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# ntqregion.h

This is the verbatim text of the ntqregion.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/ntqregion.h   3.3.8   edited Jan 11 14:38 $
    **
    ** Definition of TQRegion class
    **
    ** Created : 940514
    **
    ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of the kernel module of the TQt GUI Toolkit.
    **
    ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file. Alternatively you may (at your option) use any
    ** later version of the GNU General Public License if such license has
    ** been publicly approved by Trolltech ASA (or its successors, if any)
    ** and the KDE Free TQt Foundation.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/.
    ** If you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** This file may be used under the terms of the Q Public License as
    ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
    ** included in the packaging of this file.  Licensees holding valid TQt
    ** Commercial licenses may use this file in accordance with the TQt
    ** Commercial License Agreement provided with the Software.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
    ** herein.
    **
    **********************************************************************/

    #ifndef TQREGION_H
    #define TQREGION_H

    #ifndef QT_H
    #include "ntqshared.h"
    #include "ntqrect.h"
    #endif // QT_H

    #ifdef TQ_WS_X11
    struct TQRegionPrivate;
    #endif

    class TQ_EXPORT TQRegion
    {
    public:
        enum RegionType { Rectangle, Ellipse };

        TQRegion();
        TQRegion( int x, int y, int w, int h, RegionType = Rectangle );
        TQRegion( const TQRect &, RegionType = Rectangle );
        TQRegion( const TQPointArray &, bool winding=FALSE );
        TQRegion( const TQRegion & );
        TQRegion( const TQBitmap & );
       ~TQRegion();
        TQRegion &operator=( const TQRegion & );

        bool    isNull()   const;
        bool    isEmpty()  const;

        bool    contains( const TQPoint &p ) const;
        bool    contains( const TQRect &r )	const;

        void    translate( int dx, int dy );

        TQRegion unite( const TQRegion & )	const;
        TQRegion intersect( const TQRegion &) const;
        TQRegion subtract( const TQRegion & ) const;
        TQRegion eor( const TQRegion & )	const;

        TQRect   boundingRect() const;
        TQMemArray<TQRect> rects() const;
        void setRects( const TQRect *, int );

        const TQRegion operator|( const TQRegion & ) const;
        const TQRegion operator+( const TQRegion & ) const;
        const TQRegion operator&( const TQRegion & ) const;
        const TQRegion operator-( const TQRegion & ) const;
        const TQRegion operator^( const TQRegion & ) const;
        TQRegion& operator|=( const TQRegion & );
        TQRegion& operator+=( const TQRegion & );
        TQRegion& operator&=( const TQRegion & );
        TQRegion& operator-=( const TQRegion & );
        TQRegion& operator^=( const TQRegion & );

        bool    operator==( const TQRegion & )  const;
        bool    operator!=( const TQRegion &r ) const
    			{ return !(operator==(r)); }

    #if defined(TQ_WS_WIN)
        HRGN    handle() const { return data->rgn; }
    #elif defined(TQ_WS_X11)
        Region handle() const { if(!data->rgn) updateX11Region(); return data->rgn; }
    #elif defined(TQ_WS_MAC)
        RgnHandle handle(bool require_rgn=FALSE) const;
    #elif defined(TQ_WS_QWS)
        // TQGfx_QWS needs this for region drawing
        void * handle() const { return data->rgn; }
    #endif

    #ifndef TQT_NO_DATASTREAM
        friend TQ_EXPORT TQDataStream &operator<<( TQDataStream &, const TQRegion & );
        friend TQ_EXPORT TQDataStream &operator>>( TQDataStream &, TQRegion & );
    #endif
    private:
        TQRegion( bool );
        TQRegion copy() const;
        void    detach();
    #if defined(TQ_WS_WIN)
        TQRegion winCombine( const TQRegion &, int ) const;
    #endif
    #if defined(TQ_WS_X11)
        void updateX11Region() const;
        void *clipRectangles( int &num ) const;
        friend void *qt_getClipRects( const TQRegion &, int & );
    #endif
        void    exec( const TQByteArray &, int ver = 0 );
        struct TQRegionData : public TQShared {
    #if defined(TQ_WS_WIN)
    	HRGN   rgn;
    #elif defined(TQ_WS_X11)
    	Region rgn;
    	void *xrectangles;
    	TQRegionPrivate *region;
    #elif defined(TQ_WS_MAC)
    	uint is_rect:1;
    	TQRect rect;
    	RgnHandle rgn;
    #elif defined(TQ_WS_QWS)
    	void * rgn;
    #endif
    	bool   is_null;
        } *data;
    #if defined(TQ_WS_MAC)
        friend struct qt_mac_rgn_data_cache;
        friend TQRegionData *qt_mac_get_rgn_data();
        friend void qt_mac_free_rgn_data(TQRegionData *);
        void rectifyRegion();
    #elif defined(TQ_WS_WIN)
        friend class TQETWidget;
    #endif

    };

    #define TQRGN_SETRECT		1		// region stream commands
    #define TQRGN_SETELLIPSE		2		//  (these are internal)
    #define TQRGN_SETPTARRAY_ALT	3
    #define TQRGN_SETPTARRAY_WIND	4
    #define TQRGN_TRANSLATE		5
    #define TQRGN_OR			6
    #define TQRGN_AND		7
    #define TQRGN_SUB		8
    #define TQRGN_XOR		9
    #define TQRGN_RECTS	       10

    /*****************************************************************************
      TQRegion stream functions
     *****************************************************************************/

    #ifndef TQT_NO_DATASTREAM
    TQ_EXPORT TQDataStream &operator<<( TQDataStream &, const TQRegion & );
    TQ_EXPORT TQDataStream &operator>>( TQDataStream &, TQRegion & );
    #endif

    #endif // TQREGION_H