/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Qt Software Information (qt-info@nokia.com) ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the either Technology Preview License Agreement or the ** Beta Release License Agreement. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at qt-sales@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QMATRIX_H #define QMATRIX_H #include #include #include #include #include #include QT_BEGIN_HEADER QT_BEGIN_NAMESPACE QT_MODULE(Gui) class QPainterPath; class QVariant; class Q_GUI_EXPORT QMatrix // 2D transform matrix { public: QMatrix(); QMatrix(qreal m11, qreal m12, qreal m21, qreal m22, qreal dx, qreal dy); QMatrix(const QMatrix &matrix); void setMatrix(qreal m11, qreal m12, qreal m21, qreal m22, qreal dx, qreal dy); qreal m11() const { return _m11; } qreal m12() const { return _m12; } qreal m21() const { return _m21; } qreal m22() const { return _m22; } qreal dx() const { return _dx; } qreal dy() const { return _dy; } void map(int x, int y, int *tx, int *ty) const; void map(qreal x, qreal y, qreal *tx, qreal *ty) const; QRect mapRect(const QRect &) const; QRectF mapRect(const QRectF &) const; QPoint map(const QPoint &p) const; QPointF map(const QPointF&p) const; QLine map(const QLine &l) const; QLineF map(const QLineF &l) const; QPolygonF map(const QPolygonF &a) const; QPolygon map(const QPolygon &a) const; QRegion map(const QRegion &r) const; QPainterPath map(const QPainterPath &p) const; QPolygon mapToPolygon(const QRect &r) const; void reset(); inline bool isIdentity() const; QMatrix &translate(qreal dx, qreal dy); QMatrix &scale(qreal sx, qreal sy); QMatrix &shear(qreal sh, qreal sv); QMatrix &rotate(qreal a); bool isInvertible() const { return !qFuzzyIsNull(_m11*_m22 - _m12*_m21); } qreal det() const { return _m11*_m22 - _m12*_m21; } QMatrix inverted(bool *invertible = 0) const; bool operator==(const QMatrix &) const; bool operator!=(const QMatrix &) const; QMatrix &operator*=(const QMatrix &); QMatrix operator*(const QMatrix &o) const; QMatrix &operator=(const QMatrix &); operator QVariant() const; #ifdef QT3_SUPPORT inline QT3_SUPPORT QMatrix invert(bool *invertible=0) const { return inverted(invertible); } inline QT3_SUPPORT QRect map(const QRect &r) const { return mapRect(r); } QT3_SUPPORT QRegion mapToRegion(const QRect &r) const; #endif private: inline QMatrix(bool) : _m11(1.) , _m12(0.) , _m21(0.) , _m22(1.) , _dx(0.) , _dy(0.) {} inline QMatrix(qreal m11, qreal m12, qreal m21, qreal m22, qreal dx, qreal dy, bool) : _m11(m11) , _m12(m12) , _m21(m21) , _m22(m22) , _dx(dx) , _dy(dy) {} friend class QTransform; qreal _m11, _m12; qreal _m21, _m22; qreal _dx, _dy; }; Q_DECLARE_TYPEINFO(QMatrix, Q_MOVABLE_TYPE); // mathematical semantics Q_GUI_EXPORT_INLINE QPoint operator*(const QPoint &p, const QMatrix &m) { return m.map(p); } Q_GUI_EXPORT_INLINE QPointF operator*(const QPointF &p, const QMatrix &m) { return m.map(p); } Q_GUI_EXPORT_INLINE QLineF operator*(const QLineF &l, const QMatrix &m) { return m.map(l); } Q_GUI_EXPORT_INLINE QLine operator*(const QLine &l, const QMatrix &m) { return m.map(l); } Q_GUI_EXPORT_INLINE QPolygon operator *(const QPolygon &a, const QMatrix &m) { return m.map(a); } Q_GUI_EXPORT_INLINE QPolygonF operator *(const QPolygonF &a, const QMatrix &m) { return m.map(a); } Q_GUI_EXPORT_INLINE QRegion operator *(const QRegion &r, const QMatrix &m) { return m.map(r); } Q_GUI_EXPORT QPainterPath operator *(const QPainterPath &p, const QMatrix &m); inline bool QMatrix::isIdentity() const { return qFuzzyIsNull(_m11 - 1) && qFuzzyIsNull(_m22 - 1) && qFuzzyIsNull(_m12) && qFuzzyIsNull(_m21) && qFuzzyIsNull(_dx) && qFuzzyIsNull(_dy); } inline bool qFuzzyCompare(const QMatrix& m1, const QMatrix& m2) { return qFuzzyCompare(m1.m11(), m2.m11()) && qFuzzyCompare(m1.m12(), m2.m12()) && qFuzzyCompare(m1.m21(), m2.m21()) && qFuzzyCompare(m1.m22(), m2.m22()) && qFuzzyCompare(m1.dx(), m2.dx()) && qFuzzyCompare(m1.dy(), m2.dy()); } /***************************************************************************** QMatrix stream functions *****************************************************************************/ #ifndef QT_NO_DATASTREAM Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QMatrix &); Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QMatrix &); #endif #ifndef QT_NO_DEBUG_STREAM Q_GUI_EXPORT QDebug operator<<(QDebug, const QMatrix &); #endif #ifdef QT3_SUPPORT QT_BEGIN_INCLUDE_NAMESPACE #include QT_END_INCLUDE_NAMESPACE #endif QT_END_NAMESPACE QT_END_HEADER #endif // QMATRIX_H