qdockarealayout.cpp

奇趣公司比较新的qt/emd版本

    int tab_idx = 0;
    bool changed = false;
    for (int i = 0; i < item_list.count(); ++i) {
        const QDockAreaLayoutItem &item = item_list.at(i);
        if (item.skip())
            continue;
        if (item.gap) {
            gap = true;
            continue;
        }
        if (item.widgetItem == 0)
            continue;

        QDockWidget *dw = qobject_cast<QDockWidget*>(item.widgetItem->widget());
        QString title = dw->d_func()->fixedWindowTitle;
        quintptr id = tabId(item);
        if (tab_idx == tabBar->count()) {
            tabBar->insertTab(tab_idx, title);
#ifndef QT_NO_TOOLTIP
            tabBar->setTabToolTip(tab_idx, title);
#endif
            tabBar->setTabData(tab_idx, id);
            changed = true;
        } else if (qvariant_cast<quintptr>(tabBar->tabData(tab_idx)) != id) {
            if (tab_idx + 1 < tabBar->count()
                    && qvariant_cast<quintptr>(tabBar->tabText(tab_idx + 1)) == id)
                tabBar->removeTab(tab_idx);
            else {
                tabBar->insertTab(tab_idx, title);
#ifndef QT_NO_TOOLTIP
                tabBar->setTabToolTip(tab_idx, title);
#endif
                tabBar->setTabData(tab_idx, id);
            }
            changed = true;
        }

        if (title != tabBar->tabText(tab_idx)) {
            tabBar->setTabText(tab_idx, title);
#ifndef QT_NO_TOOLTIP
            tabBar->setTabToolTip(tab_idx, title);
#endif
            changed = true;
        }

        ++tab_idx;
    }

    while (tab_idx < tabBar->count()) {
        tabBar->removeTab(tab_idx);
        changed = true;
    }

    tabBar->blockSignals(blocked);

    that->tabBarVisible = gap || tabBar->count() > 1;

    if (changed || !tabBarMin.isValid() | !tabBarHint.isValid()) {
        that->tabBarMin = tabBar->minimumSizeHint();
        that->tabBarHint = tabBar->sizeHint();
    }
}

void QDockAreaLayoutInfo::setTabBarShape(int shape)
{
    if (shape == tabBarShape)
        return;
    tabBarShape = shape;
    if (tabBar != 0) {
        tabBar->setShape(static_cast<QTabBar::Shape>(shape));
        tabBarMin = QSize();
        tabBarHint = QSize();
    }

    for (int i = 0; i < item_list.count(); ++i) {
        QDockAreaLayoutItem &item = item_list[i];
        if (item.subinfo != 0)
            item.subinfo->setTabBarShape(shape);
    }
}

QSize QDockAreaLayoutInfo::tabBarMinimumSize() const
{
    if (!tabbed)
        return QSize(0, 0);

    updateTabBar();

    return tabBarMin;
}

QSize QDockAreaLayoutInfo::tabBarSizeHint() const
{
    if (!tabbed)
        return QSize(0, 0);

    updateTabBar();

    return tabBarHint;
}

QSet<QTabBar*> QDockAreaLayoutInfo::usedTabBars() const
{
    QSet<QTabBar*> result;

    if (tabbed) {
        updateTabBar();
        result.insert(tabBar);
    }

    for (int i = 0; i < item_list.count(); ++i) {
        const QDockAreaLayoutItem &item = item_list.at(i);
        if (item.subinfo != 0)
            result += item.subinfo->usedTabBars();
    }

    return result;
}

QRect QDockAreaLayoutInfo::tabContentRect() const
{
    if (!tabbed)
        return QRect();

    QRect result = rect;
    QSize tbh = tabBarSizeHint();

    if (tabBarVisible) {
        switch (tabBarShape) {
            case QTabBar::RoundedNorth:
                result.adjust(0, tbh.height(), 0, 0);
                break;
            case QTabBar::RoundedSouth:
                result.adjust(0, 0, 0, -tbh.height());
                break;
            case QTabBar::RoundedEast:
                result.adjust(0, 0, -tbh.width(), 0);
                break;
            case QTabBar::RoundedWest:
                result.adjust(tbh.width(), 0, 0, 0);
                break;
            default:
                break;
        }
    }

    return result;
}
#endif // QT_NO_TABBAR

/******************************************************************************
** QDockAreaLayout
*/

QDockAreaLayout::QDockAreaLayout(QMainWindow *win)
{
    mainWindow = win;
    sep = win->style()->pixelMetric(QStyle::PM_DockWidgetSeparatorExtent);
#ifndef QT_NO_TABBAR
    const int tabShape = QTabBar::RoundedSouth;
#else
    const int tabShape = 0;
#endif
    docks[QInternal::LeftDock]
        = QDockAreaLayoutInfo(sep, QInternal::LeftDock, Qt::Vertical, tabShape, win);
    docks[QInternal::RightDock]
        = QDockAreaLayoutInfo(sep, QInternal::RightDock, Qt::Vertical, tabShape, win);
    docks[QInternal::TopDock]
        = QDockAreaLayoutInfo(sep, QInternal::TopDock, Qt::Horizontal, tabShape, win);
    docks[QInternal::BottomDock]
        = QDockAreaLayoutInfo(sep, QInternal::BottomDock, Qt::Horizontal, tabShape, win);
    centralWidgetItem = 0;
    centralWidgetRect = QRect(0, 0, -1, -1);

    corners[Qt::TopLeftCorner] = Qt::TopDockWidgetArea;
    corners[Qt::TopRightCorner] = Qt::TopDockWidgetArea;
    corners[Qt::BottomLeftCorner] = Qt::BottomDockWidgetArea;
    corners[Qt::BottomRightCorner] = Qt::BottomDockWidgetArea;
}

bool QDockAreaLayout::isValid() const
{
    return rect.isValid();
}

void QDockAreaLayout::saveState(QDataStream &stream) const
{
    stream << (uchar) DockWidgetStateMarker;
    int cnt = 0;
    for (int i = 0; i < QInternal::DockCount; ++i) {
        if (!docks[i].item_list.isEmpty())
            ++cnt;
    }
    stream << cnt;
    for (int i = 0; i < QInternal::DockCount; ++i) {
        if (docks[i].item_list.isEmpty())
            continue;
        stream << i << docks[i].rect.size();
        docks[i].saveState(stream);
    }

    stream << centralWidgetRect.size();

    for (int i = 0; i < 4; ++i)
        stream << static_cast<int>(corners[i]);
}

bool QDockAreaLayout::restoreState(QDataStream &stream, const QList<QDockWidget*> &_dockwidgets)
{
    QList<QDockWidget*> dockwidgets = _dockwidgets;

    int cnt;
    stream >> cnt;
    for (int i = 0; i < cnt; ++i) {
        int pos;
        stream >> pos;
        QSize size;
        stream >> size;
        docks[pos].rect = QRect(QPoint(0, 0), size);
        if (!docks[pos].restoreState(stream, dockwidgets)) {
            stream.setStatus(QDataStream::ReadCorruptData);
            return false;
        }
    }

    QSize size;
    stream >> size;
    centralWidgetRect = QRect(QPoint(0, 0), size);

    bool ok = stream.status() == QDataStream::Ok;

    if (ok) {
        int cornerData[4];
        for (int i = 0; i < 4; ++i)
            stream >> cornerData[i];
        if (stream.status() == QDataStream::Ok) {
            for (int i = 0; i < 4; ++i)
                corners[i] = static_cast<Qt::DockWidgetArea>(cornerData[i]);
        }
    }

    return ok;
}

QList<int> QDockAreaLayout::indexOf(QWidget *dockWidget) const
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        QList<int> result = docks[i].indexOf(dockWidget);
        if (!result.isEmpty()) {
            result.prepend(i);
            return result;
        }
    }
    return QList<int>();
}

QList<int> QDockAreaLayout::gapIndex(const QPoint &pos) const
{
    QMainWindow::DockOptions opts = mainWindow->dockOptions();
    bool nestingEnabled = opts & QMainWindow::AllowNestedDocks;
    QDockAreaLayoutInfo::TabMode tabMode = QDockAreaLayoutInfo::NoTabs;
#ifndef QT_NO_TABBAR
    if (opts & QMainWindow::AllowTabbedDocks
        || opts & QMainWindow::VerticalTabs)
        tabMode = QDockAreaLayoutInfo::AllowTabs;
    if (opts & QMainWindow::ForceTabbedDocks)
        tabMode = QDockAreaLayoutInfo::ForceTabs;

    if (tabMode == QDockAreaLayoutInfo::ForceTabs)
        nestingEnabled = false;
#endif


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

        if (!info.isEmpty() && info.rect.contains(pos)) {
            QList<int> result
                = docks[i].gapIndex(pos, nestingEnabled, tabMode);
            if (!result.isEmpty())
                result.prepend(i);
            return result;
        }
    }

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

        if (info.isEmpty()) {
            QRect r;
            switch (i) {
                case QInternal::LeftDock:
                    r = QRect(rect.left(), rect.top(), EmptyDropAreaSize, rect.height());
                    break;
                case QInternal::RightDock:
                    r = QRect(rect.right() - EmptyDropAreaSize, rect.top(),
                                EmptyDropAreaSize, rect.height());
                    break;
                case QInternal::TopDock:
                    r = QRect(rect.left(), rect.top(), rect.width(), EmptyDropAreaSize);
                    break;
                case QInternal::BottomDock:
                    r = QRect(rect.left(), rect.bottom() - EmptyDropAreaSize,
                                rect.width(), EmptyDropAreaSize);
                    break;
            }
            if (r.contains(pos))
                return QList<int>() << i << 0;
        }
    }

    return QList<int>();
}

QList<int> QDockAreaLayout::findSeparator(const QPoint &pos) const
{
    QList<int> result;
    for (int i = 0; i < QInternal::DockCount; ++i) {
        const QDockAreaLayoutInfo &info = docks[i];
        if (info.isEmpty())
            continue;
        if (separatorRect(i).contains(pos)) {
            result << i;
            break;
        } else if (info.rect.contains(pos)) {
            result = docks[i].findSeparator(pos);
            if (!result.isEmpty()) {
                result.prepend(i);
                break;
            }
        }
    }

    return result;
}

QDockAreaLayoutInfo *QDockAreaLayout::info(QWidget *widget)
{
    for (int i = 0; i < QInternal::DockCount; ++i) {
        if (QDockAreaLayoutInfo *result = docks[i].info(widget))
            return result;
    }

    return 0;
}

QDockAreaLayoutInfo *QDockAreaLayout::info(QList<int> path)
{
    Q_ASSERT(!path.isEmpty());
    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);

    if (path.isEmpty())
        return &docks[index];

    return docks[index].info(path);
}

const QDockAreaLayoutInfo *QDockAreaLayout::info(QList<int> path) const
{
    return const_cast<QDockAreaLayout*>(this)->info(path);
}

QDockAreaLayoutItem &QDockAreaLayout::item(QList<int> path)
{
    Q_ASSERT(!path.isEmpty());
    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);
    return docks[index].item(path);
}

QRect QDockAreaLayout::itemRect(QList<int> path) const
{
    Q_ASSERT(!path.isEmpty());
    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);
    return docks[index].itemRect(path);
}

QRect QDockAreaLayout::separatorRect(int index) const
{
    if (docks[index].isEmpty())
        return QRect();
    QRect r = docks[index].rect;
    switch (index) {
        case QInternal::LeftDock:
            return QRect(r.right() + 1, r.top(), sep, r.height());
        case QInternal::RightDock:
            return QRect(r.left() - sep, r.top(), sep, r.height());
        case QInternal::TopDock:
            return QRect(r.left(), r.bottom() + 1, r.width(), sep);
        case QInternal::BottomDock:
            return QRect(r.left(), r.top() - sep, r.width(), sep);
        default:
            break;
    }
    return QRect();
}

QRect QDockAreaLayout::separatorRect(QList<int> path) const
{
    Q_ASSERT(!path.isEmpty());

    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);

    if (path.isEmpty())
        return separatorRect(index);
    else
        return docks[index].separatorRect(path);
}

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

QLayoutItem *QDockAreaLayout::plug(QList<int> path)
{
    Q_ASSERT(!path.isEmpty());
    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);
    return docks[index].plug(path);
}

QLayoutItem *QDockAreaLayout::unplug(QList<int> path)
{
    Q_ASSERT(!path.isEmpty());
    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);
    return docks[index].unplug(path);
}

void QDockAreaLayout::remove(QList<int> path)
{
    Q_ASSERT(!path.isEmpty());
    int index = path.takeFirst();
    Q_ASSERT(index >= 0 && index < QInternal::DockCount);
    docks[index].remove(path);
}

static inline int qMin(int i1, int i2, int i3) { return qMin(i1, qMin(i2, i3)); }
static inline int qMax(int i1, int i2, int i3) { return qMax(i1, qMax(i2, i3)); }

void QDockAreaLayout::getGrid(QVector<QLayoutStruct> *_ver_struct_list,
                                QVector<QLayoutStruct> *_hor_struct_list)
{
    QSize center_hint(0, 0);
    QSize center_min(0, 0);
    bool have_central = centralWidgetItem != 0 && !centralWidgetItem->isEmpty();
    if (have_central) {
        center_hint = centralWidgetRect.size();
        if (!center_hint.isValid())
            center_hint = centralWidgetItem->sizeHint();
        center_min = centralWidgetItem->minimumSize();
    }

    QRect center_rect = rect;
    if (!docks[QInternal: