/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the QtGui module of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
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** In addition, as a special exception, Nokia gives you certain additional | |
** rights. These rights are described in the Nokia Qt LGPL Exception | |
** version 1.1, 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: | |
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** $QT_END_LICENSE$ | |
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****************************************************************************/ | |
#ifndef QTRANSFORM_H | |
#define QTRANSFORM_H | |
#include <QtGui/qmatrix.h> | |
#include <QtGui/qpainterpath.h> | |
#include <QtGui/qpolygon.h> | |
#include <QtGui/qregion.h> | |
#include <QtGui/qwindowdefs.h> | |
#include <QtCore/qline.h> | |
#include <QtCore/qpoint.h> | |
#include <QtCore/qrect.h> | |
#if defined(Q_OS_VXWORKS) && defined(m_type) | |
# undef m_type | |
#endif | |
QT_BEGIN_HEADER | |
QT_BEGIN_NAMESPACE | |
QT_MODULE(Gui) | |
class QVariant; | |
class Q_GUI_EXPORT QTransform | |
{ | |
public: | |
enum TransformationType { | |
TxNone = 0x00, | |
TxTranslate = 0x01, | |
TxScale = 0x02, | |
TxRotate = 0x04, | |
TxShear = 0x08, | |
TxProject = 0x10 | |
}; | |
inline explicit QTransform(Qt::Initialization) : affine(Qt::Uninitialized) {} | |
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<TransformationType>(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; | |
if (m_dirty < TxScale) | |
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 |