Long live Qt 4.5!

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diff --git a/src/qt3support/widgets/q3header.cpp b/src/qt3support/widgets/q3header.cpp
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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 Qt3Support 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "q3header.h"
+#ifndef QT_NO_HEADER
+#include "qapplication.h"
+#include "qbitarray.h"
+#include "qcursor.h"
+#include "qdrawutil.h"
+#include "qevent.h"
+#include "qpainter.h"
+#include "qpixmap.h"
+#include "qstyle.h"
+#include "qstyleoption.h"
+#include "qvector.h"
+
+QT_BEGIN_NAMESPACE
+
+class Q3HeaderData
+{
+public:
+    Q3HeaderData(int n)
+    {
+        count = n;
+        sizes.resize(n);
+        positions.resize(n);
+        labels.resize(n);
+        nullStringLabels.resize(n);
+        icons.resize(n);
+        i2s.resize(n);
+        s2i.resize(n);
+        clicks.resize(n);
+        resize.resize(n);
+        int p =0;
+        for (int i = 0; i < n; i ++) {
+            sizes[i] = 88;
+            i2s[i] = i;
+            s2i[i] = i;
+            positions[i] = p;
+            p += sizes[i];
+        }
+        clicks_default = true;
+        resize_default = true;
+        clicks.fill(clicks_default);
+        resize.fill(resize_default);
+        move = true;
+        sortSection = -1;
+        sortDirection = true;
+        positionsDirty = true;
+        lastPos = 0;
+        fullSize = -2;
+        pos_dirty = false;
+        is_a_table_header = false;
+        focusIdx = 0;
+    }
+    ~Q3HeaderData()
+    {
+        for (int i = 0; i < icons.size(); ++i)
+            delete icons.at(i);
+    }
+
+
+    QVector<int>        sizes;
+    int height; // we abuse the heights as widths for vertical layout
+    bool heightDirty;
+    QVector<int>        positions; // sorted by index
+    QVector<QString>        labels;
+    QVector<QIcon *> icons;
+    QVector<int>                i2s;
+    QVector<int>                s2i;
+
+    QBitArray           clicks;
+    QBitArray           resize;
+    QBitArray           nullStringLabels;
+    uint move : 1;
+    uint clicks_default : 1; // default value for new clicks bits
+    uint resize_default : 1; // default value for new resize bits
+    uint pos_dirty : 1;
+    uint is_a_table_header : 1;
+    bool sortDirection;
+    bool positionsDirty;
+    int sortSection;
+    int count;
+    int lastPos;
+    int fullSize;
+    int focusIdx;
+    int pressDelta;
+
+    int sectionAt(int pos) {
+        // positions is sorted by index, not by section
+        if (!count)
+            return -1;
+        int l = 0;
+        int r = count - 1;
+        int i = ((l+r+1) / 2);
+        while (r - l) {
+            if (positions[i] > pos)
+                r = i -1;
+            else
+                l = i;
+            i = ((l+r+1) / 2);
+        }
+        if (positions[i] <= pos && pos <= positions[i] + sizes[i2s[i]])
+            return i2s[i];
+        return -1;
+    }
+};
+
+static QStyleOptionHeader getStyleOption(const Q3Header *header, int section)
+{
+    QStyleOptionHeader opt;
+    opt.init(header);
+    opt.section = section;
+    opt.textAlignment = Qt::AlignVCenter;
+    opt.iconAlignment = Qt::AlignVCenter;
+    if (header->iconSet(section))
+        opt.icon = *header->iconSet(section);
+    opt.text = header->label(section);
+    if (header->orientation() == Qt::Horizontal)
+        opt.state = QStyle::State_Horizontal;
+    return opt;
+}
+
+bool qt_get_null_label_bit(Q3HeaderData *data, int section)
+{
+    return data->nullStringLabels.testBit(section);
+}
+
+void qt_set_null_label_bit(Q3HeaderData *data, int section, bool b)
+{
+    data->nullStringLabels.setBit(section, b);
+}
+
+/*!
+    \class Q3Header
+    \brief The Q3Header class provides a header row or column, e.g. for
+    tables and listviews.
+
+    \compat
+
+    This class provides a header, e.g. a vertical header to display
+    row labels, or a horizontal header to display column labels. It is
+    used by Q3Table and Q3ListView for example.
+
+    A header is composed of one or more \e sections, each of which can
+    display a text label and an \link QIcon icon\endlink. A sort
+    indicator (an arrow) can also be displayed using
+    setSortIndicator().
+
+    Sections are added with addLabel() and removed with removeLabel().
+    The label and icon are set in addLabel() and can be changed
+    later with setLabel(). Use count() to retrieve the number of
+    sections in the header.
+
+    The orientation of the header is set with setOrientation(). If
+    setStretchEnabled() is true, the sections will expand to take up
+    the full width (height for vertical headers) of the header. The
+    user can resize the sections manually if setResizeEnabled() is
+    true. Call adjustHeaderSize() to have the sections resize to
+    occupy the full width (or height).
+
+    A section can be moved with moveSection(). If setMovingEnabled()
+    is true (the default)the user may drag a section from one position
+    to another. If a section is moved, the index positions at which
+    sections were added (with addLabel()), may not be the same after the
+    move. You don't have to worry about this in practice because the
+    Q3Header API works in terms of section numbers, so it doesn't matter
+    where a particular section has been moved to.
+
+    If you want the current index position of a section call
+    mapToIndex() giving it the section number. (This is the number
+    returned by the addLabel() call which created the section.) If you
+    want to get the section number of a section at a particular index
+    position call mapToSection() giving it the index number.
+
+    Here's an example to clarify mapToSection() and mapToIndex():
+
+    \table
+    \header \i41 Index positions
+    \row \i 0 \i 1 \i 2 \i 3
+    \header \i41 Original section ordering
+    \row \i Sect 0 \i Sect 1 \i Sect 2 \i Sect 3
+    \header \i41 Ordering after the user moves a section
+    \row \i Sect 0 \i Sect 2 \i Sect 3 \i Sect 1
+    \endtable
+
+    \table
+    \header \i \e k \i mapToSection(\e k) \i mapToIndex(\e k)
+    \row \i 0 \i 0 \i 0
+    \row \i 1 \i 2 \i 3
+    \row \i 2 \i 3 \i 1
+    \row \i 3 \i 1 \i 2
+    \endtable
+
+    In the example above, if we wanted to find out which section is at
+    index position 3 we'd call mapToSection(3) and get a section
+    number of 1 since section 1 was moved. Similarly, if we wanted to
+    know which index position section 2 occupied we'd call
+    mapToIndex(2) and get an index of 1.
+
+    Q3Header provides the clicked(), pressed() and released() signals.
+    If the user changes the size of a section, the sizeChange() signal
+    is emitted. If you want to have a sizeChange() signal emitted
+    continuously whilst the user is resizing (rather than just after
+    the resizing is finished), use setTracking(). If the user moves a
+    section the indexChange() signal is emitted.
+
+    \sa Q3ListView Q3Table
+*/
+
+
+
+/*!
+    Constructs a horizontal header called \a name, with parent \a
+    parent.
+*/
+
+Q3Header::Q3Header(QWidget *parent, const char *name)
+    : QWidget(parent, name, Qt::WStaticContents)
+{
+    orient = Qt::Horizontal;
+    init(0);
+}
+
+/*!
+    Constructs a horizontal header called \a name, with \a n sections
+    and parent \a parent.
+*/
+
+Q3Header::Q3Header(int n, QWidget *parent, const char *name)
+    : QWidget(parent, name, Qt::WStaticContents)
+{
+    orient = Qt::Horizontal;
+    init(n);
+}
+
+/*!
+    Destroys the header and all its sections.
+*/
+
+Q3Header::~Q3Header()
+{
+    delete d;
+    d = 0;
+}
+
+/*! \reimp
+ */
+
+void Q3Header::showEvent(QShowEvent *e)
+{
+    calculatePositions();
+    QWidget::showEvent(e);
+}
+
+/*!
+    \fn void Q3Header::sizeChange(int section, int oldSize, int newSize)
+
+    This signal is emitted when the user has changed the size of a \a
+    section from \a oldSize to \a newSize. This signal is typically
+    connected to a slot that repaints the table or list that contains
+    the header.
+*/
+
+/*!
+    \fn void Q3Header::clicked(int section)
+
+    If isClickEnabled() is true, this signal is emitted when the user
+    clicks section \a section.
+
+    \sa pressed(), released()
+*/
+
+/*!
+    \fn void Q3Header::pressed(int section)
+
+    This signal is emitted when the user presses section \a section
+    down.
+
+    \sa released()
+*/
+
+/*!
+    \fn void Q3Header::released(int section)
+
+    This signal is emitted when section \a section is released.
+
+    \sa pressed()
+*/
+
+
+/*!
+    \fn void Q3Header::indexChange(int section, int fromIndex, int toIndex)
+
+    This signal is emitted when the user moves section \a section from
+    index position \a fromIndex, to index position \a toIndex.
+*/
+
+/*!
+  \fn void Q3Header::moved(int fromIndex, int toIndex)
+
+  Use indexChange() instead.
+
+  This signal is emitted when the user has moved the section which
+  is displayed at the index \a fromIndex to the index \a toIndex.
+*/
+
+/*!
+  \fn void Q3Header::sectionClicked(int index)
+
+  Use clicked() instead.
+
+  This signal is emitted when a part of the header is clicked. \a
+  index is the index at which the section is displayed.
+
+  In a list view this signal would typically be connected to a slot
+  that sorts the specified column (or row).
+*/
+
+/*! \fn int Q3Header::cellSize(int) const
+
+  Use sectionSize() instead.
+
+  Returns the size in pixels of the section that is displayed at
+  the index \a i.
+*/
+
+/*!
+    \fn void Q3Header::sectionHandleDoubleClicked(int section)
+
+    This signal is emitted when the user doubleclicks on the edge
+    (handle) of section \a section.
+*/
+
+/*!
+
+  Use sectionPos() instead.
+
+  Returns the position in pixels of the section that is displayed at the
+  index \a i. The  position is measured from the start of the header.
+*/
+
+int Q3Header::cellPos(int i) const
+{
+    if (i == count() && i > 0)
+        return  d->positions[i-1] + d->sizes[d->i2s[i-1]]; // compatibility
+    return sectionPos(mapToSection(i));
+}
+
+
+/*!
+    \property Q3Header::count
+    \brief the number of sections in the header
+*/
+
+int Q3Header::count() const
+{
+    return d->count;
+}
+
+
+/*!
+    \property Q3Header::tracking
+    \brief whether the sizeChange() signal is emitted continuously
+
+    If tracking is on, the sizeChange() signal is emitted continuously
+    while the mouse is moved (i.e. when the header is resized),
+    otherwise it is only emitted when the mouse button is released at
+    the end of resizing.
+
+    Tracking defaults to false.
+*/
+
+
+/*
+    Initializes with \a n columns.
+*/
+void Q3Header::init(int n)
+{
+    state = Idle;
+    cachedPos = 0; // unused
+    d = new Q3HeaderData(n);
+    d->height = 0;
+    d->heightDirty = true;
+    offs = 0;
+    if(reverse())
+        offs = d->lastPos - width();
+    oldHandleIdx = oldHIdxSize = handleIdx = 0;
+
+    setMouseTracking(true);
+    trackingIsOn = false;
+    setBackgroundRole(QPalette::Button);
+    setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));
+    setAttribute(Qt::WA_PaintOutsidePaintEvent);
+}
+
+/*!
+    \property Q3Header::orientation
+    \brief the header's orientation
+
+    The orientation is either Qt::Vertical or Qt::Horizontal (the
+    default).
+
+    Call setOrientation() before adding labels if you don't provide a
+    size parameter otherwise the sizes will be incorrect.
+*/
+
+void Q3Header::setOrientation(Qt::Orientation orientation)
+{
+    if (orient == orientation)
+        return;
+    orient = orientation;
+    if (orient == Qt::Horizontal)
+        setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));
+    else
+        setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred));
+    update();
+    updateGeometry();
+}
+
+
+/*
+    Paints a rectangle starting at \a p, with length \s.
+*/
+void Q3Header::paintRect(int p, int s)
+{
+    QPainter paint(this);
+    paint.setPen(QPen(Qt::black, 1, Qt::DotLine));
+    if (reverse())
+        paint.drawRect(p - s, 3, s, height() - 5);
+    else if (orient == Qt::Horizontal)
+        paint.drawRect(p, 3, s, height() - 5);
+    else
+        paint.drawRect(3, p, height() - 5, s);
+}
+
+/*
+  Marks the division line at \a idx.
+*/
+void Q3Header::markLine(int idx)
+{
+    QPainter paint(this);
+    paint.setPen(QPen(Qt::black, 1, Qt::DotLine));
+    int MARKSIZE = style()->pixelMetric(QStyle::PM_HeaderMarkSize);
+    int p = pPos(idx);
+    int x = p - MARKSIZE/2;
+    int y = 2;
+    int x2 = p + MARKSIZE/2;
+    int y2 = height() - 3;
+    if (orient == Qt::Vertical) {
+        int t = x; x = y; y = t;
+        t = x2; x2 = y2; y2 = t;
+    }
+
+    paint.drawLine(x, y, x2, y);
+    paint.drawLine(x, y+1, x2, y+1);
+
+    paint.drawLine(x, y2, x2, y2);
+    paint.drawLine(x, y2-1, x2, y2-1);
+
+    paint.drawLine(x, y, x, y2);
+    paint.drawLine(x+1, y, x+1, y2);
+
+    paint.drawLine(x2, y, x2, y2);
+    paint.drawLine(x2-1, y, x2-1, y2);
+}
+
+/*
+  Removes the mark at the division line at \a idx.
+*/
+void Q3Header::unMarkLine(int idx)
+{
+    if (idx < 0)
+        return;
+    int MARKSIZE = style()->pixelMetric(QStyle::PM_HeaderMarkSize);
+    int p = pPos(idx);
+    int x = p - MARKSIZE/2;
+    int y = 2;
+    int x2 = p + MARKSIZE/2;
+    int y2 = height() - 3;
+    if (orient == Qt::Vertical) {
+        int t = x; x = y; y = t;
+        t = x2; x2 = y2; y2 = t;
+    }
+    repaint(x, y, x2-x+1, y2-y+1);
+}
+
+/*! \fn int Q3Header::cellAt(int) const
+
+  Use sectionAt() instead.
+
+  Returns the index at which the section is displayed, which contains
+  \a pos in widget coordinates, or -1 if \a pos is outside the header
+  sections.
+*/
+
+/*
+  Tries to find a line that is not a neighbor of  \c handleIdx.
+*/
+int Q3Header::findLine(int c)
+{
+    int i = 0;
+    if (c > d->lastPos || (reverse() && c < 0)) {
+        return d->count;
+    } else {
+        int section = sectionAt(c);
+        if (section < 0)
+            return handleIdx;
+        i = d->s2i[section];
+    }
+    int MARKSIZE = style()->pixelMetric(QStyle::PM_HeaderMarkSize);
+    if (i == handleIdx)
+        return i;
+    if (i == handleIdx - 1 &&  pPos(handleIdx) - c > MARKSIZE/2)
+        return i;
+    if (i == handleIdx + 1 && c - pPos(i) > MARKSIZE/2)
+        return i + 1;
+    if (c - pPos(i) > pSize(i) / 2)
+        return i + 1;
+    else
+        return i;
+}
+
+/*!
+    Returns the handle at position \a p, or -1 if there is no handle at \a p.
+*/
+int Q3Header::handleAt(int p)
+{
+    int section = d->sectionAt(p);
+    if (section >= 0) {
+        int GripMargin = (bool)d->resize[section] ?
+            style()->pixelMetric(QStyle::PM_HeaderGripMargin) : 0;
+        int index = d->s2i[section];
+        if ((index > 0 && p < d->positions[index] + GripMargin) ||
+            (p > d->positions[index] + d->sizes[section] - GripMargin)) {
+            if (index > 0 && p < d->positions[index]  + GripMargin)
+                section = d->i2s[--index];
+            // don't show icon if streaching is enabled it is at the end of the last section
+            if (d->resize.testBit(section) && (d->fullSize == -2 || index != count() - 1)) {
+                return section;
+            }
+        }
+    }
+
+    return -1;
+}
+
+/*!
+  Use moveSection() instead.
+
+  Moves the section that is currently displayed at index \a fromIdx
+  to index \a toIdx.
+*/
+
+void Q3Header::moveCell(int fromIdx, int toIdx)
+{
+    moveSection(mapToSection(fromIdx), toIdx);
+}
+
+
+
+/*!
+  Move and signal and repaint.
+ */
+
+void Q3Header::handleColumnMove(int fromIdx, int toIdx)
+{
+    int s = d->i2s[fromIdx];
+    if (fromIdx < toIdx)
+        toIdx++; //Convert to
+    QRect r = sRect(fromIdx);
+    r |= sRect(toIdx);
+    moveSection(s, toIdx);
+    update(r);
+    emit moved(fromIdx, toIdx);
+    emit indexChange(s, fromIdx, toIdx);
+}
+
+/*!
+  \reimp
+*/
+void Q3Header::keyPressEvent(QKeyEvent *e)
+{
+    int i = d->focusIdx;
+    if (e->key() == Qt::Key_Space) {
+        //don't do it if we're doing something with the mouse
+        if (state == Idle && d->clicks[d->i2s[d->focusIdx] ]) {
+            handleIdx = i;
+            state = Pressed;
+            repaint(sRect(handleIdx));
+            emit pressed(d->i2s[i]);
+        }
+    } else if ((orientation() == Qt::Horizontal && (e->key() == Qt::Key_Right || e->key() == Qt::Key_Left))
+               || (orientation() == Qt::Vertical && (e->key() == Qt::Key_Up || e->key() == Qt::Key_Down))) {
+        int dir = e->key() == Qt::Key_Right || e->key() == Qt::Key_Down ? 1 : -1;
+        int s = d->i2s[i];
+        if (e->state() & Qt::ControlButton  && d->resize[s]) {
+            //resize
+            int step = e->state() & Qt::ShiftButton ? dir : 10*dir;
+            int c = d->positions[i] + d->sizes[s] +  step;
+            handleColumnResize(i, c, true);
+        } else         if (e->state() & (Qt::AltButton|Qt::MetaButton) && d->move) {
+            //move section
+            int i2 = (i + count() + dir) % count();
+            d->focusIdx = i2;
+            handleColumnMove(i, i2);
+        } else {
+            //focus on different section
+            QRect r = sRect(d->focusIdx);
+            d->focusIdx = (d->focusIdx + count() + dir) % count();
+            r |= sRect(d->focusIdx);
+            update(r);
+        }
+    } else {
+        e->ignore();
+    }
+}
+
+/*!
+  \reimp
+*/
+void Q3Header::keyReleaseEvent(QKeyEvent *e)
+{
+    switch (e->key()) {
+    case Qt::Key_Space:
+        //double check that this wasn't started with the mouse
+        if (state == Pressed && handleIdx == d->focusIdx) {
+            repaint(sRect(handleIdx));
+            int section = d->i2s[d->focusIdx];
+            emit released(section);
+            emit sectionClicked(handleIdx);
+            emit clicked(section);
+            state = Idle;
+            handleIdx = -1;
+        }
+        break;
+    default:
+        e->ignore();
+    }
+}
+
+
+/*!
+  \reimp
+*/
+void Q3Header::mousePressEvent(QMouseEvent *e)
+{
+    if (e->button() != Qt::LeftButton || state != Idle)
+        return;
+    oldHIdxSize = handleIdx;
+    handleIdx = 0;
+    int c = orient == Qt::Horizontal ? e->pos().x() : e->pos().y();
+    c += offset();
+    if (reverse())
+        c = d->lastPos - c;
+
+    int section = d->sectionAt(c);
+    if (section < 0)
+        return;
+    int GripMargin = (bool)d->resize[section] ?
+        style()->pixelMetric(QStyle::PM_HeaderGripMargin) : 0;
+    int index = d->s2i[section];
+
+    if ((index > 0 && c < d->positions[index] + GripMargin) ||
+         (c > d->positions[index] + d->sizes[section] - GripMargin)) {
+        if (c < d->positions[index] + GripMargin)
+            handleIdx = index-1;
+        else
+            handleIdx = index;
+        if (d->lastPos <= (orient == Qt::Horizontal ? width() :
+                             height()) && d->fullSize != -2 && handleIdx == count() - 1) {
+            handleIdx = -1;
+            return;
+        }
+        oldHIdxSize = d->sizes[d->i2s[handleIdx]];
+        state = d->resize[d->i2s[handleIdx] ] ? Sliding : Blocked;
+    } else if (index >= 0) {
+        oldHandleIdx = handleIdx = index;
+        moveToIdx = -1;
+        state = d->clicks[d->i2s[handleIdx] ] ? Pressed : Blocked;
+        clickPos = c;
+        repaint(sRect(handleIdx));
+        if(oldHandleIdx != handleIdx)
+            repaint(sRect(oldHandleIdx));
+        emit pressed(section);
+    }
+
+    d->pressDelta = c - (d->positions[handleIdx] + d->sizes[d->i2s[handleIdx]]);
+}
+
+/*!
+  \reimp
+*/
+void Q3Header::mouseReleaseEvent(QMouseEvent *e)
+{
+    if (e->button() != Qt::LeftButton)
+        return;
+    int oldOldHandleIdx = oldHandleIdx;
+    State oldState = state;
+    state = Idle;
+    switch (oldState) {
+    case Pressed: {
+        int section = d->i2s[handleIdx];
+        emit released(section);
+        if (sRect(handleIdx).contains(e->pos())) {
+            oldHandleIdx = handleIdx;
+            emit sectionClicked(handleIdx);
+            emit clicked(section);
+        } else {
+            handleIdx = oldHandleIdx;
+        }
+        repaint(sRect(handleIdx));
+        if (oldOldHandleIdx != handleIdx)
+            repaint(sRect(oldOldHandleIdx));
+        } break;
+    case Sliding: {
+        int c = orient == Qt::Horizontal ? e->pos().x() : e->pos().y();
+        c += offset();
+        if (reverse())
+            c = d->lastPos - c;
+        handleColumnResize(handleIdx, c - d->pressDelta, true);
+    } break;
+    case Moving: {
+#ifndef QT_NO_CURSOR
+        unsetCursor();
+#endif
+        int section = d->i2s[handleIdx];
+        if (handleIdx != moveToIdx && moveToIdx != -1) {
+            moveSection(section, moveToIdx);
+            handleIdx = oldHandleIdx;
+            emit moved(handleIdx, moveToIdx);
+            emit indexChange(section, handleIdx, moveToIdx);
+            emit released(section);
+            repaint(); // a bit overkill, but removes the handle as well
+        } else {
+            if (sRect(handleIdx).contains(e->pos())) {
+                oldHandleIdx = handleIdx;
+                emit released(section);
+                emit sectionClicked(handleIdx);
+                emit clicked(section);
+            } else {
+                handleIdx = oldHandleIdx;
+            }
+            repaint(sRect(handleIdx));
+            if(oldOldHandleIdx != handleIdx)
+                repaint(sRect(oldOldHandleIdx));
+        }
+        break;
+    }
+    case Blocked:
+        //nothing
+        break;
+    default:
+        // empty, probably.  Idle, at any rate.
+        break;
+    }
+}
+
+/*!
+  \reimp
+*/
+void Q3Header::mouseMoveEvent(QMouseEvent *e)
+{
+    int c = orient == Qt::Horizontal ? e->pos().x() : e->pos().y();
+    c += offset();
+
+    int pos = c;
+    if(reverse())
+        c = d->lastPos - c;
+
+    switch(state) {
+    case Idle:
+#ifndef QT_NO_CURSOR
+        if (handleAt(c) < 0)
+            unsetCursor();
+        else if (orient == Qt::Horizontal)
+            setCursor(Qt::splitHCursor);
+        else
+            setCursor(Qt::splitVCursor);
+#endif
+        break;
+    case Blocked:
+        break;
+    case Pressed:
+        if (QABS(c - clickPos) > 4 && d->move) {
+            state = Moving;
+            moveToIdx = -1;
+#ifndef QT_NO_CURSOR
+            if (orient == Qt::Horizontal)
+                setCursor(Qt::SizeHorCursor);
+            else
+                setCursor(Qt::SizeVerCursor);
+#endif
+        }
+        break;
+    case Sliding:
+        handleColumnResize(handleIdx, c, false, false);
+        break;
+    case Moving: {
+        int newPos = findLine(pos);
+        if (newPos != moveToIdx) {
+            if (moveToIdx == handleIdx || moveToIdx == handleIdx + 1)
+                repaint(sRect(handleIdx));
+            else
+                unMarkLine(moveToIdx);
+            moveToIdx = newPos;
+            if (moveToIdx == handleIdx || moveToIdx == handleIdx + 1)
+                paintRect(pPos(handleIdx), pSize(handleIdx));
+            else
+                markLine(moveToIdx);
+        }
+        break;
+    }
+    default:
+        qWarning("Q3Header::mouseMoveEvent: (%s) unknown state", objectName().toLocal8Bit().data());
+        break;
+    }
+}
+
+/*! \reimp */
+
+void Q3Header::mouseDoubleClickEvent(QMouseEvent *e)
+{
+    int p = orient == Qt::Horizontal ? e->pos().x() : e->pos().y();
+    p += offset();
+    if(reverse())
+        p = d->lastPos - p;
+
+    int header = handleAt(p);
+    if (header >= 0)
+        emit sectionHandleDoubleClicked(header);
+}
+
+/*
+  Handles resizing of sections. This means it redraws the relevant parts
+  of the header.
+*/
+
+void Q3Header::handleColumnResize(int index, int c, bool final, bool recalcAll)
+{
+    int section = d->i2s[index];
+    int GripMargin = (bool)d->resize[section] ?
+        style()->pixelMetric(QStyle::PM_HeaderGripMargin) : 0;
+    int lim = d->positions[index] + 2*GripMargin;
+    if (c == lim)
+        return;
+    if (c < lim)
+        c = lim;
+    int oldSize = d->sizes[section];
+    int newSize = c - d->positions[index];
+    d->sizes[section] = newSize;
+
+    calculatePositions(!recalcAll, !recalcAll ? section : 0);
+
+    int pos = d->positions[index]-offset();
+    if(reverse()) // repaint the whole thing. Could be optimized (lars)
+        repaint(0, 0, width(), height());
+    else if (orient == Qt::Horizontal)
+        repaint(pos, 0, width() - pos, height());
+    else
+        repaint(0, pos, width(), height() - pos);
+
+    int os = 0, ns = 0;
+    if (tracking() && oldSize != newSize) {
+        os = oldSize;
+        ns = newSize;
+        emit sizeChange(section, oldSize, newSize);
+    } else if (!tracking() && final && oldHIdxSize != newSize) {
+        os = oldHIdxSize;
+        ns = newSize;
+        emit sizeChange(section, oldHIdxSize, newSize);
+    }
+
+    if (os != ns) {
+        if (d->fullSize == -1) {
+            d->fullSize = count() - 1;
+            adjustHeaderSize();
+            d->fullSize = -1;
+        } else if (d->fullSize >= 0) {
+            int old = d->fullSize;
+            d->fullSize = count() - 1;
+            adjustHeaderSize();
+            d->fullSize = old;
+        }
+    }
+}
+
+/*!
+    Returns the rectangle covered by the section at index \a index.
+*/
+
+QRect Q3Header::sRect(int index)
+{
+
+    int section = mapToSection(index);
+    if (count() > 0 && index >= count()) {
+        int s = d->positions[count() - 1] - offset() +
+                d->sizes[mapToSection(count() - 1)];
+        if (orient == Qt::Horizontal)
+            return QRect(s, 0, width() - s + 10, height());
+        else
+            return QRect(0, s, width(), height() - s + 10);
+    }
+    if (section < 0)
+        return rect(); // ### eeeeevil
+
+    if (reverse())
+        return QRect( d->lastPos - d->positions[index] - d->sizes[section] -offset(),
+                       0, d->sizes[section], height());
+    else if (orient == Qt::Horizontal)
+        return QRect( d->positions[index]-offset(), 0, d->sizes[section], height());
+    else
+        return QRect(0, d->positions[index]-offset(), width(), d->sizes[section]);
+}
+
+/*!
+    Returns the rectangle covered by section \a section.
+*/
+
+QRect Q3Header::sectionRect(int section) const
+{
+    int index = mapToIndex(section);
+    if (section < 0)
+        return rect(); // ### eeeeevil
+
+    if (reverse())
+        return QRect( d->lastPos - d->positions[index] - d->sizes[section] -offset(),
+                       0, d->sizes[section], height());
+    else if (orient == Qt::Horizontal)
+        return QRect( d->positions[index]-offset(), 0, d->sizes[section], height());
+    else
+        return QRect(0, d->positions[index]-offset(), width(), d->sizes[section]);
+}
+
+/*!
+    \overload
+
+    Sets the icon for section \a section to \a icon and the text to
+    \a s. The section's width is set to \a size if \a size \>= 0;
+    otherwise it is left unchanged.
+
+    If the section does not exist, nothing happens.
+*/
+
+void Q3Header::setLabel(int section, const QIcon& icon,
+                        const QString &s, int size)
+{
+    if (section < 0 || section >= count())
+        return;
+    delete d->icons[section];
+    d->icons[section] = new QIcon(icon);
+    setLabel(section, s, size);
+}
+
+/*!
+    Sets the text of section \a section to \a s. The section's width
+    is set to \a size if \a size \>= 0; otherwise it is left
+    unchanged. Any icon set that has been set for this section remains
+    unchanged.
+
+    If the section does not exist, nothing happens.
+*/
+void Q3Header::setLabel(int section, const QString &s, int size)
+{
+    if (section < 0 || section >= count())
+        return;
+    d->labels[section] = s;
+    d->nullStringLabels.setBit(section, s.isNull());
+
+    setSectionSizeAndHeight(section, size);
+
+    if (updatesEnabled()) {
+        updateGeometry();
+        calculatePositions();
+        update();
+    }
+}
+
+
+bool qt_qheader_label_return_null_strings = false;
+/*!
+    Returns the text for section \a section. If the section does not
+    exist, returns an empty string.
+*/
+QString Q3Header::label(int section) const
+{
+    if (section < 0 || section >= count())
+        return QString();
+    QString l = d->labels.value(section);
+    if (!l.isNull())
+        return l;
+    if (d->nullStringLabels.testBit(section) || qt_qheader_label_return_null_strings)
+        return l;
+    else
+        return QString::number(section + 1);
+}
+
+/*!
+    Returns the icon set for section \a section. If the section does
+    not exist, 0 is returned.
+*/
+
+QIcon *Q3Header::iconSet(int section) const
+{
+    if (section < 0 || section >= count())
+        return 0;
+    return d->icons[section];
+}
+
+
+/*!
+    \overload
+
+    Adds a new section with icon \a icon and label text \a s.
+    Returns the index position where the section was added (at the
+    right for horizontal headers, at the bottom for vertical headers).
+    The section's width is set to \a size, unless size is negative in
+    which case the size is calculated taking account of the size of
+    the text.
+*/
+int Q3Header::addLabel(const QIcon& icon, const QString &s, int size)
+{
+    int n = count() + 1;
+    d->icons.resize(n + 1);
+    d->icons.insert(n - 1, new QIcon(icon));
+    return addLabel(s, size);
+}
+
+/*!
+    Removes section \a section. If the section does not exist, nothing
+    happens.
+*/
+void Q3Header::removeLabel(int section)
+{
+    if (section < 0 || section > count() - 1)
+        return;
+
+    int index = d->s2i[section];
+    int n = --d->count;
+    int i;
+    for (i = section; i < n; ++i) {
+        d->sizes[i] = d->sizes[i+1];
+        d->labels[i] = d->labels[i+1];
+        d->labels[i+1] = QString();
+        d->nullStringLabels[i] = d->nullStringLabels[i+1];
+        d->nullStringLabels[i+1] = 0;
+        d->icons[i] = d->icons[i+1];
+        d->icons[i+1] = 0;
+    }
+
+    d->sizes.resize(n);
+    d->positions.resize(n);
+    d->labels.resize(n);
+    d->nullStringLabels.resize(n);
+    d->icons.resize(n);
+
+    for (i = section; i < n; ++i)
+        d->s2i[i] = d->s2i[i+1];
+    d->s2i.resize(n);
+
+    if (updatesEnabled()) {
+        for (i = 0; i < n; ++i)
+            if (d->s2i[i] > index)
+                --d->s2i[i];
+    }
+
+    for (i = index; i < n; ++i)
+        d->i2s[i] = d->i2s[i+1];
+    d->i2s.resize(n);
+
+    if (updatesEnabled()) {
+        for (i = 0; i < n; ++i)
+            if (d->i2s[i] > section)
+                --d->i2s[i];
+    }
+
+    if (updatesEnabled()) {
+        updateGeometry();
+        calculatePositions();
+        update();
+    }
+}
+
+QSize Q3Header::sectionSizeHint(int section, const QFontMetrics& fm) const
+{
+    int iw = 0;
+    int ih = 0;
+    if (d->icons[section] != 0) {
+        QSize isize = d->icons[section]->pixmap(style()->pixelMetric(QStyle::PM_SmallIconSize),
+                                                    QIcon::Normal).size();
+        iw = isize.width() + 2;
+        ih = isize.height();
+    }
+
+    QRect bound;
+    QString label = d->labels[section];
+    if (!label.isNull() || d->nullStringLabels.testBit(section)) {
+        int lines = label.count(QLatin1Char('\n')) + 1;
+        int w = 0;
+        if (lines > 1) {
+            bound.setHeight(fm.height() + fm.lineSpacing() * (lines - 1));
+            QStringList list = label.split(QLatin1Char('\n'));
+            for (int i=0; i < list.count(); ++i) {
+                int tmpw = fm.width(list.at(i));
+                w = QMAX(w, tmpw);
+            }
+        } else {
+            bound.setHeight(fm.height());
+            w = fm.width(label);
+        }
+        bound.setWidth(w);
+    }
+    int arrowWidth = 0;
+    if (d->sortSection == section)
+        arrowWidth = ((orient == Qt::Horizontal ? height() : width()) / 2) + 8;
+    int height = qMax(bound.height() + 2, ih) + 4;
+    int width = bound.width() + style()->pixelMetric(QStyle::PM_HeaderMargin) * 4
+        + iw + arrowWidth;
+    return QSize(width, height);
+}
+
+/*
+    Sets d->sizes[\a section] to a bounding rect based on its size
+    hint and font metrics, but constrained by \a size. It also updates
+    d->height.
+*/
+void Q3Header::setSectionSizeAndHeight(int section, int size)
+{
+    QSize sz = sectionSizeHint(section, fontMetrics());
+
+    if (size < 0) {
+        if (d->sizes[section] < 0)
+            d->sizes[section] = (orient == Qt::Horizontal) ? sz.width()
+                                                         : sz.height();
+    } else {
+        d->sizes[section] = size;
+    }
+
+    int newHeight = (orient == Qt::Horizontal) ? sz.height() : sz.width();
+    if (newHeight > d->height) {
+        d->height = newHeight;
+    } else if (newHeight < d->height) {
+        /*
+          We could be smarter, but we aren't. This makes a difference
+          only for users with many columns and '\n's in their headers
+          at the same time.
+        */
+        d->heightDirty = true;
+    }
+}
+
+/*!
+    Adds a new section with label text \a s. Returns the index
+    position where the section was added (at the right for horizontal
+    headers, at the bottom for vertical headers). The section's width
+    is set to \a size. If \a size \< 0, an appropriate size for the
+    text \a s is chosen.
+*/
+int Q3Header::addLabel(const QString &s, int size)
+{
+    int n = ++d->count;
+    if ((int)d->icons.size() < n )
+        d->icons.resize(n);
+    if ((int)d->sizes.size() < n ) {
+        d->labels.resize(n);
+        d->nullStringLabels.resize(n);
+        d->sizes.resize(n);
+        d->positions.resize(n);
+        d->i2s.resize(n);
+        d->s2i.resize(n);
+        d->clicks.resize(n);
+        d->resize.resize(n);
+    }
+    int section = d->count - 1;
+    if (!d->is_a_table_header || !s.isNull()) {
+        d->labels.insert(section, s);
+        d->nullStringLabels.setBit(section, s.isNull());
+    }
+
+    if (size >= 0 && s.isNull() && d->is_a_table_header) {
+        d->sizes[section] = size;
+    } else {
+        d->sizes[section] = -1;
+        setSectionSizeAndHeight(section, size);
+    }
+
+    int index = section;
+    d->positions[index] = d->lastPos;
+
+    d->s2i[section] = index;
+    d->i2s[index] = section;
+    d->clicks.setBit(section, d->clicks_default);
+    d->resize.setBit(section, d->resize_default);
+
+    if (updatesEnabled()) {
+        updateGeometry();
+        calculatePositions();
+        update();
+    }
+    return index;
+}
+
+void Q3Header::resizeArrays(int size)
+{
+    d->icons.resize(size);
+    d->labels.resize(size);
+    d->nullStringLabels.resize(size);
+    d->sizes.resize(size);
+    d->positions.resize(size);
+    d->i2s.resize(size);
+    d->s2i.resize(size);
+    d->clicks.resize(size);
+    d->resize.resize(size);
+}
+
+void Q3Header::setIsATableHeader(bool b)
+{
+    d->is_a_table_header = b;
+}
+
+/*! \reimp */
+QSize Q3Header::sizeHint() const
+{
+    int width;
+    int height;
+
+    ensurePolished();
+    QFontMetrics fm = fontMetrics();
+
+    if (d->heightDirty) {
+        d->height = fm.lineSpacing() + 6;
+        for (int i = 0; i < count(); i++) {
+            int h = orient == Qt::Horizontal ?
+                    sectionSizeHint(i, fm).height() : sectionSizeHint(i, fm).width();
+            d->height = qMax(d->height, h);
+        }
+        d->heightDirty = false;
+    }
+
+    if (orient == Qt::Horizontal) {
+        height = fm.lineSpacing() + 6;
+        width = 0;
+        height = qMax(height, d->height);
+        for (int i = 0; i < count(); i++)
+            width += d->sizes[i];
+    } else {
+        width = fm.width(QLatin1Char(' '));
+        height = 0;
+        width = qMax(width, d->height);
+        for (int i = 0; i < count(); i++)
+            height += d->sizes[i];
+    }
+    QStyleOptionHeader opt = getStyleOption(this, 0);
+    return style()->sizeFromContents(QStyle::CT_Q3Header, &opt, QSize(width, height),
+                                    this).expandedTo(QApplication::globalStrut());
+}
+
+/*!
+    \property Q3Header::offset
+    \brief the header's left-most (or top-most) visible pixel
+
+    Setting this property will scroll the header so that \e offset
+    becomes the left-most (or top-most for vertical headers) visible
+    pixel.
+*/
+int Q3Header::offset() const
+{
+    if (reverse())
+        return d->lastPos - width() - offs;
+    return offs;
+}
+
+void Q3Header::setOffset(int x)
+{
+    int oldOff = offset();
+    offs = x;
+    if(d->lastPos < (orient == Qt::Horizontal ? width() : height()))
+        offs = 0;
+    else if (reverse())
+        offs = d->lastPos - width() - x;
+    if (orient == Qt::Horizontal)
+        scroll(oldOff-offset(), 0);
+    else
+        scroll(0, oldOff-offset());
+}
+
+
+
+/*
+  Returns the position of actual division line \a i in widget
+  coordinates. May return a position outside the widget.
+
+  Note that the last division line is numbered count(). (There is one
+  more line than the number of sections).
+*/
+int Q3Header::pPos(int i) const
+{
+    int pos;
+    if (i == count())
+        pos = d->lastPos;
+    else
+        pos = d->positions[i];
+    if (reverse())
+        pos = d->lastPos - pos;
+    return pos - offset();
+}
+
+
+/*
+  Returns the size of the section at index position \a i.
+*/
+int Q3Header::pSize(int i) const
+{
+    return d->sizes[d->i2s[i]];
+}
+
+/*!
+  Use mapToSection() instead.
+
+  Translates from actual index \a a (index at which the section is displayed)  to
+  logical index of the section.  Returns -1 if \a a is outside the legal range.
+
+  \sa mapToActual()
+*/
+
+int Q3Header::mapToLogical(int a) const
+{
+    return mapToSection(a);
+}
+
+
+/*!
+  Use mapToIndex() instead.
+
+  Translates from logical index \a l to actual index (index at which the section \a l is displayed) .
+  Returns -1 if \a l is outside the legal range.
+
+  \sa mapToLogical()
+*/
+
+int Q3Header::mapToActual(int l) const
+{
+    return mapToIndex(l);
+}
+
+
+/*!
+  Use resizeSection() instead.
+
+  Sets the size of the section \a section to \a s pixels.
+
+  \warning does not repaint or send out signals
+*/
+
+void Q3Header::setCellSize(int section, int s)
+{
+    if (section < 0 || section >= count())
+        return;
+    d->sizes[section] = s;
+    if (updatesEnabled())
+        calculatePositions();
+    else
+        d->positionsDirty = true;
+}
+
+
+/*!
+    If \a enable is true the user may resize section \a section;
+    otherwise the section may not be manually resized.
+
+    If \a section is negative (the default) then the \a enable value
+    is set for all existing sections and will be applied to any new
+    sections that are added.
+    Example:
+    \snippet doc/src/snippets/code/src_qt3support_widgets_q3header.cpp 0
+
+    If the user resizes a section, a sizeChange() signal is emitted.
+
+    \sa setMovingEnabled() setClickEnabled() setTracking()
+*/
+
+void Q3Header::setResizeEnabled(bool enable, int section)
+{
+    if (section < 0) {
+        d->resize.fill(enable);
+        // and future ones...
+        d->resize_default = enable;
+    } else if (section < count()) {
+        d->resize[section] = enable;
+    }
+}
+
+
+/*!
+    \property Q3Header::moving
+    \brief whether the header sections can be moved
+
+    If this property is true (the default) the user can move sections.
+    If the user moves a section the indexChange() signal is emitted.
+
+    \sa setClickEnabled(), setResizeEnabled()
+*/
+
+void Q3Header::setMovingEnabled(bool enable)
+{
+    d->move = enable;
+}
+
+
+/*!
+    If \a enable is true, any clicks on section \a section will result
+    in clicked() signals being emitted; otherwise the section will
+    ignore clicks.
+
+    If \a section is -1 (the default) then the \a enable value is set
+    for all existing sections and will be applied to any new sections
+    that are added.
+
+    \sa setMovingEnabled(), setResizeEnabled()
+*/
+
+void Q3Header::setClickEnabled(bool enable, int section)
+{
+    if (section < 0) {
+        d->clicks.fill(enable);
+        // and future ones...
+        d->clicks_default = enable;
+    } else if (section < count()) {
+        d->clicks[section] = enable;
+    }
+}
+
+
+/*!
+    Paints the section at position \a index, inside rectangle \a fr
+    (which uses widget coordinates) using painter \a p.
+
+    Calls paintSectionLabel().
+*/
+
+void Q3Header::paintSection(QPainter *p, int index, const QRect& fr)
+{
+    int section = mapToSection(index);
+    QStyleOptionHeader opt = getStyleOption(this, section);
+    opt.state |= QStyle::State_Raised;
+    opt.rect = fr;
+
+    if (section < 0) {
+        style()->drawControl(QStyle::CE_Header, &opt, p, this);
+        return;
+    }
+
+    if (sectionSize(section) <= 0)
+        return;
+
+    opt.state = (orient == Qt::Horizontal ? QStyle::State_Horizontal : QStyle::State_None);
+    if (d->sortSection == section)
+        opt.sortIndicator = d->sortDirection ? QStyleOptionHeader::SortDown : QStyleOptionHeader::SortUp;
+
+    if (isEnabled())
+        opt.state |= QStyle::State_Enabled;
+    if (isClickEnabled(section) && (state == Pressed || state == Moving) && index == handleIdx)
+        opt.state |= QStyle::State_Sunken; //currently pressed
+    if (!(opt.state & QStyle::State_Sunken))
+        opt.state |= QStyle::State_Raised;
+    p->setBrushOrigin(fr.topLeft());
+    if (d->clicks[section]) {
+        style()->drawControl(QStyle::CE_Header, &opt, p, this);
+    } else {
+        p->save();
+        p->setClipRect(fr); // hack to keep styles working
+        opt.rect.setRect(fr.x() + 1, fr.y(), fr.width(), fr.height());
+        style()->drawControl(QStyle::CE_Header, &opt, p, this);
+        if (orient == Qt::Horizontal) {
+            p->setPen(palette().color(QPalette::Mid));
+            p->drawLine(fr.x() - 1, fr.y() + fr.height() - 1,
+                         fr.x() + fr.width() - 1, fr.y() + fr.height() - 1);
+            p->drawLine(fr.x() + fr.width() - 1, fr.y(),
+                         fr.x() + fr.width() - 1, fr.y() + fr.height() - 1);
+        } else {
+            p->setPen(palette().color(QPalette::Mid));
+            p->drawLine(fr.x() + width() - 1, fr.y(),
+                         fr.x() + fr.width() - 1, fr.y() + fr.height() - 1);
+            p->drawLine(fr.x(), fr.y() + fr.height() - 1,
+                         fr.x() + fr.width() - 1, fr.y() + fr.height() - 1);
+            p->setPen(palette().color(QPalette::Light));
+            if (index > 0)
+                p->drawLine(fr.x(), fr.y(), fr.x() + fr.width() - 1, fr.y());
+            if (index == count() - 1) {
+                p->drawLine(fr.x(), fr.y() + fr.height() - 1,
+                             fr.x() + fr.width() - 1, fr.y() + fr.height() - 1);
+                p->setPen(palette().color(QPalette::Mid));
+                p->drawLine(fr.x(), fr.y() + fr.height() - 2,
+                             fr.x() + fr.width() - 1, fr.y() + fr.height() - 2);
+            }
+        }
+        p->restore();
+    }
+}
+
+/*!
+    Paints the label of the section at position \a index, inside
+    rectangle \a fr (which uses widget coordinates) using painter \a
+    p.
+
+    Called by paintSection()
+*/
+void Q3Header::paintSectionLabel(QPainter *p, int index, const QRect& fr)
+{
+    int section = mapToSection(index);
+    if (section < 0)
+        return;
+
+    int dx = 0, dy = 0;
+    QStyleOptionHeader opt = getStyleOption(this, section);
+    if (d->sortSection == section)
+        opt.sortIndicator = d->sortDirection ? QStyleOptionHeader::SortDown : QStyleOptionHeader::SortUp;
+    if (index == handleIdx && (state == Pressed || state == Moving)) {
+        dx = style()->pixelMetric(QStyle::PM_ButtonShiftHorizontal, &opt, this);
+        dy = style()->pixelMetric(QStyle::PM_ButtonShiftVertical, &opt, this);
+        opt.state |= QStyle::State_Sunken;
+    }
+    if (isEnabled())
+        opt.state |= QStyle::State_Enabled;
+
+
+    opt.rect.setRect(fr.x() + style()->pixelMetric(QStyle::PM_HeaderMargin) + dx, fr.y() + 2 + dy,
+                     fr.width() - 6, fr.height() - 4);
+
+    style()->drawControl(QStyle::CE_HeaderLabel, &opt, p, this);
+
+    int arrowWidth = (orient == Qt::Horizontal ? height() : width()) / 2;
+    int arrowHeight = fr.height() - 6;
+    QSize ssh = sectionSizeHint(section, p->fontMetrics());
+    int tw = (orient == Qt::Horizontal ? ssh.width() : ssh.height());
+    int ew = 0;
+
+    if (style()->styleHint(QStyle::SH_Header_ArrowAlignment, 0, this) & Qt::AlignRight)
+        ew = fr.width() - tw - 8;
+    if (d->sortSection == section && tw <= fr.width()) {
+        if (reverse()) {
+            tw = fr.width() - tw;
+            ew = fr.width() - ew - tw;
+        }
+        opt.state = QStyle::State_None;
+        if (isEnabled())
+            opt.state |= QStyle::State_Enabled;
+        if (d->sortDirection)
+            opt.state |= QStyle::State_DownArrow;
+        else
+            opt.state |= QStyle::State_UpArrow;
+        QRect ar(fr.x() + tw - arrowWidth - 6 + ew, 4, arrowWidth, arrowHeight);
+        if (label(section).isRightToLeft())
+            ar.moveBy( 2*(fr.right() - ar.right()) + ar.width() - fr.width(), 0 );
+        opt.rect = ar;
+        style()->drawPrimitive(QStyle::PE_IndicatorHeaderArrow, &opt, p, this);
+    }
+}
+
+
+/*! \reimp */
+void Q3Header::paintEvent(QPaintEvent *e)
+{
+    QPainter p(this);
+    p.setPen(palette().buttonText().color());
+    int pos = orient == Qt::Horizontal ? e->rect().left() : e->rect().top();
+    int id = mapToIndex(sectionAt(pos + offset()));
+    if (id < 0) {
+        if (pos > 0)
+            id = d->count;
+        else if (reverse())
+            id = d->count - 1;
+        else
+            id = 0;
+    }
+    if (reverse()) {
+        for (int i = id; i >= 0; i--) {
+            QRect r = sRect(i);
+            paintSection(&p, i, r);
+            if (r.right() >= e->rect().right())
+                return;
+        }
+    } else {
+        if (count() > 0) {
+            for (int i = id; i <= count(); i++) {
+                QRect r = sRect(i);
+                /*
+                  If the last section is clickable (and thus is
+                  painted raised), draw the virtual section count()
+                  as well. Otherwise it looks ugly.
+                */
+                if (i < count() || d->clicks[mapToSection(count() - 1)])
+                    paintSection(&p, i, r);
+                if (hasFocus() && d->focusIdx == i) {
+                    QStyleOptionFocusRect opt;
+                    opt.rect.setRect(r.x()+2, r.y()+2, r.width()-4, r.height()-4);
+                    opt.palette = palette();
+                    opt.state = QStyle::State_None;
+                    style()->drawPrimitive(QStyle::PE_FrameFocusRect, &opt, &p, this);
+                }
+                if ((orient == Qt::Horizontal && r. right() >= e->rect().right())
+                    || (orient == Qt::Vertical && r. bottom() >= e->rect().bottom()))
+                    return;
+            }
+        }
+    }
+}
+
+/*!
+    \overload
+
+    Sets the sort indicator to \a ascending. Use the other overload instead.
+*/
+
+void Q3Header::setSortIndicator(int section, bool ascending)
+{
+    d->sortSection = section;
+    if (section != -1)
+        oldHandleIdx = section;
+    d->sortDirection = ascending;
+    update();
+    updateGeometry();
+}
+
+/*!
+  \fn void Q3Header::setSortIndicator(int section, Qt::SortOrder order)
+
+  Sets a sort indicator onto the specified \a section. The indicator's
+  \a order is either Ascending or Descending.
+
+  Only one section can show a sort indicator at any one time. If you
+  don't want any section to show a sort indicator pass a \a section
+  number of -1.
+
+  \sa sortIndicatorSection(), sortIndicatorOrder()
+*/
+
+/*!
+    Returns the section showing the sort indicator or -1 if there is no sort indicator.
+
+    \sa setSortIndicator(), sortIndicatorOrder()
+*/
+
+int Q3Header::sortIndicatorSection() const
+{
+    return d->sortSection;
+}
+
+/*!
+    Returns the implied sort order of the Q3Headers sort indicator.
+
+    \sa setSortIndicator(), sortIndicatorSection()
+*/
+
+Qt::SortOrder Q3Header::sortIndicatorOrder() const
+{
+    return d->sortDirection ? Qt::AscendingOrder : Qt::DescendingOrder;
+}
+
+/*!
+    Resizes section \a section to \a s pixels wide (or high).
+*/
+
+void Q3Header::resizeSection(int section, int s)
+{
+    setCellSize(section, s);
+    update();
+}
+
+/*!
+    Returns the width (or height) of the \a section in pixels.
+*/
+
+int Q3Header::sectionSize(int section) const
+{
+    if (section < 0 || section >= count())
+        return 0;
+    return d->sizes[section];
+}
+
+/*!
+    Returns the position (in pixels) at which the \a section starts.
+
+    \sa offset()
+*/
+
+int Q3Header::sectionPos(int section) const
+{
+    if (d->positionsDirty)
+        ((Q3Header *)this)->calculatePositions();
+    if (section < 0 || section >= count() )
+        return 0;
+    return d->positions[d->s2i[section]];
+}
+
+/*!
+    Returns the index of the section which contains the position \a
+    pos given in pixels from the left (or top).
+
+    \sa offset()
+*/
+
+int Q3Header::sectionAt(int pos) const
+{
+    if (reverse())
+        pos = d->lastPos - pos;
+    return d->sectionAt(pos);
+}
+
+/*!
+    Returns the number of the section that is displayed at index
+    position \a index.
+*/
+
+int Q3Header::mapToSection(int index) const
+{
+    return (index >= 0 && index < count()) ? d->i2s[index] : -1;
+}
+
+/*!
+    Returns the index position at which section \a section is
+    displayed.
+*/
+
+int Q3Header::mapToIndex(int section) const
+{
+    return (section >= 0 && section < count()) ? d->s2i[section] : -1;
+}
+
+/*!
+    Moves section \a section to index position \a toIndex.
+*/
+
+void Q3Header::moveSection(int section, int toIndex)
+{
+    int fromIndex = mapToIndex(section);
+    if (fromIndex == toIndex ||
+         fromIndex < 0 || fromIndex > count() ||
+         toIndex < 0 || toIndex > count())
+        return;
+    int i;
+    int idx = d->i2s[fromIndex];
+    if (fromIndex < toIndex) {
+        for (i = fromIndex; i < toIndex - 1; i++) {
+            int t;
+            d->i2s[i] = t = d->i2s[i+1];
+            d->s2i[t] = i;
+        }
+        d->i2s[toIndex-1] = idx;
+        d->s2i[idx] = toIndex-1;
+    } else {
+        for (i = fromIndex; i > toIndex; i--) {
+            int t;
+            d->i2s[i] = t = d->i2s[i-1];
+            d->s2i[t] = i;
+        }
+        d->i2s[toIndex] = idx;
+        d->s2i[idx] = toIndex;
+    }
+    calculatePositions();
+}
+
+/*!
+    Returns true if section \a section is clickable; otherwise returns
+    false.
+
+    If \a section is out of range (negative or larger than count() -
+    1): returns true if all sections are clickable; otherwise returns
+    false.
+
+    \sa setClickEnabled()
+*/
+
+bool Q3Header::isClickEnabled(int section) const
+{
+    if (section >= 0 && section < count()) {
+        return (bool)d->clicks[section];
+    }
+
+    for (int i = 0; i < count(); ++i) {
+        if (!d->clicks[i])
+            return false;
+    }
+    return true;
+}
+
+/*!
+    Returns true if section \a section is resizeable; otherwise
+    returns false.
+
+    If \a section is -1 then this function applies to all sections,
+    i.e. returns true if all sections are resizeable; otherwise
+    returns false.
+
+    \sa setResizeEnabled()
+*/
+
+bool Q3Header::isResizeEnabled(int section) const
+{
+    if (section >= 0 && section < count()) {
+        return (bool)d->resize[section];
+    }
+
+    for (int i = 0; i < count();++i) {
+        if (!d->resize[i])
+            return false;
+    }
+    return true;
+}
+
+bool Q3Header::isMovingEnabled() const
+{
+    return d->move;
+}
+
+/*! \internal */
+
+void Q3Header::setUpdatesEnabled(bool enable)
+{
+    if (enable)
+        calculatePositions();
+    QWidget::setUpdatesEnabled(enable);
+}
+
+
+bool Q3Header::reverse () const
+{
+#if 0
+    return (orient == Qt::Horizontal && QApplication::reverseLayout());
+#else
+    return false;
+#endif
+}
+
+/*! \reimp */
+void Q3Header::resizeEvent(QResizeEvent *e)
+{
+    if (e)
+        QWidget::resizeEvent(e);
+
+    if(d->lastPos < width()) {
+            offs = 0;
+    }
+
+    if (e) {
+        adjustHeaderSize(orientation() == Qt::Horizontal ?
+                          width() - e->oldSize().width() : height() - e->oldSize().height());
+        if ((orientation() == Qt::Horizontal && height() != e->oldSize().height())
+             || (orientation() == Qt::Vertical && width() != e->oldSize().width()))
+            update();
+    } else
+        adjustHeaderSize();
+}
+
+/*!
+    \fn void Q3Header::adjustHeaderSize()
+
+    Adjusts the size of the sections to fit the size of the header as
+    completely as possible. Only sections for which isStretchEnabled()
+    is true will be resized.
+*/
+
+void Q3Header::adjustHeaderSize(int diff)
+{
+    if (!count())
+        return;
+
+    // we skip the adjustHeaderSize when trying to resize the last column which is set to stretchable
+    if (d->fullSize == (count() -1) &&
+         (d->lastPos - d->sizes[count() -1]) > (orient == Qt::Horizontal ? width() : height()))
+        return;
+
+    if (d->fullSize >= 0) {
+        int sec = mapToSection(d->fullSize);
+        int lsec = mapToSection(count() - 1);
+        int ns = sectionSize(sec) +
+                 (orientation() == Qt::Horizontal ?
+                   width() : height()) - (sectionPos(lsec) + sectionSize(lsec));
+        int os = sectionSize(sec);
+        if (ns < 20)
+            ns = 20;
+        setCellSize(sec, ns);
+        repaint();
+        emit sizeChange(sec, os, ns);
+    } else if (d->fullSize == -1) {
+        int df = diff / count();
+        int part = orientation() == Qt::Horizontal ? width() / count() : height() / count();
+        for (int i = 0; i < count() - 1; ++i) {
+            int sec = mapToIndex(i);
+            int os = sectionSize(sec);
+            int ns = diff != -1 ? os + df : part;
+            if (ns < 20)
+                ns = 20;
+            setCellSize(sec, ns);
+            emit sizeChange(sec, os, ns);
+        }
+        int sec = mapToIndex(count() - 1);
+        int ns = (orientation() == Qt::Horizontal ? width() : height()) - sectionPos(sec);
+        int os = sectionSize(sec);
+        if (ns < 20)
+            ns = 20;
+        setCellSize(sec, ns);
+        repaint();
+        emit sizeChange(sec, os, ns);
+    }
+}
+
+/*!
+    Returns the total width of all the header columns.
+*/
+int Q3Header::headerWidth() const
+{
+    if (d->pos_dirty) {
+        ((Q3Header*)this)->calculatePositions();
+        d->pos_dirty = false;
+    }
+    return d->lastPos;
+}
+
+void Q3Header::calculatePositions(bool onlyVisible, int start)
+{
+    d->positionsDirty = false;
+    d->lastPos = count() > 0 ? d->positions[start] : 0;
+    for (int i = start; i < count(); i++) {
+        d->positions[i] = d->lastPos;
+        d->lastPos += d->sizes[d->i2s[i]];
+        if (onlyVisible && d->lastPos > offset() +
+             (orientation() == Qt::Horizontal ? width() : height()))
+            break;
+    }
+    d->pos_dirty = onlyVisible;
+}
+
+
+/*!
+    \property Q3Header::stretching
+    \brief whether the header sections always take up the full width
+    (or height) of the header
+*/
+
+
+/*!
+    If \a b is true, section \a section will be resized when the
+    header is resized, so that the sections take up the full width (or
+    height for vertical headers) of the header; otherwise section \a
+    section will be set to be unstretchable and will not resize when
+    the header is resized.
+
+    If \a section is -1, and if \a b is true, then all sections will
+    be resized equally when the header is resized so that they take up
+    the full width (or height for vertical headers) of the header;
+    otherwise all the sections will be set to be unstretchable and
+    will not resize when the header is resized.
+
+    \sa adjustHeaderSize()
+*/
+
+void Q3Header::setStretchEnabled(bool b, int section)
+{
+    if (b)
+        d->fullSize = section;
+    else
+        d->fullSize = -2;
+    adjustHeaderSize();
+}
+
+bool Q3Header::isStretchEnabled() const
+{
+    return d->fullSize == -1;
+}
+
+/*!
+    \overload
+
+    Returns true if section \a section will resize to take up the full
+    width (or height) of the header; otherwise returns false. If at
+    least one section has stretch enabled the sections will always
+    take up the full width of the header.
+
+    \sa setStretchEnabled()
+*/
+
+bool Q3Header::isStretchEnabled(int section) const
+{
+    return d->fullSize == section;
+}
+
+/*!
+  \reimp
+*/
+void Q3Header::changeEvent(QEvent *ev)
+{
+    if(ev->type() == QEvent::FontChange) {
+        QFontMetrics fm = fontMetrics();
+        d->height = (orient == Qt::Horizontal) ? fm.lineSpacing() + 6 : fm.width(QLatin1Char(' '));
+    }
+    QWidget::changeEvent(ev);
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_HEADER