Long live Qt 4.5!

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diff --git a/src/gui/painting/qtransform.h b/src/gui/painting/qtransform.h
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+/****************************************************************************
+**
+** 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 <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>
+
+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:
+    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 bool QTransform::isAffine() const
+{
+    return type() < TxProject;
+}
+inline bool QTransform::isIdentity() const
+{
+    return type() == TxNone;
+}
+
+inline bool QTransform::isInvertible() const
+{
+    return !qFuzzyCompare(determinant() + 1, 1);
+}
+
+inline bool QTransform::isScaling() const
+{
+    return type() >= TxScale;
+}
+inline bool QTransform::isRotating() const
+{
+    return type() >= TxRotate;
+}
+
+inline bool QTransform::isTranslating() const
+{
+    return 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)
+{
+    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)
+{
+    div = 1/div;
+    return operator*=(div);
+}
+inline QTransform &QTransform::operator+=(qreal num)
+{
+    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)
+{
+    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;
+}
+
+/****** stream functions *******************/
+Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTransform &);
+Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTransform &);
+
+#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