Long live Qt!

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diff --git a/src/gui/painting/qpainterpath.h b/src/gui/painting/qpainterpath.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 QPAINTERPATH_H
+#define QPAINTERPATH_H
+
+#include <QtGui/qmatrix.h>
+#include <QtCore/qglobal.h>
+#include <QtCore/qrect.h>
+#include <QtCore/qline.h>
+#include <QtCore/qvector.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QFont;
+class QPainterPathPrivate;
+class QPainterPathData;
+class QPainterPathStrokerPrivate;
+class QPolygonF;
+class QRegion;
+class QVectorPath;
+
+class Q_GUI_EXPORT QPainterPath
+{
+public:
+    enum ElementType {
+        MoveToElement,
+        LineToElement,
+        CurveToElement,
+        CurveToDataElement
+    };
+
+    class Element {
+    public:
+        qreal x;
+        qreal y;
+        ElementType type;
+
+        bool isMoveTo() const { return type == MoveToElement; }
+        bool isLineTo() const { return type == LineToElement; }
+        bool isCurveTo() const { return type == CurveToElement; }
+
+        operator QPointF () const { return QPointF(x, y); }
+
+        bool operator==(const Element &e) const { return qFuzzyCompare(x, e.x)
+            && qFuzzyCompare(y, e.y) && type == e.type; }
+        inline bool operator!=(const Element &e) const { return !operator==(e); }
+    };
+
+    QPainterPath();
+    explicit QPainterPath(const QPointF &startPoint);
+    QPainterPath(const QPainterPath &other);
+    QPainterPath &operator=(const QPainterPath &other);
+    ~QPainterPath();
+
+    void closeSubpath();
+
+    void moveTo(const QPointF &p);
+    inline void moveTo(qreal x, qreal y);
+
+    void lineTo(const QPointF &p);
+    inline void lineTo(qreal x, qreal y);
+
+    void arcMoveTo(const QRectF &rect, qreal angle);
+    inline void arcMoveTo(qreal x, qreal y, qreal w, qreal h, qreal angle);
+
+    void arcTo(const QRectF &rect, qreal startAngle, qreal arcLength);
+    inline void arcTo(qreal x, qreal y, qreal w, qreal h, qreal startAngle, qreal arcLength);
+
+    void cubicTo(const QPointF &ctrlPt1, const QPointF &ctrlPt2, const QPointF &endPt);
+    inline void cubicTo(qreal ctrlPt1x, qreal ctrlPt1y, qreal ctrlPt2x, qreal ctrlPt2y,
+                        qreal endPtx, qreal endPty);
+    void quadTo(const QPointF &ctrlPt, const QPointF &endPt);
+    inline void quadTo(qreal ctrlPtx, qreal ctrlPty, qreal endPtx, qreal endPty);
+
+    QPointF currentPosition() const;
+
+    void addRect(const QRectF &rect);
+    inline void addRect(qreal x, qreal y, qreal w, qreal h);
+    void addEllipse(const QRectF &rect);
+    inline void addEllipse(qreal x, qreal y, qreal w, qreal h);
+    inline void addEllipse(const QPointF &center, qreal rx, qreal ry);
+    void addPolygon(const QPolygonF &polygon);
+    void addText(const QPointF &point, const QFont &f, const QString &text);
+    inline void addText(qreal x, qreal y, const QFont &f, const QString &text);
+    void addPath(const QPainterPath &path);
+    void addRegion(const QRegion &region);
+
+    void addRoundedRect(const QRectF &rect, qreal xRadius, qreal yRadius,
+                        Qt::SizeMode mode = Qt::AbsoluteSize);
+    inline void addRoundedRect(qreal x, qreal y, qreal w, qreal h,
+                               qreal xRadius, qreal yRadius,
+                               Qt::SizeMode mode = Qt::AbsoluteSize);
+
+    void addRoundRect(const QRectF &rect, int xRnd, int yRnd);
+    inline void addRoundRect(qreal x, qreal y, qreal w, qreal h,
+                             int xRnd, int yRnd);
+    inline void addRoundRect(const QRectF &rect, int roundness);
+    inline void addRoundRect(qreal x, qreal y, qreal w, qreal h,
+                             int roundness);
+
+    void connectPath(const QPainterPath &path);
+
+    bool contains(const QPointF &pt) const;
+    bool contains(const QRectF &rect) const;
+    bool intersects(const QRectF &rect) const;
+
+    void translate(qreal dx, qreal dy);
+    inline void translate(const QPointF &offset);
+
+    QPainterPath translated(qreal dx, qreal dy) const;
+    inline QPainterPath translated(const QPointF &offset) const;
+
+    QRectF boundingRect() const;
+    QRectF controlPointRect() const;
+
+    Qt::FillRule fillRule() const;
+    void setFillRule(Qt::FillRule fillRule);
+
+    inline bool isEmpty() const;
+
+    QPainterPath toReversed() const;
+    QList<QPolygonF> toSubpathPolygons(const QMatrix &matrix = QMatrix()) const;
+    QList<QPolygonF> toFillPolygons(const QMatrix &matrix = QMatrix()) const;
+    QPolygonF toFillPolygon(const QMatrix &matrix = QMatrix()) const;
+    QList<QPolygonF> toSubpathPolygons(const QTransform &matrix) const;
+    QList<QPolygonF> toFillPolygons(const QTransform &matrix) const;
+    QPolygonF toFillPolygon(const QTransform &matrix) const;
+
+    inline int elementCount() const;
+    inline const QPainterPath::Element &elementAt(int i) const;
+    inline void setElementPositionAt(int i, qreal x, qreal y);
+
+    qreal   length() const;
+    qreal   percentAtLength(qreal t) const;
+    QPointF pointAtPercent(qreal t) const;
+    qreal   angleAtPercent(qreal t) const;
+    qreal   slopeAtPercent(qreal t) const;
+
+    bool intersects(const QPainterPath &p) const;
+    bool contains(const QPainterPath &p) const;
+    QPainterPath united(const QPainterPath &r) const;
+    QPainterPath intersected(const QPainterPath &r) const;
+    QPainterPath subtracted(const QPainterPath &r) const;
+    QPainterPath subtractedInverted(const QPainterPath &r) const;
+
+    QPainterPath simplified() const;
+
+    bool operator==(const QPainterPath &other) const;
+    bool operator!=(const QPainterPath &other) const;
+
+    QPainterPath operator&(const QPainterPath &other) const;
+    QPainterPath operator|(const QPainterPath &other) const;
+    QPainterPath operator+(const QPainterPath &other) const;
+    QPainterPath operator-(const QPainterPath &other) const;
+    QPainterPath &operator&=(const QPainterPath &other);
+    QPainterPath &operator|=(const QPainterPath &other);
+    QPainterPath &operator+=(const QPainterPath &other);
+    QPainterPath &operator-=(const QPainterPath &other);
+
+private:
+    QPainterPathPrivate *d_ptr;
+
+    inline void ensureData() { if (!d_ptr) ensureData_helper(); }
+    void ensureData_helper();
+    inline void detach();
+    void detach_helper();
+    void setDirty(bool);
+    void computeBoundingRect() const;
+    void computeControlPointRect() const;
+
+    QPainterPathData *d_func() const { return reinterpret_cast<QPainterPathData *>(d_ptr); }
+
+    friend class QPainterPathData;
+    friend class QPainterPathStroker;
+    friend class QPainterPathStrokerPrivate;
+    friend class QMatrix;
+    friend class QTransform;
+    friend Q_GUI_EXPORT const QVectorPath &qtVectorPathForPath(const QPainterPath &);
+
+#ifndef QT_NO_DATASTREAM
+    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPainterPath &);
+    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPainterPath &);
+#endif
+};
+
+class QPainterPathPrivate
+{
+public:
+    friend class QPainterPath;
+    friend class QPainterPathData;
+    friend class QPainterPathStroker;
+    friend class QPainterPathStrokerPrivate;
+    friend class QMatrix;
+    friend class QTransform;
+#ifndef QT_NO_DATASTREAM
+    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPainterPath &);
+    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPainterPath &);
+#endif
+private:
+    QAtomicInt ref;
+    QVector<QPainterPath::Element> elements;
+};
+
+Q_DECLARE_TYPEINFO(QPainterPath::Element, Q_PRIMITIVE_TYPE);
+
+#ifndef QT_NO_DATASTREAM
+Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPainterPath &);
+Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPainterPath &);
+#endif
+
+class Q_GUI_EXPORT QPainterPathStroker
+{
+    Q_DECLARE_PRIVATE(QPainterPathStroker)
+public:
+    QPainterPathStroker();
+    ~QPainterPathStroker();
+
+    void setWidth(qreal width);
+    qreal width() const;
+
+    void setCapStyle(Qt::PenCapStyle style);
+    Qt::PenCapStyle capStyle() const;
+
+    void setJoinStyle(Qt::PenJoinStyle style);
+    Qt::PenJoinStyle joinStyle() const;
+
+    void setMiterLimit(qreal length);
+    qreal miterLimit() const;
+
+    void setCurveThreshold(qreal threshold);
+    qreal curveThreshold() const;
+
+    void setDashPattern(Qt::PenStyle);
+    void setDashPattern(const QVector<qreal> &dashPattern);
+    QVector<qreal> dashPattern() const;
+
+    void setDashOffset(qreal offset);
+    qreal dashOffset() const;
+
+    QPainterPath createStroke(const QPainterPath &path) const;
+
+private:
+    QPainterPathStrokerPrivate *d_ptr;
+};
+
+inline void QPainterPath::moveTo(qreal x, qreal y)
+{
+    moveTo(QPointF(x, y));
+}
+
+inline void QPainterPath::lineTo(qreal x, qreal y)
+{
+    lineTo(QPointF(x, y));
+}
+
+inline void QPainterPath::arcTo(qreal x, qreal y, qreal w, qreal h, qreal startAngle, qreal arcLenght)
+{
+    arcTo(QRectF(x, y, w, h), startAngle, arcLenght);
+}
+
+inline void QPainterPath::arcMoveTo(qreal x, qreal y, qreal w, qreal h, qreal angle)
+{
+    arcMoveTo(QRectF(x, y, w, h), angle);
+}
+
+inline void QPainterPath::cubicTo(qreal ctrlPt1x, qreal ctrlPt1y, qreal ctrlPt2x, qreal ctrlPt2y,
+                                   qreal endPtx, qreal endPty)
+{
+    cubicTo(QPointF(ctrlPt1x, ctrlPt1y), QPointF(ctrlPt2x, ctrlPt2y),
+            QPointF(endPtx, endPty));
+}
+
+inline void QPainterPath::quadTo(qreal ctrlPtx, qreal ctrlPty, qreal endPtx, qreal endPty)
+{
+    quadTo(QPointF(ctrlPtx, ctrlPty), QPointF(endPtx, endPty));
+}
+
+inline void QPainterPath::addEllipse(qreal x, qreal y, qreal w, qreal h)
+{
+    addEllipse(QRectF(x, y, w, h));
+}
+
+inline void QPainterPath::addEllipse(const QPointF &center, qreal rx, qreal ry)
+{
+    addEllipse(QRectF(center.x() - rx, center.y() - ry, 2 * rx, 2 * ry));
+}
+
+inline void QPainterPath::addRect(qreal x, qreal y, qreal w, qreal h)
+{
+    addRect(QRectF(x, y, w, h));
+}
+
+inline void QPainterPath::addRoundedRect(qreal x, qreal y, qreal w, qreal h,
+                                         qreal xRadius, qreal yRadius,
+                                         Qt::SizeMode mode)
+{
+    addRoundedRect(QRectF(x, y, w, h), xRadius, yRadius, mode);
+}
+
+inline void QPainterPath::addRoundRect(qreal x, qreal y, qreal w, qreal h,
+                                       int xRnd, int yRnd)
+{
+    addRoundRect(QRectF(x, y, w, h), xRnd, yRnd);
+}
+
+inline void QPainterPath::addRoundRect(const QRectF &rect,
+                                       int roundness)
+{
+    int xRnd = roundness;
+    int yRnd = roundness;
+    if (rect.width() > rect.height())
+        xRnd = int(roundness * rect.height()/rect.width());
+    else
+        yRnd = int(roundness * rect.width()/rect.height());
+    addRoundRect(rect, xRnd, yRnd);
+}
+
+inline void QPainterPath::addRoundRect(qreal x, qreal y, qreal w, qreal h,
+                                       int roundness)
+{
+    addRoundRect(QRectF(x, y, w, h), roundness);
+}
+
+inline void QPainterPath::addText(qreal x, qreal y, const QFont &f, const QString &text)
+{
+    addText(QPointF(x, y), f, text);
+}
+
+inline void QPainterPath::translate(const QPointF &offset)
+{ translate(offset.x(), offset.y()); }
+
+inline QPainterPath QPainterPath::translated(const QPointF &offset) const
+{ return translated(offset.x(), offset.y()); }
+
+inline bool QPainterPath::isEmpty() const
+{
+    return !d_ptr || (d_ptr->elements.size() == 1 && d_ptr->elements.first().type == MoveToElement);
+}
+
+inline int QPainterPath::elementCount() const
+{
+    return d_ptr ? d_ptr->elements.size() : 0;
+}
+
+inline const QPainterPath::Element &QPainterPath::elementAt(int i) const
+{
+    Q_ASSERT(d_ptr);
+    Q_ASSERT(i >= 0 && i < elementCount());
+    return d_ptr->elements.at(i);
+}
+
+inline void QPainterPath::setElementPositionAt(int i, qreal x, qreal y)
+{
+    Q_ASSERT(d_ptr);
+    Q_ASSERT(i >= 0 && i < elementCount());
+    detach();
+    QPainterPath::Element &e = d_ptr->elements[i];
+    e.x = x;
+    e.y = y;
+}
+
+
+inline void QPainterPath::detach()
+{
+    if (d_ptr->ref != 1)
+        detach_helper();
+    setDirty(true);
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug, const QPainterPath &);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QPAINTERPATH_H