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207 lines
6.7 KiB
207 lines
6.7 KiB
15 years ago
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QMATRIX_H
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#define QMATRIX_H
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#include <QtGui/qpolygon.h>
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#include <QtGui/qregion.h>
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#include <QtGui/qwindowdefs.h>
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#include <QtCore/qline.h>
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#include <QtCore/qpoint.h>
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#include <QtCore/qrect.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Gui)
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class QPainterPath;
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class QVariant;
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class Q_GUI_EXPORT QMatrix // 2D transform matrix
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{
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public:
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inline explicit QMatrix(Qt::Initialization) {}
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QMatrix();
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QMatrix(qreal m11, qreal m12, qreal m21, qreal m22,
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qreal dx, qreal dy);
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QMatrix(const QMatrix &matrix);
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void setMatrix(qreal m11, qreal m12, qreal m21, qreal m22,
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qreal dx, qreal dy);
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qreal m11() const { return _m11; }
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qreal m12() const { return _m12; }
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qreal m21() const { return _m21; }
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qreal m22() const { return _m22; }
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qreal dx() const { return _dx; }
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qreal 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(qreal x, qreal y, qreal *tx, qreal *ty) const;
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QRect mapRect(const QRect &) const;
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QRectF mapRect(const QRectF &) const;
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QPoint map(const QPoint &p) const;
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QPointF map(const QPointF&p) const;
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QLine map(const QLine &l) const;
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QLineF map(const QLineF &l) const;
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QPolygonF map(const QPolygonF &a) const;
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QPolygon map(const QPolygon &a) const;
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QRegion map(const QRegion &r) const;
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QPainterPath map(const QPainterPath &p) const;
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QPolygon mapToPolygon(const QRect &r) const;
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void reset();
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inline bool isIdentity() const;
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QMatrix &translate(qreal dx, qreal dy);
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QMatrix &scale(qreal sx, qreal sy);
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QMatrix &shear(qreal sh, qreal sv);
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QMatrix &rotate(qreal a);
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bool isInvertible() const { return !qFuzzyIsNull(_m11*_m22 - _m12*_m21); }
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qreal determinant() const { return _m11*_m22 - _m12*_m21; }
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#ifdef QT_DEPRECATED
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QT_DEPRECATED qreal det() const { return _m11*_m22 - _m12*_m21; }
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#endif
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QMatrix inverted(bool *invertible = 0) const;
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bool operator==(const QMatrix &) const;
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bool operator!=(const QMatrix &) const;
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QMatrix &operator*=(const QMatrix &);
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QMatrix operator*(const QMatrix &o) const;
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QMatrix &operator=(const QMatrix &);
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operator QVariant() const;
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#ifdef QT3_SUPPORT
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inline QT3_SUPPORT QMatrix invert(bool *invertible=0) const { return inverted(invertible); }
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inline QT3_SUPPORT QRect map(const QRect &r) const { return mapRect(r); }
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QT3_SUPPORT QRegion mapToRegion(const QRect &r) const;
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#endif
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private:
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inline QMatrix(bool)
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: _m11(1.)
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, _m12(0.)
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, _m21(0.)
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, _m22(1.)
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, _dx(0.)
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, _dy(0.) {}
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inline QMatrix(qreal am11, qreal am12, qreal am21, qreal am22, qreal adx, qreal ady, bool)
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: _m11(am11)
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, _m12(am12)
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, _m21(am21)
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, _m22(am22)
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, _dx(adx)
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, _dy(ady) {}
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friend class QTransform;
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qreal _m11, _m12;
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qreal _m21, _m22;
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qreal _dx, _dy;
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};
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Q_DECLARE_TYPEINFO(QMatrix, Q_MOVABLE_TYPE);
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// mathematical semantics
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Q_GUI_EXPORT_INLINE QPoint operator*(const QPoint &p, const QMatrix &m)
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{ return m.map(p); }
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Q_GUI_EXPORT_INLINE QPointF operator*(const QPointF &p, const QMatrix &m)
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{ return m.map(p); }
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Q_GUI_EXPORT_INLINE QLineF operator*(const QLineF &l, const QMatrix &m)
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{ return m.map(l); }
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Q_GUI_EXPORT_INLINE QLine operator*(const QLine &l, const QMatrix &m)
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{ return m.map(l); }
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Q_GUI_EXPORT_INLINE QPolygon operator *(const QPolygon &a, const QMatrix &m)
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{ return m.map(a); }
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Q_GUI_EXPORT_INLINE QPolygonF operator *(const QPolygonF &a, const QMatrix &m)
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{ return m.map(a); }
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Q_GUI_EXPORT_INLINE QRegion operator *(const QRegion &r, const QMatrix &m)
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{ return m.map(r); }
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Q_GUI_EXPORT QPainterPath operator *(const QPainterPath &p, const QMatrix &m);
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inline bool QMatrix::isIdentity() const
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{
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return qFuzzyIsNull(_m11 - 1) && qFuzzyIsNull(_m22 - 1) && qFuzzyIsNull(_m12)
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&& qFuzzyIsNull(_m21) && qFuzzyIsNull(_dx) && qFuzzyIsNull(_dy);
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}
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inline bool qFuzzyCompare(const QMatrix& m1, const QMatrix& m2)
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{
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return qFuzzyCompare(m1.m11(), m2.m11())
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&& qFuzzyCompare(m1.m12(), m2.m12())
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&& qFuzzyCompare(m1.m21(), m2.m21())
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&& qFuzzyCompare(m1.m22(), m2.m22())
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&& qFuzzyCompare(m1.dx(), m2.dx())
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&& qFuzzyCompare(m1.dy(), m2.dy());
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}
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/*****************************************************************************
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QMatrix stream functions
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*****************************************************************************/
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#ifndef QT_NO_DATASTREAM
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Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QMatrix &);
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Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QMatrix &);
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#endif
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#ifndef QT_NO_DEBUG_STREAM
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Q_GUI_EXPORT QDebug operator<<(QDebug, const QMatrix &);
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#endif
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#ifdef QT3_SUPPORT
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QT_BEGIN_INCLUDE_NAMESPACE
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#include <QtGui/qwmatrix.h>
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QT_END_INCLUDE_NAMESPACE
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#endif
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QMATRIX_H
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