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130 lines
4.5 KiB
130 lines
4.5 KiB
/****************************************************************************
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**
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** Definition of QWMatrix class
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**
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** Created : 941020
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of the kernel module of the Qt GUI Toolkit.
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**
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** This file may be used under the terms of the GNU General
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** Public License versions 2.0 or 3.0 as published by the Free
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** Software Foundation and appearing in the files LICENSE.GPL2
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** and LICENSE.GPL3 included in the packaging of this file.
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** Alternatively you may (at your option) use any later version
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** of the GNU General Public License if such license has been
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** publicly approved by Trolltech ASA (or its successors, if any)
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** and the KDE Free Qt Foundation.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/.
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** If you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** This file may be used under the terms of the Q Public License as
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** defined by Trolltech ASA and appearing in the file LICENSE.QPL
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** included in the packaging of this file. Licensees holding valid Qt
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** Commercial licenses may use this file in accordance with the Qt
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** Commercial License Agreement provided with the Software.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
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** herein.
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**
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**********************************************************************/
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#ifndef QWMATRIX_H
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#define QWMATRIX_H
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#ifndef QT_H
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#include "qwindowdefs.h"
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#include "qpointarray.h"
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#include "qrect.h"
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#include "qregion.h"
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#endif // QT_H
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#ifndef QT_NO_WMATRIX
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class Q_EXPORT QWMatrix // 2D transform matrix
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{
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public:
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QWMatrix();
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QWMatrix( double m11, double m12, double m21, double m22,
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double dx, double dy );
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void setMatrix( double m11, double m12, double m21, double m22,
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double dx, double dy );
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double m11() const { return _m11; }
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double m12() const { return _m12; }
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double m21() const { return _m21; }
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double m22() const { return _m22; }
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double dx() const { return _dx; }
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double dy() const { return _dy; }
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void map( int x, int y, int *tx, int *ty ) const;
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void map( double x, double y, double *tx, double *ty ) const;
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QRect mapRect( const QRect & ) const;
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QPoint map( const QPoint &p ) const { return operator *( p ); }
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QRect map( const QRect &r ) const { return mapRect ( r ); }
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QPointArray map( const QPointArray &a ) const { return operator * ( a ); }
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QRegion map( const QRegion &r ) const { return operator *( r ); }
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QRegion mapToRegion( const QRect &r ) const { return operator *( r ); }
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QPointArray mapToPolygon( const QRect &r ) const;
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void reset();
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bool isIdentity() const;
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QWMatrix &translate( double dx, double dy );
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QWMatrix &scale( double sx, double sy );
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QWMatrix &shear( double sh, double sv );
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QWMatrix &rotate( double a );
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bool isInvertible() const { return (_m11*_m22 - _m12*_m21) != 0; }
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double det() const { return _m11*_m22 - _m12*_m21; }
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QWMatrix invert( bool * = 0 ) const;
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bool operator==( const QWMatrix & ) const;
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bool operator!=( const QWMatrix & ) const;
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QWMatrix &operator*=( const QWMatrix & );
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/* we use matrix multiplication semantics here */
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QPoint operator * (const QPoint & ) const;
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QRegion operator * (const QRect & ) const;
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QRegion operator * (const QRegion & ) const;
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QPointArray operator * ( const QPointArray &a ) const;
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enum TransformationMode {
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Points, Areas
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};
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static void setTransformationMode( QWMatrix::TransformationMode m );
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static TransformationMode transformationMode();
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private:
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double _m11, _m12;
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double _m21, _m22;
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double _dx, _dy;
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};
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Q_EXPORT QWMatrix operator*( const QWMatrix &, const QWMatrix & );
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/*****************************************************************************
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QWMatrix stream functions
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*****************************************************************************/
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Q_EXPORT QDataStream &operator<<( QDataStream &, const QWMatrix & );
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Q_EXPORT QDataStream &operator>>( QDataStream &, QWMatrix & );
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#endif // QT_NO_WMATRIX
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#endif // QWMATRIX_H
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