qaccessiblewidgets.cpp

奇趣公司比较新的qt/emd版本

    return QAccessible::StaticText;
}
#endif // QT_NO_TEXTBROWSER

#ifndef QT_NO_CALENDARWIDGET
// ===================== QAccessibleCalendarWidget ========================
QAccessibleCalendarWidget::QAccessibleCalendarWidget(QWidget *widget)
    : QAccessibleWidgetEx(widget, Table)
{
    Q_ASSERT(qobject_cast<QCalendarWidget *>(widget));
}

QVariant QAccessibleCalendarWidget::invokeMethodEx(QAccessible::Method, int, const QVariantList &)
{
    return QVariant();
}

int QAccessibleCalendarWidget::childCount() const
{
   return calendarWidget()->isNavigationBarVisible() ? 2 : 1;
}

int QAccessibleCalendarWidget::indexOfChild(const QAccessibleInterface *child) const
{
    if (!child || !child->object() || childCount() <= 0)
        return -1;
    if (qobject_cast<QAbstractItemView *>(child->object()))
        return childCount();
    return 1;
}

int QAccessibleCalendarWidget::navigate(RelationFlag relation, int entry, QAccessibleInterface **target) const
{
    *target = 0;
    if (entry <= 0 || entry > childCount())
        return QAccessibleWidgetEx::navigate(relation, entry, target);
    QWidget *targetWidget = 0;
    switch (relation) {
    case Child:
        if (childCount() == 1) {
            targetWidget = calendarView();
        } else {
            if (entry == 1)
                targetWidget = navigationBar();
            else
                targetWidget = calendarView();
        }
        break;
    case Up:
        if (entry == 2)
            targetWidget = navigationBar();
        break;
    case Down:
        if (entry == 1 && childCount() == 2)
            targetWidget = calendarView();
        break;
    default:
        return QAccessibleWidgetEx::navigate(relation, entry, target);
    }
    *target = queryAccessibleInterface(targetWidget);
    return *target ? 0: -1;
}

QRect QAccessibleCalendarWidget::rect(int child) const
{
    if (!calendarWidget()->isVisible() || child > childCount())
        return QRect();
    if (child == 0)
        return QAccessibleWidgetEx::rect(child);
    QWidget *childWidget = 0;
    if (childCount() == 2)
        childWidget = child == 1 ? navigationBar() : calendarView();
    else
        childWidget = calendarView();
    return QRect(childWidget->mapToGlobal(QPoint(0, 0)), childWidget->size());
}

int QAccessibleCalendarWidget::childAt(int x, int y) const
{
    const QPoint globalTargetPos = QPoint(x, y);
    if (!rect(0).contains(globalTargetPos))
        return -1;
    if (rect(1).contains(globalTargetPos))
        return 1;
    if (rect(2).contains(globalTargetPos))
        return 2;
    return 0;
}

QCalendarWidget *QAccessibleCalendarWidget::calendarWidget() const
{
    return static_cast<QCalendarWidget *>(object());
}

QAbstractItemView *QAccessibleCalendarWidget::calendarView() const
{
    foreach (QObject *child, calendarWidget()->children()) {
        if (child->objectName() == QLatin1String("qt_calendar_calendarview"))
            return static_cast<QAbstractItemView *>(child);
    }
    return 0;
}

QWidget *QAccessibleCalendarWidget::navigationBar() const
{
    foreach (QObject *child, calendarWidget()->children()) {
        if (child->objectName() == QLatin1String("qt_calendar_navigationbar"))
            return static_cast<QWidget *>(child);
    }
    return 0;
}
#endif // QT_NO_CALENDARWIDGET

#ifndef QT_NO_DOCKWIDGET
QAccessibleDockWidget::QAccessibleDockWidget(QWidget *widget)
    : QAccessibleWidgetEx(widget, Window)
{

}

int QAccessibleDockWidget::navigate(RelationFlag relation, int entry, QAccessibleInterface **iface) const
{
    if (relation == Child) {
        if (entry == 1) {
            *iface = new QAccessibleTitleBar(dockWidget());
            return 0;
        } else if (entry == 2) {
            if (dockWidget()->widget())
                *iface = QAccessible::queryAccessibleInterface(dockWidget()->widget());
            return 0;
        }
        *iface = 0;
        return -1;
    }
    return QAccessibleWidgetEx::navigate(relation, entry, iface);
}

int QAccessibleDockWidget::childAt(int x, int y) const
{
    for (int i = childCount(); i >= 0; --i) {
        if (rect(i).contains(x,y))
            return i;
    }
    return -1;
}

int QAccessibleDockWidget::childCount() const
{
    return dockWidget()->widget() ? 2 : 1;
}

int QAccessibleDockWidget::indexOfChild(const QAccessibleInterface *child) const
{
    if (child) {
        if (qobject_cast<QDockWidget *>(child->object()) == dockWidget() && child->role(0) == TitleBar) {
            return 1;
        } else {
            return 2;   //###
        }
    }
    return -1;
}

QAccessible::Role QAccessibleDockWidget::role(int child) const
{
    switch (child) {
        case 0:
            return Window;
        case 1:
            return TitleBar;
        case 2:
            //###
            break;
        default:
            break;
    }
    return NoRole;
}

QAccessible::State QAccessibleDockWidget::state(int child) const
{
    //### mark tabified widgets as invisible
    return QAccessibleWidgetEx::state(child);
}

QRect QAccessibleDockWidget::rect (int child ) const
{
    QRect rect;
    bool mapToGlobal = true;
    if (child == 0) {
        if (dockWidget()->isFloating()) {
            rect = dockWidget()->frameGeometry();
            mapToGlobal = false;
        } else {
            rect = dockWidget()->rect();
        }
    }else if (child == 1) {
        QDockWidgetLayout *layout = qobject_cast<QDockWidgetLayout*>(dockWidget()->layout());
        rect = layout->titleArea();
    }else if (child == 2) {
        if (dockWidget()->widget())
            rect = dockWidget()->widget()->geometry();
    }
    if (rect.isNull())
        return rect;

    if (mapToGlobal)
        rect.moveTopLeft(dockWidget()->mapToGlobal(rect.topLeft()));

    return rect;
}

QVariant QAccessibleDockWidget::invokeMethodEx(QAccessible::Method, int, const QVariantList &)
{
    return QVariant();
}

QDockWidget *QAccessibleDockWidget::dockWidget() const
{
    return static_cast<QDockWidget *>(object());
}

////
//      QAccessibleTitleBar
////
QAccessibleTitleBar::QAccessibleTitleBar(QDockWidget *widget)
    : m_dockWidget(widget)
{

}

int QAccessibleTitleBar::navigate(RelationFlag relation, int entry, QAccessibleInterface **iface) const
{
    if (entry == 0 || relation == Self) {
        *iface = new QAccessibleTitleBar(dockWidget());
        return 0;
    }
    switch (relation) {
    case Child:
    case FocusChild:
        if (entry >= 1) {
            QDockWidgetLayout *layout = dockWidgetLayout();
            int index = 1;
            int role;
            for (role = QDockWidgetLayout::CloseButton; role <= QDockWidgetLayout::FloatButton; ++role) {
                QWidget *w = layout->widget((QDockWidgetLayout::Role)role);
                if (!w->isVisible())
                    continue;
                if (index == entry)
                    break;
                ++index;
            }
            *iface = 0;
            return role > QDockWidgetLayout::FloatButton ? -1 : index;
        }
        break;
    case Ancestor:
        {
        QAccessibleDockWidget *target = new QAccessibleDockWidget(dockWidget());
        int index;
        if (entry == 1) {
            *iface = target;
            return 0;
        }
        index = target->navigate(Ancestor, entry - 1, iface);
        delete target;
        return index;

        break;}
    case Sibling:
        return navigate(Child, entry, iface);
        break;
    default:
        break;
    }
    *iface = 0;
    return -1;
}

QAccessible::Relation QAccessibleTitleBar::relationTo(int /*child*/,  const QAccessibleInterface * /*other*/, int /*otherChild*/) const
{
    return Unrelated;   //###
}

int QAccessibleTitleBar::indexOfChild(const QAccessibleInterface * /*child*/) const
{
    return -1;
}

int QAccessibleTitleBar::childCount() const
{
    QDockWidgetLayout *layout = dockWidgetLayout();
    int count = 0;
    for (int role = QDockWidgetLayout::CloseButton; role <= QDockWidgetLayout::FloatButton; ++role) {
        QWidget *w = layout->widget((QDockWidgetLayout::Role)role);
        if (w && w->isVisible())
            ++count;
    }
    return count;
}

QString QAccessibleTitleBar::text(Text t, int child) const
{
    if (!child) {
        if (t == Value) {
            return dockWidget()->windowTitle();
        }
    }
    return QString();
}

QAccessible::State QAccessibleTitleBar::state(int child) const
{
    QAccessible::State state = Normal;
    if (child) {
        QDockWidgetLayout *layout = dockWidgetLayout();
        QAbstractButton *b = static_cast<QAbstractButton *>(layout->widget((QDockWidgetLayout::Role)child));
        if (b) {
            if (b->isDown())
                state |= Pressed;
        }
    } else {
        QDockWidget *w = dockWidget();
        if (w->testAttribute(Qt::WA_WState_Visible) == false)
            state |= Invisible;
        if (w->focusPolicy() != Qt::NoFocus && w->isActiveWindow())
            state |= Focusable;
        if (w->hasFocus())
            state |= Focused;
        if (!w->isEnabled())
            state |= Unavailable;
    }

    return state;
}

QRect QAccessibleTitleBar::rect (int child ) const
{
    bool mapToGlobal = true;
    QRect rect;
    if (child == 0) {
        if (dockWidget()->isFloating()) {
            rect = dockWidget()->frameGeometry();
            QPoint globalPos = dockWidget()->mapToGlobal( dockWidget()->widget()->rect().topLeft() );
            globalPos.ry()--;
            rect.setBottom(globalPos.y());
            mapToGlobal = false;
        } else {
            QDockWidgetLayout *layout = qobject_cast<QDockWidgetLayout*>(dockWidget()->layout());
            rect = layout->titleArea();
        }
    }else if (child >= 1 && child <= childCount()) {
        QDockWidgetLayout *layout = dockWidgetLayout();
        int index = 1;
        for (int role = QDockWidgetLayout::CloseButton; role <= QDockWidgetLayout::FloatButton; ++role) {
            QWidget *w = layout->widget((QDockWidgetLayout::Role)role);
            if (!w || !w->isVisible())
                continue;
            if (index == child) {
                rect = w->geometry();
                break;
            }
            ++index;
        }
    }
    if (rect.isNull())
        return rect;

    if (mapToGlobal)
        rect.moveTopLeft(dockWidget()->mapToGlobal(rect.topLeft()));
    return rect;
}

int QAccessibleTitleBar::childAt(int x, int y) const
{
    for (int i = childCount(); i >= 0; --i) {
        if (rect(i).contains(x,y))
            return i;
    }
    return -1;
}

QObject *QAccessibleTitleBar::object() const
{
    return m_dockWidget;
}

QDockWidgetLayout *QAccessibleTitleBar::dockWidgetLayout() const
{
    return qobject_cast<QDockWidgetLayout*>(dockWidget()->layout());
}

QDockWidget *QAccessibleTitleBar::dockWidget() const
{
    return m_dockWidget;
}

QString QAccessibleTitleBar::actionText(int action, Text t, int child) const
{
    QString str;
    if (child >= 1 && child <= childCount()) {
        if (t == Name) {
            switch (action) {
            case Press:
            case DefaultAction:
                if (child == QDockWidgetLayout::CloseButton) {
                    str = QDockWidget::tr("Close");
                } else if (child == QDockWidgetLayout::FloatButton) {