRects[4*i+1],
            //                     pRects[4*i+2], pRects[4*i+3]));
            UnionRgn (rgn, tmpRgn, rgn);
        }
        DisposeRgn (tmpRgn);
        window->hVisibleRegion = rgn;
    }

    renderspu_SystemWindowApplyVisibleRegion(window);
}

void setWindowTrackingRgn(int windowIndex) {
		
	Rect rgnRect;
	RgnHandle rgn = NewRgn();
	MouseTrackingRegionID id;
	windowDescriptorBlock *windowBlock = windowBlockFromIndex(windowIndex);
	
	if (!windowBlock) 
		return;
		
	if (windowBlock->windowTrackingRef) {
		GetWindowBounds(windowBlock->handle, kWindowContentRgn, &rgnRect);	
		SetRectRgn( rgn, rgnRect.left, rgnRect.top, rgnRect.right, rgnRect.bottom );
		ChangeMouseTrackingRegion(windowBlock->windowTrackingRef,rgn, NULL);
		DisposeRgn( rgn );	
		return;
	}

	GetWindowBounds(windowBlock->handle, kWindowContentRgn, &rgnRect);	
	SetRectRgn( rgn, rgnRect.left, rgnRect.top, rgnRect.right, rgnRect.bottom );
		
	id.signature = 'FAST';
	id.id = windowIndex;
		
	OSStatus err = CreateMouseTrackingRegion(windowBlock->handle, rgn, NULL, kMouseTrackingOptionsGlobalClip,
						id, NULL, NULL, &windowBlock->windowTrackingRef);
	if ( noErr == err ) {
		RetainMouseTrackingRegion( windowBlock->windowTrackingRef);
		err = SetMouseTrackingRegionEnabled( windowBlock->windowTrackingRef, TRUE );
	}
		
	DisposeRgn( rgn );	
}

int 
TkRectInRegion(
    TkRegion region,
    int x,
    int y,
    unsigned int width,
    unsigned int height)
{
    RgnHandle rgn = (RgnHandle) region;
    RgnHandle rectRgn, destRgn;
    int result;
    
    rectRgn = NewRgn();
    destRgn = NewRgn();
    SetRectRgn(rectRgn, x,  y, x + width, y + height);
    SectRgn(rgn, rectRgn, destRgn);
    if (EmptyRgn(destRgn)) {
	result = RectangleOut;
    } else if (EqualRgn(rgn, destRgn)) {
	result = RectangleIn;
    } else {
	result = RectanglePart;
    }
    DisposeRgn(rectRgn);
    DisposeRgn(destRgn);
    return result;
}

static void renderspu_SystemSetRootVisibleRegion(GLint cRects, GLint *pRects)
{
    /* Remember the visible region of the root window if there is one */
    if (render_spu.hRootVisibleRegion)
    {
        DisposeRgn(render_spu.hRootVisibleRegion);
        render_spu.hRootVisibleRegion = 0;
    }

    if (cRects>0)
    {
        int i;
        render_spu.hRootVisibleRegion = NewRgn();
        SetEmptyRgn (render_spu.hRootVisibleRegion);
        RgnHandle tmpRgn = NewRgn();
        for (i=0; i<cRects; ++i)
        {
            SetRectRgn (tmpRgn,
                        pRects[4*i]  , pRects[4*i+1],
                        pRects[4*i+2], pRects[4*i+3]);
            UnionRgn (render_spu.hRootVisibleRegion, tmpRgn, render_spu.hRootVisibleRegion);
        }
        DisposeRgn (tmpRgn);
    }
}

/* restores former dialog size and (on Mac) position */
bool CDlgItemProperties::RestoreState() {
    wxConfigBase*   pConfig = wxConfigBase::Get(FALSE);
    int                iWidth, iHeight;

    wxASSERT(pConfig);
    if (!pConfig) return false;

    pConfig->SetPath(m_strBaseConfigLocation);

    pConfig->Read(wxT("Width"), &iWidth, wxDefaultCoord);
    pConfig->Read(wxT("Height"), &iHeight, wxDefaultCoord);

#ifndef __WXMAC__
    // Set size to saved values or defaults if no saved values
    SetSize(iWidth, iHeight);    
#else
    int                iTop, iLeft;
    
    pConfig->Read(wxT("YPos"), &iTop, wxDefaultCoord);
    pConfig->Read(wxT("XPos"), &iLeft, wxDefaultCoord);
    
    // If either co-ordinate is less then 0 then set it equal to 0 to ensure
    // it displays on the screen.
    if ((iLeft < 0) && (iLeft != wxDefaultCoord)) iLeft = 30;
    if ((iTop < 0) && (iTop != wxDefaultCoord)) iTop = 30;

    // Set size and position to saved values or defaults if no saved values
    SetSize(iLeft, iTop, iWidth, iHeight, wxSIZE_USE_EXISTING);

    // Now make sure window is on screen
    GetScreenPosition(&iLeft, &iTop);
    GetSize(&iWidth, &iHeight);
    
    Rect titleRect = {iTop, iLeft, iTop+22, iLeft+iWidth };
    InsetRect(&titleRect, 5, 5);                // Make sure at least a 5X5 piece visible
    RgnHandle displayRgn = NewRgn();
    CopyRgn(GetGrayRgn(), displayRgn);          // Region encompassing all displays
    Rect menuRect = ((**GetMainDevice())).gdRect;
    menuRect.bottom = GetMBarHeight() + menuRect.top;
    RgnHandle menuRgn = NewRgn();
    RectRgn(menuRgn, &menuRect);                // Region hidden by menu bar
    DiffRgn(displayRgn, menuRgn, displayRgn);   // Subtract menu bar region
    if (!RectInRgn(&titleRect, displayRgn)) {
        iTop = iLeft = 30;
        SetSize(iLeft, iTop, iWidth, iHeight, wxSIZE_USE_EXISTING);
    }
    DisposeRgn(menuRgn);
    DisposeRgn(displayRgn);
#endif

    return true;
}

void CDlgMessages::RestoreWindowDimensions() {
    wxString        strBaseConfigLocation = wxString(wxT("/Simple/Messages"));
    wxConfigBase*   pConfig = wxConfigBase::Get(FALSE);
    bool            bWindowIconized = false;
    bool            bWindowMaximized = false;
    int             iHeight = 0;
    int             iWidth = 0;
    int             iTop = 0;
    int             iLeft = 0;

    wxASSERT(pConfig);

    pConfig->SetPath(strBaseConfigLocation);

    pConfig->Read(wxT("YPos"), &iTop, 30);
    pConfig->Read(wxT("XPos"), &iLeft, 30);
    pConfig->Read(wxT("Width"), &iWidth, 640);
    pConfig->Read(wxT("Height"), &iHeight, 480);
    pConfig->Read(wxT("WindowIconized"), &bWindowIconized, false);
    pConfig->Read(wxT("WindowMaximized"), &bWindowMaximized, false);

#ifndef __WXMAC__

    Iconize(bWindowIconized);
    Maximize(bWindowMaximized);
    if (!IsIconized() && !IsMaximized()) {
        SetSize(-1, -1, iWidth, iHeight);
    }

#else   // ! __WXMAC__

    // If the user has changed the arrangement of multiple 
    // displays, make sure the window title bar is still on-screen.
    Rect titleRect = {iTop, iLeft, iTop+22, iLeft+iWidth };
    InsetRect(&titleRect, 5, 5);    // Make sure at least a 5X5 piece visible
    RgnHandle displayRgn = NewRgn();
    CopyRgn(GetGrayRgn(), displayRgn);  // Region encompassing all displays
    Rect menuRect = ((**GetMainDevice())).gdRect;
    menuRect.bottom = GetMBarHeight() + menuRect.top;
    RgnHandle menuRgn = NewRgn();
    RectRgn(menuRgn, &menuRect);                // Region hidden by menu bar
    DiffRgn(displayRgn, menuRgn, displayRgn);   // Subtract menu bar retion
    if (!RectInRgn(&titleRect, displayRgn))
        iTop = iLeft = 30;
    DisposeRgn(menuRgn);
    DisposeRgn(displayRgn);

    SetSize(iLeft, iTop, iWidth, iHeight);

#endif  // ! __WXMAC__
}

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 ) ;
}

// --------------------------------------------------------------------------------------
void HandleDrawContent(WindowRef prefsWindow)
{
    RgnHandle visibleRegion;
    ListHandle iconList;

    GetWindowProperty(prefsWindow, kAppSignature, kIconListTag, sizeof(ListHandle), NULL,
                      &iconList);

    visibleRegion = NewRgn();
    GetPortVisibleRegion(GetWindowPort(prefsWindow), visibleRegion);

    if (visibleRegion != NULL)
    {
        Boolean active = IsWindowHilited(prefsWindow);
        SInt16 pixelDepth;
        Boolean isColorDevice;

        if (active)
            SetThemeWindowBackground(prefsWindow, kThemeBrushModelessDialogBackgroundActive,
                                     false);
        else
            SetThemeWindowBackground(prefsWindow,
                                     kThemeBrushModelessDialogBackgroundInactive, false);

        EraseRgn(visibleRegion);
        UpdateControls(prefsWindow, visibleRegion);

        GetWindowDeviceDepthAndColor(prefsWindow, &pixelDepth, &isColorDevice);
        SetThemeBackground(kThemeBrushWhite, pixelDepth, isColorDevice);
        LUpdate(visibleRegion, iconList);
        drawFrameAndFocus(iconList, active, prefsWindow);
        DisposeRgn(visibleRegion);
    }
}

void handleMenuSelection(long result)
{
	int menuID, menuItem;
	RgnHandle rgnHandle = NewRgn();
	
	menuID = HiWord(result);
	menuItem = LoWord(result);
	
	if (menuID == FILE_MENU) {
		if (menuItem == FILE_SAVE)
			saveToPICTFile();
		else if (menuItem == FILE_QUIT)
			gDone = true;
		else if (menuItem == FILE_CLOSE) {
			DisposeWindow(FrontWindow());
			if (FrontWindow() == NULL)
				gDone = true;
		}
		else if (menuItem == FILE_NEW) {
		
		}
		else if (menuItem == FILE_REFRESH) {
			createImage();
			drawImage(FrontWindow());
			QDFlushPortBuffer(GetWindowPort(FrontWindow()), GetPortVisibleRegion(GetWindowPort(FrontWindow()), rgnHandle));
		}
	}
	HiliteMenu(0);
	DisposeRgn(rgnHandle);
}

boolean shellupdatenow (WindowPtr wupdate) {
	
	/*
	can be called from within one of the callbacks to force an update
	to happen immediately, without waiting for the OS to generate an
	update event.
	
	dmb 8/14/90:  can't we just call the normal update routine?  this
	should be fine from the toolbox's point of view, but will not limit 
	the update to contentrect.
	*/
#ifdef MACVERSION
	hdlregion rgn;

	rgn = getupdateregion (wupdate);

	if (!EmptyRgn (rgn))
		shellupdatewindow (wupdate);
	#if ACCESSOR_CALLS_ARE_FUNCTIONS == 1
	//Code change by Timothy Paustian Thursday, May 18, 2000 10:24:57 PM
	//Changed because calling getupdateregion returns a copy of the region
	//we have to dispose of it to prevent a memory leak
	DisposeRgn(rgn);
	#endif
#endif

#ifdef WIN95VERSION
	releasethreadglobals ();

	UpdateWindow ((HWND) wupdate);

	grabthreadglobals ();
#endif
	return (true);
	} /*shellupdatenow*/

void 
TkDestroyRegion(
    TkRegion r)
{
    RgnHandle rgn = (RgnHandle) r;
    DisposeRgn(rgn);
}

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
}

void QTCode_ForceMovieRedraw(Movie theMovie) 
{
	OSErr 		err = noErr;
	Rect		movieRect;
	RgnHandle	clipRegion = NULL;

	
		if (theMovie == NULL) goto bail;
	
		clipRegion = NewRgn();
		if (clipRegion == NULL) goto bail;
		
		GetClip(clipRegion);
		GetMovieBox(theMovie, &movieRect); 
		ClipRect(&movieRect);
	
		UpdateMovie(theMovie);
		MoviesTask(theMovie, 0);
	
		SetClip(clipRegion);
	
			/* Closure. Clean up if we have handles. */
	bail:	
	
		if	(clipRegion != NULL)
		{
			DisposeRgn(clipRegion);
		}
}

pascal OSStatus wxMacSetupControlBackground( ControlRef iControl , SInt16 iMessage , SInt16 iDepth , Boolean iIsColor )
{
    OSStatus status = noErr ;
    switch( iMessage )
    {
        case kControlMsgSetUpBackground :
            {
                wxControl*  wx = (wxControl*) GetControlReference( iControl ) ;
                if ( wx != NULL && wx->IsKindOf( CLASSINFO( wxControl ) ) )
                {
                    wxDC::MacSetupBackgroundForCurrentPort( wx->MacGetBackgroundBrush() ) ;
#if TARGET_CARBON
                    // under classic this would lead to partial redraws
                    RgnHandle clip = NewRgn() ;
                    int x = 0 , y = 0;

                    wx->MacWindowToRootWindow( &x,&y ) ;
                    CopyRgn( (RgnHandle) wx->MacGetVisibleRegion(false).GetWXHRGN() , clip ) ;
                    OffsetRgn( clip , x , y ) ;
                    SetClip( clip ) ;
                    DisposeRgn( clip ) ;
#endif
                }
                else
                {
                    status = paramErr ;
                }
            }
            break ;
        default :
            status = paramErr ;
            break ;
    }
    return status ;
}

void LCD_resize(Lcd *x)
{
	Rect	r;
	short		hor,ver;

#ifdef debug
	post("LCD_Resize");
#endif

	r = x->lcd_box.b_rect;
	
	hor = x->cols = FixRound(FixRatio(((r.right-r.left-(2*BORDER_WIDTH))),x->f_width));
	ver = x->rows = FixRound(FixRatio(((r.bottom-r.top-(2*BORDER_HEIGHT))),x->f_height));

#ifdef FORCEDResize
	x->lcd_box.b_rect.right = r.left + (2*BORDER_WIDTH) + hor*x->f_width;
	x->lcd_box.b_rect.bottom = r.top + (2*BORDER_HEIGHT) + ver*x->f_height;
#endif

	if (x->lcd_region)
		DisposeRgn(x->lcd_region);
	x->lcd_oldRect = r = x->lcd_box.b_rect;
	InsetRect(&r,1,1);
	x->lcd_region = NewRgn();
	RectRgn(x->lcd_region,&r);  /* DDZ simpler way to make a rectangular region */
}