/**************************************************************************** ** ** 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 QTRANSFORM_H #define QTRANSFORM_H #include #include #include #include #include #include #include #include QT_BEGIN_HEADER QT_BEGIN_NAMESPACE QT_MODULE(Gui) class QVariant; class Q_GUI_EXPORT QTransform { Q_ENUMS(TransformationType) public: enum TransformationType { TxNone = 0x00, TxTranslate = 0x01, TxScale = 0x02, TxRotate = 0x04, TxShear = 0x08, TxProject = 0x10 }; QTransform(); QTransform(qreal h11, qreal h12, qreal h13, qreal h21, qreal h22, qreal h23, qreal h31, qreal h32, qreal h33 = 1.0); QTransform(qreal h11, qreal h12, qreal h21, qreal h22, qreal dx, qreal dy); explicit QTransform(const QMatrix &mtx); bool isAffine() const; bool isIdentity() const; bool isInvertible() const; bool isScaling() const; bool isRotating() const; bool isTranslating() const; TransformationType type() const; inline qreal determinant() const; qreal det() const; qreal m11() const; qreal m12() const; qreal m13() const; qreal m21() const; qreal m22() const; qreal m23() const; qreal m31() const; qreal m32() const; qreal m33() const; qreal dx() const; qreal dy() const; void setMatrix(qreal m11, qreal m12, qreal m13, qreal m21, qreal m22, qreal m23, qreal m31, qreal m32, qreal m33); QTransform inverted(bool *invertible = 0) const; QTransform adjoint() const; QTransform transposed() const; QTransform &translate(qreal dx, qreal dy); QTransform &scale(qreal sx, qreal sy); QTransform &shear(qreal sh, qreal sv); QTransform &rotate(qreal a, Qt::Axis axis = Qt::ZAxis); QTransform &rotateRadians(qreal a, Qt::Axis axis = Qt::ZAxis); static bool squareToQuad(const QPolygonF &square, QTransform &result); static bool quadToSquare(const QPolygonF &quad, QTransform &result); static bool quadToQuad(const QPolygonF &one, const QPolygonF &two, QTransform &result); bool operator==(const QTransform &) const; bool operator!=(const QTransform &) const; QTransform &operator*=(const QTransform &); QTransform operator*(const QTransform &o) const; QTransform &operator=(const QTransform &); operator QVariant() const; void reset(); 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; QRect mapRect(const QRect &) const; QRectF mapRect(const QRectF &) const; void map(int x, int y, int *tx, int *ty) const; void map(qreal x, qreal y, qreal *tx, qreal *ty) const; const QMatrix &toAffine() const; QTransform &operator*=(qreal div); QTransform &operator/=(qreal div); QTransform &operator+=(qreal div); QTransform &operator-=(qreal div); static QTransform fromTranslate(qreal dx, qreal dy); static QTransform fromScale(qreal dx, qreal dy); private: inline QTransform(qreal h11, qreal h12, qreal h13, qreal h21, qreal h22, qreal h23, qreal h31, qreal h32, qreal h33, bool) : affine(h11, h12, h21, h22, h31, h32, true) , m_13(h13), m_23(h23), m_33(h33) , m_type(TxNone) , m_dirty(TxProject) {} inline QTransform(bool) : affine(true) , m_13(0), m_23(0), m_33(1) , m_type(TxNone) , m_dirty(TxNone) {} inline TransformationType inline_type() const; QMatrix affine; qreal m_13; qreal m_23; qreal m_33; mutable uint m_type : 5; mutable uint m_dirty : 5; class Private; Private *d; }; Q_DECLARE_TYPEINFO(QTransform, Q_MOVABLE_TYPE); /******* inlines *****/ inline QTransform::TransformationType QTransform::inline_type() const { if (m_dirty == TxNone) return static_cast(m_type); return type(); } inline bool QTransform::isAffine() const { return inline_type() < TxProject; } inline bool QTransform::isIdentity() const { return inline_type() == TxNone; } inline bool QTransform::isInvertible() const { return !qFuzzyIsNull(determinant()); } inline bool QTransform::isScaling() const { return type() >= TxScale; } inline bool QTransform::isRotating() const { return inline_type() >= TxRotate; } inline bool QTransform::isTranslating() const { return inline_type() >= TxTranslate; } inline qreal QTransform::determinant() const { return affine._m11*(m_33*affine._m22-affine._dy*m_23) - affine._m21*(m_33*affine._m12-affine._dy*m_13)+affine._dx*(m_23*affine._m12-affine._m22*m_13); } inline qreal QTransform::det() const { return determinant(); } inline qreal QTransform::m11() const { return affine._m11; } inline qreal QTransform::m12() const { return affine._m12; } inline qreal QTransform::m13() const { return m_13; } inline qreal QTransform::m21() const { return affine._m21; } inline qreal QTransform::m22() const { return affine._m22; } inline qreal QTransform::m23() const { return m_23; } inline qreal QTransform::m31() const { return affine._dx; } inline qreal QTransform::m32() const { return affine._dy; } inline qreal QTransform::m33() const { return m_33; } inline qreal QTransform::dx() const { return affine._dx; } inline qreal QTransform::dy() const { return affine._dy; } inline QTransform &QTransform::operator*=(qreal num) { if (num == 1.) return *this; affine._m11 *= num; affine._m12 *= num; m_13 *= num; affine._m21 *= num; affine._m22 *= num; m_23 *= num; affine._dx *= num; affine._dy *= num; m_33 *= num; m_dirty |= TxScale; return *this; } inline QTransform &QTransform::operator/=(qreal div) { if (div == 0) return *this; div = 1/div; return operator*=(div); } inline QTransform &QTransform::operator+=(qreal num) { if (num == 0) return *this; affine._m11 += num; affine._m12 += num; m_13 += num; affine._m21 += num; affine._m22 += num; m_23 += num; affine._dx += num; affine._dy += num; m_33 += num; m_dirty |= TxProject; return *this; } inline QTransform &QTransform::operator-=(qreal num) { if (num == 0) return *this; affine._m11 -= num; affine._m12 -= num; m_13 -= num; affine._m21 -= num; affine._m22 -= num; m_23 -= num; affine._dx -= num; affine._dy -= num; m_33 -= num; m_dirty |= TxProject; return *this; } inline bool qFuzzyCompare(const QTransform& t1, const QTransform& t2) { return qFuzzyCompare(t1.m11(), t2.m11()) && qFuzzyCompare(t1.m12(), t2.m12()) && qFuzzyCompare(t1.m13(), t2.m13()) && qFuzzyCompare(t1.m21(), t2.m21()) && qFuzzyCompare(t1.m22(), t2.m22()) && qFuzzyCompare(t1.m23(), t2.m23()) && qFuzzyCompare(t1.m31(), t2.m31()) && qFuzzyCompare(t1.m32(), t2.m32()) && qFuzzyCompare(t1.m33(), t2.m33()); } /****** stream functions *******************/ #ifndef QT_NO_DATASTREAM Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTransform &); Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTransform &); #endif #ifndef QT_NO_DEBUG_STREAM Q_GUI_EXPORT QDebug operator<<(QDebug, const QTransform &); #endif /****** end stream functions *******************/ // mathematical semantics Q_GUI_EXPORT_INLINE QPoint operator*(const QPoint &p, const QTransform &m) { return m.map(p); } Q_GUI_EXPORT_INLINE QPointF operator*(const QPointF &p, const QTransform &m) { return m.map(p); } Q_GUI_EXPORT_INLINE QLineF operator*(const QLineF &l, const QTransform &m) { return m.map(l); } Q_GUI_EXPORT_INLINE QLine operator*(const QLine &l, const QTransform &m) { return m.map(l); } Q_GUI_EXPORT_INLINE QPolygon operator *(const QPolygon &a, const QTransform &m) { return m.map(a); } Q_GUI_EXPORT_INLINE QPolygonF operator *(const QPolygonF &a, const QTransform &m) { return m.map(a); } Q_GUI_EXPORT_INLINE QRegion operator *(const QRegion &r, const QTransform &m) { return m.map(r); } Q_GUI_EXPORT_INLINE QPainterPath operator *(const QPainterPath &p, const QTransform &m) { return m.map(p); } Q_GUI_EXPORT_INLINE QTransform operator *(const QTransform &a, qreal n) { QTransform t(a); t *= n; return t; } Q_GUI_EXPORT_INLINE QTransform operator /(const QTransform &a, qreal n) { QTransform t(a); t /= n; return t; } Q_GUI_EXPORT_INLINE QTransform operator +(const QTransform &a, qreal n) { QTransform t(a); t += n; return t; } Q_GUI_EXPORT_INLINE QTransform operator -(const QTransform &a, qreal n) { QTransform t(a); t -= n; return t; } QT_END_NAMESPACE QT_END_HEADER #endif