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qtoolbararealayout.cpp

/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
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** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
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** addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
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** GPL_EXCEPTION.txt in this package.
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****************************************************************************/

#include <QWidgetItem>
#include <QToolBar>
#include <QStyleOption>
#include <qdebug.h>

#include "qtoolbararealayout_p.h"
#include "qmainwindowlayout_p.h"
#include "qwidgetanimator_p.h"
#include "qtoolbarlayout_p.h"
#include "qtoolbar_p.h"

/******************************************************************************
** QToolBarAreaLayoutItem
*/

#ifndef QT_NO_TOOLBAR

QSize QToolBarAreaLayoutItem::minimumSize() const
{
    if (skip())
        return QSize(0, 0);
    return qSmartMinSize(static_cast<QWidgetItem*>(widgetItem));
}

QSize QToolBarAreaLayoutItem::sizeHint() const
{
    if (skip())
        return QSize(0, 0);

    QWidget *wid = widgetItem->widget();
    QSize s = wid->sizeHint().expandedTo(wid->minimumSizeHint());
    if (wid->sizePolicy().horizontalPolicy() == QSizePolicy::Ignored)
        s.setWidth(0);
    if (wid->sizePolicy().verticalPolicy() == QSizePolicy::Ignored)
        s.setHeight(0);
    s = s.boundedTo(wid->maximumSize())
        .expandedTo(wid->minimumSize());
    return s;
}

bool QToolBarAreaLayoutItem::skip() const
{
    if (gap)
        return false;
    return widgetItem == 0 || widgetItem->isEmpty();
}

/******************************************************************************
** QToolBarAreaLayoutLine
*/

QToolBarAreaLayoutLine::QToolBarAreaLayoutLine(Qt::Orientation orientation)
    : o(orientation)
{
}

QSize QToolBarAreaLayoutLine::sizeHint() const
{
    int a = 0, b = 0;
    for (int i = 0; i < toolBarItems.count(); ++i) {
        const QToolBarAreaLayoutItem &item = toolBarItems.at(i);
        if (item.skip())
            continue;

        QSize sh = item.sizeHint();
        a += pick(o, sh);
        b = qMax(b, perp(o, sh));
    }

    QSize result;
    rpick(o, result) = a;
    rperp(o, result) = b;

    return result;
}

QSize QToolBarAreaLayoutLine::minimumSize() const
{
    int a = 0, b = 0;
    for (int i = 0; i < toolBarItems.count(); ++i) {
        const QToolBarAreaLayoutItem &item = toolBarItems[i];
        if (item.skip())
            continue;

        QSize ms = item.minimumSize();
        a += pick(o, ms);
        b = qMax(b, perp(o, ms));
    }

    QSize result;
    rpick(o, result) = a;
    rperp(o, result) = b;

    return result;
}

void QToolBarAreaLayoutLine::fitLayout()
{
    int last = -1;
    int min = pick(o, minimumSize());
    int space = pick(o, rect.size());
    int extra = qMax(0, space - min);

    for (int i = 0; i < toolBarItems.count(); ++i) {
        QToolBarAreaLayoutItem &item = toolBarItems[i];
        if (item.skip())
            continue;

        int itemMin = pick(o, item.minimumSize());
        int itemHint = pick(o, item.sizeHint());
        int itemExtra = qMin(itemHint - itemMin, extra);

        item.size = itemMin + itemExtra;
        extra -= itemExtra;

        last = i;
    }

    // calculate the positions from the sizes
    int pos = 0;
    for (int i = 0; i < toolBarItems.count(); ++i) {
        QToolBarAreaLayoutItem &item = toolBarItems[i];
        if (item.skip())
            continue;

        item.pos = pos;
        if (i == last) // stretch the last item to the end of the line
            item.size = qMax(0, pick(o, rect.size()) - item.pos);
        pos += item.size;
    }
}

bool QToolBarAreaLayoutLine::skip() const
{
    for (int i = 0; i < toolBarItems.count(); ++i) {
        if (!toolBarItems.at(i).skip())
            return false;
    }
    return true;
}

/******************************************************************************
** QToolBarAreaLayoutInfo
*/

QToolBarAreaLayoutInfo::QToolBarAreaLayoutInfo(QInternal::DockPosition pos)
    : dockPos(pos)
{
    switch (pos) {
        case QInternal::LeftDock:
        case QInternal::RightDock:
            o = Qt::Vertical;
            break;
        case QInternal::TopDock:
        case QInternal::BottomDock:
            o = Qt::Horizontal;
            break;
        default:
            o = Qt::Horizontal;
            break;
    }
}

QSize QToolBarAreaLayoutInfo::sizeHint() const
{
    int a = 0, b = 0;
    for (int i = 0; i < lines.count(); ++i) {
        const QToolBarAreaLayoutLine &l = lines.at(i);
        if (l.skip())
            continue;

        QSize hint = l.sizeHint();
        a = qMax(a, pick(o, hint));
        b += perp(o, hint);
    }

    QSize result;
    rpick(o, result) = a;
    rperp(o, result) = b;

    return result;
}

QSize QToolBarAreaLayoutInfo::minimumSize() const
{
    int a = 0, b = 0;
    for (int i = 0; i < lines.count(); ++i) {
        const QToolBarAreaLayoutLine &l = lines.at(i);
        if (l.skip())
            continue;

        QSize m = l.minimumSize();
        a = qMax(a, pick(o, m));
        b += perp(o, m);
    }

    QSize result;
    rpick(o, result) = a;
    rperp(o, result) = b;

    return result;
}

void QToolBarAreaLayoutInfo::fitLayout()
{
    int b = 0;

    bool reverse = dockPos == QInternal::RightDock || dockPos == QInternal::BottomDock;

    int i = reverse ? lines.count() - 1 : 0;
    for (;;) {
        if (reverse && i < 0 || !reverse && i == lines.count())
            break;

        QToolBarAreaLayoutLine &l = lines[i];
        if (!l.skip()) {
            if (o == Qt::Horizontal) {
                l.rect.setLeft(rect.left());
                l.rect.setRight(rect.right());
                l.rect.setTop(b + rect.top());
                b += l.sizeHint().height();
                l.rect.setBottom(b - 1 + rect.top());
            } else {
                l.rect.setTop(rect.top());
                l.rect.setBottom(rect.bottom());
                l.rect.setLeft(b + rect.left());
                b += l.sizeHint().width();
                l.rect.setRight(b - 1 + rect.left());
            }

            l.fitLayout();
        }

        i += reverse ? -1 : 1;
    }
}

void QToolBarAreaLayoutInfo::insertToolBar(QToolBar *before, QToolBar *toolBar)
{
    toolBar->setOrientation(o);

    if (before == 0) {
        if (lines.isEmpty())
            lines.append(QToolBarAreaLayoutLine(o));
        lines.last().toolBarItems.append(new QWidgetItem(toolBar));
        return;
    }

    for (int j = 0; j < lines.count(); ++j) {
        QToolBarAreaLayoutLine &line = lines[j];

        for (int k = 0; k < line.toolBarItems.count(); ++k) {
            if (line.toolBarItems.at(k).widgetItem->widget() == before) {
                line.toolBarItems.insert(k, new QWidgetItem(toolBar));
                return;
            }
        }
    }
}

void QToolBarAreaLayoutInfo::removeToolBar(QToolBar *toolBar)
{
    for (int j = 0; j < lines.count(); ++j) {
        QToolBarAreaLayoutLine &line = lines[j];

        for (int k = 0; k < line.toolBarItems.count(); ++k) {
            QToolBarAreaLayoutItem &item = line.toolBarItems[k];
            if (item.widgetItem->widget() == toolBar) {
                delete item.widgetItem;
                item.widgetItem = 0;
                line.toolBarItems.removeAt(k);

                if (line.toolBarItems.isEmpty() && j < lines.count() - 1)
                    lines.removeAt(j);

                return;
            }
        }
    }
}

void QToolBarAreaLayoutInfo::insertToolBarBreak(QToolBar *before)
{
    if (before == 0) {
        if (!lines.isEmpty() && lines.last().toolBarItems.isEmpty())
            return;
        lines.append(QToolBarAreaLayoutLine(o));
        return;
    }

    for (int j = 0; j < lines.count(); ++j) {
        QToolBarAreaLayoutLine &line = lines[j];

        for (int k = 0; k < line.toolBarItems.count(); ++k) {
            if (line.toolBarItems.at(k).widgetItem->widget() == before) {
                if (k == 0)
                    return;

                QToolBarAreaLayoutLine newLine(o);
                newLine.toolBarItems = line.toolBarItems.mid(k);
                line.toolBarItems = line.toolBarItems.mid(0, k);
                lines.insert(j + 1, newLine);

                return;
            }
        }
    }
}

void QToolBarAreaLayoutInfo::removeToolBarBreak(QToolBar *before)
{
    for (int j = 0; j < lines.count(); ++j) {
        const QToolBarAreaLayoutLine &line = lines.at(j);

        for (int k = 0; k < line.toolBarItems.count(); ++k) {
            if (line.toolBarItems.at(k).widgetItem->widget() == before) {
                if (k != 0)
                    return;
                if (j == 0)
                    return;

                lines[j - 1].toolBarItems += lines[j].toolBarItems;
                lines.removeAt(j);

                return;
            }
        }
    }
}

QList<int> QToolBarAreaLayoutInfo::gapIndex(const QPoint &pos) const
{
    int p = pick(o, pos);

    if (rect.contains(pos)) {
        for (int j = 0; j < lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = lines.at(j);
            if (line.skip())
                continue;
            if (!line.rect.contains(pos))
                continue;

            int k = 0;
            for (; k < line.toolBarItems.count(); ++k) {
                const QToolBarAreaLayoutItem &item = line.toolBarItems.at(k);
                if (item.skip())
                    continue;

                int size = qMin(item.size, pick(o, item.sizeHint()));

                if (p > item.pos + size)
                    continue;
                if (p > item.pos + size/2)
                    ++k;
                break;
            }

            QList<int> result;
            result << j << k;
            return result;
        }
    } else if (appendLineDropRect().contains(pos)) {
        QList<int> result;
        result << lines.count() << 0;
        return result;
    }

    return QList<int>();
}

bool QToolBarAreaLayoutInfo::insertGap(QList<int> path, QLayoutItem *item)
{
    int j = path.at(0);
    if (j == lines.count())
        lines.append(QToolBarAreaLayoutLine(o));

    QToolBarAreaLayoutLine &line = lines[j];
    int k = path.at(1);

    QToolBarAreaLayoutItem gap_item;
    gap_item.gap = true;
    gap_item.widgetItem = item;
    line.toolBarItems.insert(k, gap_item);

    return true;

}

void QToolBarAreaLayoutInfo::clear()
{
    lines.clear();
    rect = QRect(0, 0, -1, -1);
}

QRect QToolBarAreaLayoutInfo::itemRect(QList<int> path) const
{
    int j = path.at(0);
    int k = path.at(1);

    const QToolBarAreaLayoutLine &line = lines.at(j);
    const QToolBarAreaLayoutItem &item = line.toolBarItems.at(k);

    QRect result = line.rect;

    if (o == Qt::Horizontal) {
        result.setLeft(item.pos + line.rect.left());
        result.setWidth(item.size);
    } else {
        result.setTop(item.pos + line.rect.top());
        result.setHeight(item.size);
    }

    return result;
}

QRect QToolBarAreaLayoutInfo::appendLineDropRect() const
{
    QRect result;

    switch (dockPos) {
        case QInternal::LeftDock:
            result = QRect(rect.right(), rect.top(),
                            EmptyDockAreaSize, rect.height());
            break;
        case QInternal::RightDock:
            result = QRect(rect.left() - EmptyDockAreaSize, rect.top(),
                            EmptyDockAreaSize, rect.height());
            break;
        case QInternal::TopDock:
            result = QRect(rect.left(), rect.bottom() + 1,
                            rect.width(), EmptyDockAreaSize);
            break;
        case QInternal::BottomDock:
            result = QRect(rect.left(), rect.top() - EmptyDockAreaSize,
                            rect.width(), EmptyDockAreaSize);
            break;
        default:
            break;
    }

    return result;
}

/******************************************************************************
** QToolBarAreaLayout
*/

QToolBarAreaLayout::QToolBarAreaLayout(QMainWindow *win)
{
    visible = true;
    mainWindow = win;
    for (int i = 0; i < QInternal::DockCount; ++i) {
        QInternal::DockPosition pos = static_cast<QInternal::DockPosition>(i);
        docks[i] = QToolBarAreaLayoutInfo(pos);
    }
}

QRect QToolBarAreaLayout::fitLayout()
{
    if (!visible)
        return rect;

    QSize left_hint = docks[QInternal::LeftDock].sizeHint();
    QSize right_hint = docks[QInternal::RightDock].sizeHint();
    QSize top_hint = docks[QInternal::TopDock].sizeHint();
    QSize bottom_hint = docks[QInternal::BottomDock].sizeHint();

    QRect center = rect.adjusted(left_hint.width(), top_hint.height(),
                                    -right_hint.width(), -bottom_hint.height());

    docks[QInternal::TopDock].rect = QRect(rect.left(), rect.top(),
                                rect.width(), top_hint.height());
    docks[QInternal::LeftDock].rect = QRect(rect.left(), center.top(),
                                left_hint.width(), center.height());
    docks[QInternal::RightDock].rect = QRect(center.right() + 1, center.top(),
                                    right_hint.width(), center.height());
    docks[QInternal::BottomDock].rect = QRect(rect.left(), center.bottom() + 1,
                                    rect.width(), bottom_hint.height());

    if (!mainWindow->unifiedTitleAndToolBarOnMac()) {
        docks[QInternal::TopDock].fitLayout();
    }
    docks[QInternal::LeftDock].fitLayout();
    docks[QInternal::RightDock].fitLayout();
    docks[QInternal::BottomDock].fitLayout();

    return center;
}

QSize QToolBarAreaLayout::minimumSize(const QSize &centerMin) const
{
    if (!visible)
        return centerMin;

    QSize result = centerMin;

    QSize left_min = docks[QInternal::LeftDock].minimumSize();
    QSize right_min = docks[QInternal::RightDock].minimumSize();
    QSize top_min = docks[QInternal::TopDock].minimumSize();
    QSize bottom_min = docks[QInternal::BottomDock].minimumSize();

    result.setWidth(qMax(top_min.width(), result.width()));
    result.setWidth(qMax(bottom_min.width(), result.width()));
    result.setHeight(qMax(left_min.height(), result.height()));
    result.setHeight(qMax(right_min.height(), result.height()));

    result.rwidth() += left_min.width() + right_min.width();
    result.rheight() += top_min.height() + bottom_min.height();

    return result;
}

QSize QToolBarAreaLayout::sizeHint(const QSize &centerHint) const
{
    if (!visible)
        return centerHint;

    QSize result = centerHint;

    QSize left_hint = docks[QInternal::LeftDock].sizeHint();
    QSize right_hint = docks[QInternal::RightDock].sizeHint();
    QSize top_hint = docks[QInternal::TopDock].sizeHint();
    QSize bottom_hint = docks[QInternal::BottomDock].sizeHint();

    result.setWidth(qMax(top_hint.width(), result.width()));
    result.setWidth(qMax(bottom_hint.width(), result.width()));
    result.setHeight(qMax(left_hint.height(), result.height()));
    result.setHeight(qMax(right_hint.height(), result.height()));

    result.rwidth() += left_hint.width() + right_hint.width();
    result.rheight() += top_hint.height() + bottom_hint.height();

    return result;
}

QRect QToolBarAreaLayout::rectHint(const QRect &r) const
{
    int coef = visible ? 1 : -1;

    QRect result = r;

    QSize left_hint = docks[QInternal::LeftDock].sizeHint();
    QSize right_hint = docks[QInternal::RightDock].sizeHint();
    QSize top_hint = docks[QInternal::TopDock].sizeHint();
    QSize bottom_hint = docks[QInternal::BottomDock].sizeHint();

    result.adjust(-left_hint.width()*coef, -top_hint.height()*coef,
                    right_hint.width()*coef, bottom_hint.height()*coef);

    return result;
}

QLayoutItem *QToolBarAreaLayout::itemAt(int *x, int index) const
{
    Q_ASSERT(x != 0);

    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                if ((*x)++ == index)
                    return line.toolBarItems.at(k).widgetItem;
            }
        }
    }

    return 0;
}

QLayoutItem *QToolBarAreaLayout::takeAt(int *x, int index)
{
    Q_ASSERT(x != 0);

    for (int i = 0; i < QInternal::DockCount; ++i) {
        QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            QToolBarAreaLayoutLine &line = dock.lines[j];

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                if ((*x)++ == index) {
                    QLayoutItem *result = line.toolBarItems.takeAt(k).widgetItem;
                    if (line.toolBarItems.isEmpty())
                        dock.lines.removeAt(j);
                    return result;
                }
            }
        }
    }

    return 0;
}

void QToolBarAreaLayout::deleteAllLayoutItems()
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            QToolBarAreaLayoutLine &line = dock.lines[j];

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                QToolBarAreaLayoutItem &item = line.toolBarItems[k];
                delete item.widgetItem;
                item.widgetItem = 0;
            }
        }
    }
}

QInternal::DockPosition QToolBarAreaLayout::findToolBar(QToolBar *toolBar) const
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                if (line.toolBarItems.at(k).widgetItem->widget() == toolBar)
                    return static_cast<QInternal::DockPosition>(i);
            }
        }
    }

    return QInternal::DockCount;
}

void QToolBarAreaLayout::insertToolBar(QToolBar *before, QToolBar *toolBar)
{
    QInternal::DockPosition pos = findToolBar(before);
    if (pos == QInternal::DockCount)
        return;
    docks[pos].insertToolBar(before, toolBar);
}

void QToolBarAreaLayout::removeToolBar(QToolBar *toolBar)
{
    QInternal::DockPosition pos = findToolBar(toolBar);
    if (pos == QInternal::DockCount)
        return;
    docks[pos].removeToolBar(toolBar);
}

void QToolBarAreaLayout::addToolBar(QInternal::DockPosition pos, QToolBar *toolBar)
{
    docks[pos].insertToolBar(0, toolBar);
}

void QToolBarAreaLayout::insertToolBarBreak(QToolBar *before)
{
    QInternal::DockPosition pos = findToolBar(before);
    if (pos == QInternal::DockCount)
        return;
    docks[pos].insertToolBarBreak(before);
}

void QToolBarAreaLayout::removeToolBarBreak(QToolBar *before)
{
    QInternal::DockPosition pos = findToolBar(before);
    if (pos == QInternal::DockCount)
        return;
    docks[pos].removeToolBarBreak(before);
}

void QToolBarAreaLayout::addToolBarBreak(QInternal::DockPosition pos)
{
    docks[pos].insertToolBarBreak(0);
}

void QToolBarAreaLayout::apply(bool animate)
{
    QMainWindowLayout *layout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
    Q_ASSERT(layout != 0);

    Qt::LayoutDirection dir = mainWindow->layoutDirection();

    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);
            if (line.skip())
                continue;

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                const QToolBarAreaLayoutItem &item = line.toolBarItems.at(k);
                if (item.skip() || item.gap)
                    continue;

                QRect r;
                if (visible) {
                    if (line.o == Qt::Horizontal) {
                        r.setTop(line.rect.top());
                        r.setBottom(line.rect.bottom());
                        r.setLeft(line.rect.left() + item.pos);
                        r.setRight(line.rect.left() + item.pos + item.size - 1);
                    } else {
                        r.setLeft(line.rect.left());
                        r.setRight(line.rect.right());
                        r.setTop(line.rect.top() + item.pos);
                        r.setBottom(line.rect.top() + item.pos + item.size - 1);
                    }
                }

                QWidget *widget = item.widgetItem->widget();
                if (QToolBar *toolBar = qobject_cast<QToolBar*>(widget)) {
                    QToolBarLayout *tbl = qobject_cast<QToolBarLayout*>(toolBar->layout());
                    if (tbl->expanded) {
                        QPoint tr = r.topRight();
                        QSize size = tbl->expandedSize(r.size());
                        r.setSize(size);
                        r.moveTopRight(tr);
                        if (r.bottom() > rect.bottom())
                            r.moveBottom(rect.bottom());
                        if (r.right() > rect.right())
                            r.moveRight(rect.right());
                        if (r.left() < 0)
                            r.moveLeft(0);
                        if (r.top() < 0)
                            r.moveTop(0);
                    }
                }

                QRect geo = r;
                if (visible && dock.o == Qt::Horizontal)
                    geo = QStyle::visualRect(dir, line.rect, geo);

                layout->widgetAnimator->animate(widget, geo, animate);
            }
        }
    }
}

bool QToolBarAreaLayout::toolBarBreak(QToolBar *toolBar) const
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                if (line.toolBarItems.at(k).widgetItem->widget() == toolBar)
                    return j > 0 && k == 0;
            }
        }
    }

    return false;
}

void QToolBarAreaLayout::getStyleOptionInfo(QStyleOptionToolBar *option, QToolBar *toolBar) const
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                if (line.toolBarItems.at(k).widgetItem->widget() == toolBar) {
                    if (line.toolBarItems.count() == 1)
                        option->positionWithinLine = QStyleOptionToolBar::OnlyOne;
                    else if (k == 0)
                        option->positionWithinLine = QStyleOptionToolBar::Beginning;
                    else if (k == line.toolBarItems.count() - 1)
                        option->positionWithinLine = QStyleOptionToolBar::End;
                    else
                        option->positionWithinLine = QStyleOptionToolBar::Middle;

                    if (dock.lines.count() == 1)
                        option->positionOfLine = QStyleOptionToolBar::OnlyOne;
                    else if (j == 0)
                        option->positionOfLine = QStyleOptionToolBar::Beginning;
                    else if (j == dock.lines.count() - 1)
                        option->positionOfLine = QStyleOptionToolBar::End;
                    else
                        option->positionOfLine = QStyleOptionToolBar::Middle;

                    return;
                }
            }
        }
    }
}

QList<int> QToolBarAreaLayout::indexOf(QWidget *toolBar) const
{
    QList<int> result;

    bool found = false;

    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                const QToolBarAreaLayoutItem &item = line.toolBarItems.at(k);
                if (!item.gap && item.widgetItem->widget() == toolBar) {
                    found = true;
                    result.prepend(k);
                    break;
                }
            }

            if (found) {
                result.prepend(j);
                break;
            }
        }

        if (found) {
            result.prepend(i);
            break;
        }
    }

    return result;
}

QList<int> QToolBarAreaLayout::gapIndex(const QPoint &pos) const
{
    Qt::LayoutDirection dir = mainWindow->layoutDirection();
    for (int i = 0; i < QInternal::DockCount; ++i) {
        QPoint p = pos;
        if (docks[i].o == Qt::Horizontal)
            p = QStyle::visualPos(dir, docks[i].rect, p);
        QList<int> result = docks[i].gapIndex(p);
        if (!result.isEmpty()) {
            result.prepend(i);
            return result;
        }
    }

    return QList<int>();
}

bool QToolBarAreaLayout::insertGap(QList<int> path, QLayoutItem *item)
{
    Q_ASSERT(!path.isEmpty());
    int i = path.takeFirst();
    Q_ASSERT(i >= 0 && i < QInternal::DockCount);
    return docks[i].insertGap(path, item);
}

void QToolBarAreaLayout::remove(QList<int> path)
{
    docks[path.at(0)].lines[path.at(1)].toolBarItems.removeAt(path.at(2));
}

void QToolBarAreaLayout::clear()
{
    for (int i = 0; i < QInternal::DockCount; ++i)
        docks[i].clear();
    rect = QRect(0, 0, -1, -1);
}

QToolBarAreaLayoutItem &QToolBarAreaLayout::item(QList<int> path)
{
    Q_ASSERT(path.count() == 3);

    Q_ASSERT(path.at(0) >= 0 && path.at(0) < QInternal::DockCount);
    QToolBarAreaLayoutInfo &info = docks[path.at(0)];
    Q_ASSERT(path.at(1) >= 0 && path.at(1) < info.lines.count());
    QToolBarAreaLayoutLine &line = info.lines[path.at(1)];
    Q_ASSERT(path.at(2) >= 0 && path.at(2) < line.toolBarItems.count());
    return line.toolBarItems[path.at(2)];
}

QRect QToolBarAreaLayout::itemRect(QList<int> path) const
{
    int i = path.takeFirst();

    QRect r = docks[i].itemRect(path);
    if (docks[i].o == Qt::Horizontal)
        r = QStyle::visualRect(mainWindow->layoutDirection(),
                                docks[i].rect, r);
    return r;
}

QLayoutItem *QToolBarAreaLayout::plug(QList<int> path)
{
    QToolBarAreaLayoutItem &item = this->item(path);
    Q_ASSERT(item.gap);
    Q_ASSERT(item.widgetItem != 0);
    item.gap = false;
    return item.widgetItem;
}

QLayoutItem *QToolBarAreaLayout::unplug(QList<int> path)
{
    QToolBarAreaLayoutItem &item = this->item(path);
    Q_ASSERT(!item.gap);
    item.gap = true;
    return item.widgetItem;
}

static QRect unpackRect(uint geom0, uint geom1, bool *floating)
{
    *floating = geom0 & 1;
    if (!*floating)
        return QRect();

    geom0 >>= 1;

    int x = (int)(geom0 & 0x0000ffff) - 0x7FFF;
    int y = (int)(geom1 & 0x0000ffff) - 0x7FFF;

    geom0 >>= 16;
    geom1 >>= 16;

    int w = geom0 & 0x0000ffff;
    int h = geom1 & 0x0000ffff;

    return QRect(x, y, w, h);
}

static void packRect(uint *geom0, uint *geom1, const QRect &rect, bool floating)
{
    *geom0 = 0;
    *geom1 = 0;

    if (!floating)
        return;

    // The 0x7FFF is half of 0xFFFF. We add it so we can handle negative coordinates on
    // dual monitors. It's subtracted when unpacking.

    *geom0 |= qMax(0, rect.width()) & 0x0000ffff;
    *geom1 |= qMax(0, rect.height()) & 0x0000ffff;

    *geom0 <<= 16;
    *geom1 <<= 16;

    *geom0 |= qMax(0, rect.x() + 0x7FFF) & 0x0000ffff;
    *geom1 |= qMax(0, rect.y() + 0x7FFF) & 0x0000ffff;

    // yeah, we chop one bit off the width, but it still has a range up to 32512

    *geom0 <<= 1;
    *geom0 |= 1;
}

void QToolBarAreaLayout::saveState(QDataStream &stream) const
{
    // save toolbar state
    stream << (uchar) ToolBarStateMarkerEx;

    int lineCount = 0;
    for (int i = 0; i < QInternal::DockCount; ++i)
        lineCount += docks[i].lines.count();

    stream << lineCount;

    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QToolBarAreaLayoutInfo &dock = docks[i];

        for (int j = 0; j < dock.lines.count(); ++j) {
            const QToolBarAreaLayoutLine &line = dock.lines.at(j);

            stream << i << line.toolBarItems.count();

            for (int k = 0; k < line.toolBarItems.count(); ++k) {
                const QToolBarAreaLayoutItem &item = line.toolBarItems.at(k);
                QWidget *widget = const_cast<QLayoutItem*>(item.widgetItem)->widget();
                QString objectName = widget->objectName();
                if (objectName.isEmpty()) {
                    qWarning("QMainWindow::saveState(): 'objectName' not set for QToolBar %p '%s'",
                                widget, widget->windowTitle().toLocal8Bit().constData());
                }
                stream << objectName;
                stream << (uchar) !widget->isHidden();
                stream << item.pos;
                stream << item.size;

                uint geom0, geom1;
                packRect(&geom0, &geom1, widget->geometry(), widget->isWindow());
                stream << geom0 << geom1;
            }
        }
    }
}

bool QToolBarAreaLayout::restoreState(QDataStream &stream, const QList<QToolBar*> &_toolBars, uchar tmarker)
{
    QList<QToolBar*> toolBars = _toolBars;
    int lines;
    stream >> lines;

    for (int j = 0; j < lines; ++j) {
        int pos;
        stream >> pos;
        if (pos < 0 || pos >= QInternal::DockCount)
            return false;
        int cnt;
        stream >> cnt;

        QToolBarAreaLayoutInfo &dock = docks[pos];
        QToolBarAreaLayoutLine line(dock.o);

        for (int k = 0; k < cnt; ++k) {
            QToolBarAreaLayoutItem item;

            QString objectName;
            stream >> objectName;
            uchar shown;
            stream >> shown;
            stream >> item.pos;
            stream >> item.size;

            /*
               4.3.0 added floating toolbars, but failed to add the ability to restore them.
               We need to store there geometry (four ints). We cannot change the format in a
               patch release (4.3.1) by adding ToolBarStateMarkerEx2 to signal extra data. So
               for now we'll pack it in the two legacy ints we no longer used in Qt4.3.0.
               In 4.4, we should add ToolBarStateMarkerEx2 and fix this properly.
            */

            QRect rect;
            bool floating = false;
            uint geom0, geom1;
            stream >> geom0;
            if (tmarker == ToolBarStateMarkerEx) {
                stream >> geom1;
                rect = unpackRect(geom0, geom1, &floating);
            }

            QToolBar *toolBar = 0;
            for (int x = 0; x < toolBars.count(); ++x) {
                if (toolBars.at(x)->objectName() == objectName) {
                    toolBar = toolBars.takeAt(x);
                    break;
                }
            }
            if (toolBar == 0) {
                continue;
            }

            item.widgetItem = new QWidgetItem(toolBar);
            toolBar->setOrientation(floating ? Qt::Horizontal : dock.o);
            toolBar->setVisible(shown);
            toolBar->d_func()->setWindowState(floating, true, rect);

            line.toolBarItems.append(item);
        }

        dock.lines.append(line);
    }


    return stream.status() == QDataStream::Ok;
}

bool QToolBarAreaLayout::isEmpty() const
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        if (!docks[i].lines.isEmpty())
            return false;
    }
    return true;
}

#endif // QT_NO_TOOLBAR

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