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- /****************************************************************************
- ** $Id: qt/qwmatrix.h 3.0.0 edited Aug 14 10:49 $
- **
- ** Definition of QWMatrix class
- **
- ** Created : 941020
- **
- ** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
- **
- ** This file is part of the kernel module of the Qt GUI Toolkit.
- **
- ** This file may be distributed under the terms of the Q Public License
- ** as defined by Trolltech AS of Norway and appearing in the file
- ** LICENSE.QPL included in the packaging of this file.
- **
- ** This file may be distributed and/or modified under the terms of the
- ** GNU General Public License version 2 as published by the Free Software
- ** Foundation and appearing in the file LICENSE.GPL included in the
- ** packaging of this file.
- **
- ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
- ** licenses may use this file in accordance with the Qt Commercial License
- ** Agreement provided with the Software.
- **
- ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
- ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- **
- ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
- ** information about Qt Commercial License Agreements.
- ** See http://www.trolltech.com/qpl/ for QPL licensing information.
- ** See http://www.trolltech.com/gpl/ for GPL licensing information.
- **
- ** Contact info@trolltech.com if any conditions of this licensing are
- ** not clear to you.
- **
- **********************************************************************/
-
- #ifndef QWMATRIX_H
- #define QWMATRIX_H
-
- #ifndef QT_H
- #include "qwindowdefs.h"
- #include "qpointarray.h"
- #include "qrect.h"
- #endif // QT_H
-
- #ifndef QT_NO_WMATRIX
-
-
- class Q_EXPORT QWMatrix // 2D transform matrix
- {
- public:
- QWMatrix();
- QWMatrix( double m11, double m12, double m21, double m22,
- double dx, double dy );
-
- void setMatrix( double m11, double m12, double m21, double m22,
- double dx, double dy );
-
- double m11() const { return _m11; }
- double m12() const { return _m12; }
- double m21() const { return _m21; }
- double m22() const { return _m22; }
- double dx() const { return _dx; }
- double dy() const { return _dy; }
-
- void map( int x, int y, int *tx, int *ty ) const;
- void map( double x, double y, double *tx, double *ty ) const;
- QRect mapRect( const QRect & ) const;
-
- QPoint map( const QPoint &p ) const { return operator *( p ); }
- QRect map( const QRect &r ) const { return mapRect ( r ); }
- QPointArray map( const QPointArray &a ) const { return operator * ( a ); }
-
- void reset();
- bool isIdentity() const;
-
- QWMatrix &translate( double dx, double dy );
- QWMatrix &scale( double sx, double sy );
- QWMatrix &shear( double sh, double sv );
- QWMatrix &rotate( double a );
-
- bool isInvertible() const { return (_m11*_m22 - _m12*_m21) != 0; }
- QWMatrix invert( bool * = 0 ) const;
-
- bool operator==( const QWMatrix & ) const;
- bool operator!=( const QWMatrix & ) const;
- QWMatrix &operator*=( const QWMatrix & );
-
- /* we use matrix multiplication semantics here */
- QPoint operator * (const QPoint & ) const;
- QRegion operator * (const QRect & ) const;
- QRegion operator * (const QRegion & ) const;
- QPointArray operator * ( const QPointArray &a ) const;
-
- private:
- QWMatrix &bmul( const QWMatrix & );
- double _m11, _m12;
- double _m21, _m22;
- double _dx, _dy;
- };
-
-
- Q_EXPORT QWMatrix operator*( const QWMatrix &, const QWMatrix & );
-
-
- /*****************************************************************************
- QWMatrix stream functions
- *****************************************************************************/
-
- Q_EXPORT QDataStream &operator<<( QDataStream &, const QWMatrix & );
- Q_EXPORT QDataStream &operator>>( QDataStream &, QWMatrix & );
-
-
- #endif // QT_NO_WMATRIX
-
- #endif // QWMATRIX_H
-