Long live Qt 4.5!

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diff --git a/src/corelib/tools/qline.h b/src/corelib/tools/qline.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 QtCore 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 QLINE_H
+#define QLINE_H
+
+#include <QtCore/qpoint.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+/*******************************************************************************
+ * class QLine
+ *******************************************************************************/
+
+class Q_CORE_EXPORT QLine
+{
+public:
+    inline QLine();
+    inline QLine(const QPoint &pt1, const QPoint &pt2);
+    inline QLine(int x1, int y1, int x2, int y2);
+
+    inline bool isNull() const;
+
+    inline QPoint p1() const;
+    inline QPoint p2() const;
+
+    inline int x1() const;
+    inline int y1() const;
+
+    inline int x2() const;
+    inline int y2() const;
+
+    inline int dx() const;
+    inline int dy() const;
+
+    inline void translate(const QPoint &p);
+    inline void translate(int dx, int dy);
+
+    inline QLine translated(const QPoint &p) const;
+    inline QLine translated(int dx, int dy) const;
+
+    inline void setP1(const QPoint &p1);
+    inline void setP2(const QPoint &p2);
+    inline void setPoints(const QPoint &p1, const QPoint &p2);
+    inline void setLine(int x1, int y1, int x2, int y2);
+
+    inline bool operator==(const QLine &d) const;
+    inline bool operator!=(const QLine &d) const { return !(*this == d); }
+
+private:
+    QPoint pt1, pt2;
+};
+Q_DECLARE_TYPEINFO(QLine, Q_MOVABLE_TYPE);
+
+/*******************************************************************************
+ * class QLine inline members
+ *******************************************************************************/
+
+inline QLine::QLine() { }
+
+inline QLine::QLine(const QPoint &pt1_, const QPoint &pt2_) : pt1(pt1_), pt2(pt2_) { }
+
+inline QLine::QLine(int x1pos, int y1pos, int x2pos, int y2pos) : pt1(QPoint(x1pos, y1pos)), pt2(QPoint(x2pos, y2pos)) { }
+
+inline bool QLine::isNull() const
+{
+    return pt1 == pt2;
+}
+
+inline int QLine::x1() const
+{
+    return pt1.x();
+}
+
+inline int QLine::y1() const
+{
+    return pt1.y();
+}
+
+inline int QLine::x2() const
+{
+    return pt2.x();
+}
+
+inline int QLine::y2() const
+{
+    return pt2.y();
+}
+
+inline QPoint QLine::p1() const
+{
+    return pt1;
+}
+
+inline QPoint QLine::p2() const
+{
+    return pt2;
+}
+
+inline int QLine::dx() const
+{
+    return pt2.x() - pt1.x();
+}
+
+inline int QLine::dy() const
+{
+    return pt2.y() - pt1.y();
+}
+
+inline void QLine::translate(const QPoint &point)
+{
+    pt1 += point;
+    pt2 += point;
+}
+
+inline void QLine::translate(int adx, int ady)
+{
+    this->translate(QPoint(adx, ady));
+}
+
+inline QLine QLine::translated(const QPoint &p) const
+{
+    return QLine(pt1 + p, pt2 + p);
+}
+
+inline QLine QLine::translated(int adx, int ady) const
+{
+    return translated(QPoint(adx, ady));
+}
+
+inline void QLine::setP1(const QPoint &aP1)
+{
+    pt1 = aP1;
+}
+
+inline void QLine::setP2(const QPoint &aP2)
+{
+    pt2 = aP2;
+}
+
+inline void QLine::setPoints(const QPoint &aP1, const QPoint &aP2)
+{
+    pt1 = aP1;
+    pt2 = aP2;
+}
+
+inline void QLine::setLine(int aX1, int aY1, int aX2, int aY2)
+{
+    pt1 = QPoint(aX1, aY1);
+    pt2 = QPoint(aX2, aY2);
+}
+
+inline bool QLine::operator==(const QLine &d) const
+{
+    return pt1 == d.pt1 && pt2 == d.pt2;
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_CORE_EXPORT QDebug operator<<(QDebug d, const QLine &p);
+#endif
+
+#ifndef QT_NO_DATASTREAM
+Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QLine &);
+Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QLine &);
+#endif
+
+/*******************************************************************************
+ * class QLineF
+ *******************************************************************************/
+class Q_CORE_EXPORT QLineF {
+public:
+
+    enum IntersectType { NoIntersection, BoundedIntersection, UnboundedIntersection };
+
+    inline QLineF();
+    inline QLineF(const QPointF &pt1, const QPointF &pt2);
+    inline QLineF(qreal x1, qreal y1, qreal x2, qreal y2);
+    inline QLineF(const QLine &line) : pt1(line.p1()), pt2(line.p2()) { }
+
+    static QLineF fromPolar(qreal length, qreal angle);
+
+    bool isNull() const;
+
+    inline QPointF p1() const;
+    inline QPointF p2() const;
+
+    inline qreal x1() const;
+    inline qreal y1() const;
+
+    inline qreal x2() const;
+    inline qreal y2() const;
+
+    inline qreal dx() const;
+    inline qreal dy() const;
+
+    qreal length() const;
+    void setLength(qreal len);
+
+    qreal angle() const;
+    void setAngle(qreal angle);
+
+    qreal angleTo(const QLineF &l) const;
+
+    QLineF unitVector() const;
+    QLineF normalVector() const;
+
+    // ### Qt 5: rename intersects() or intersection() and rename IntersectType IntersectionType
+    IntersectType intersect(const QLineF &l, QPointF *intersectionPoint) const;
+
+    qreal angle(const QLineF &l) const;
+
+    QPointF pointAt(qreal t) const;
+    inline void translate(const QPointF &p);
+    inline void translate(qreal dx, qreal dy);
+
+    inline QLineF translated(const QPointF &p) const;
+    inline QLineF translated(qreal dx, qreal dy) const;
+
+    inline void setP1(const QPointF &p1);
+    inline void setP2(const QPointF &p2);
+    inline void setPoints(const QPointF &p1, const QPointF &p2);
+    inline void setLine(qreal x1, qreal y1, qreal x2, qreal y2);
+
+    inline bool operator==(const QLineF &d) const;
+    inline bool operator!=(const QLineF &d) const { return !(*this == d); }
+
+    QLine toLine() const;
+
+private:
+    QPointF pt1, pt2;
+};
+Q_DECLARE_TYPEINFO(QLineF, Q_MOVABLE_TYPE);
+
+/*******************************************************************************
+ * class QLineF inline members
+ *******************************************************************************/
+
+inline QLineF::QLineF()
+{
+}
+
+inline QLineF::QLineF(const QPointF &apt1, const QPointF &apt2)
+    : pt1(apt1), pt2(apt2)
+{
+}
+
+inline QLineF::QLineF(qreal x1pos, qreal y1pos, qreal x2pos, qreal y2pos)
+    : pt1(x1pos, y1pos), pt2(x2pos, y2pos)
+{
+}
+
+inline qreal QLineF::x1() const
+{
+    return pt1.x();
+}
+
+inline qreal QLineF::y1() const
+{
+    return pt1.y();
+}
+
+inline qreal QLineF::x2() const
+{
+    return pt2.x();
+}
+
+inline qreal QLineF::y2() const
+{
+    return pt2.y();
+}
+
+inline QPointF QLineF::p1() const
+{
+    return pt1;
+}
+
+inline QPointF QLineF::p2() const
+{
+    return pt2;
+}
+
+inline qreal QLineF::dx() const
+{
+    return pt2.x() - pt1.x();
+}
+
+inline qreal QLineF::dy() const
+{
+    return pt2.y() - pt1.y();
+}
+
+inline QLineF QLineF::normalVector() const
+{
+    return QLineF(p1(), p1() + QPointF(dy(), -dx()));
+}
+
+inline void QLineF::translate(const QPointF &point)
+{
+    pt1 += point;
+    pt2 += point;
+}
+
+inline void QLineF::translate(qreal adx, qreal ady)
+{
+    this->translate(QPointF(adx, ady));
+}
+
+inline QLineF QLineF::translated(const QPointF &p) const
+{
+    return QLineF(pt1 + p, pt2 + p);
+}
+
+inline QLineF QLineF::translated(qreal adx, qreal ady) const
+{
+    return translated(QPointF(adx, ady));
+}
+
+inline void QLineF::setLength(qreal len)
+{
+    if (isNull())
+        return;
+    QLineF v = unitVector();
+    pt2 = QPointF(pt1.x() + v.dx() * len, pt1.y() + v.dy() * len);
+}
+
+inline QPointF QLineF::pointAt(qreal t) const
+{
+    qreal vx = pt2.x() - pt1.x();
+    qreal vy = pt2.y() - pt1.y();
+    return QPointF(pt1.x() + vx * t, pt1.y() + vy * t);
+}
+
+inline QLine QLineF::toLine() const
+{
+    return QLine(pt1.toPoint(), pt2.toPoint());
+}
+
+
+inline void QLineF::setP1(const QPointF &aP1)
+{
+    pt1 = aP1;
+}
+
+inline void QLineF::setP2(const QPointF &aP2)
+{
+    pt2 = aP2;
+}
+
+inline void QLineF::setPoints(const QPointF &aP1, const QPointF &aP2)
+{
+    pt1 = aP1;
+    pt2 = aP2;
+}
+
+inline void QLineF::setLine(qreal aX1, qreal aY1, qreal aX2, qreal aY2)
+{
+    pt1 = QPointF(aX1, aY1);
+    pt2 = QPointF(aX2, aY2);
+}
+
+
+inline bool QLineF::operator==(const QLineF &d) const
+{
+    return pt1 == d.pt1 && pt2 == d.pt2;
+}
+
+
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_CORE_EXPORT QDebug operator<<(QDebug d, const QLineF &p);
+#endif
+
+#ifndef QT_NO_DATASTREAM
+Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QLineF &);
+Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QLineF &);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QLINE_H