C++ RemoveActionFromCommand类代码示例

void QDesignerMenuBar::startDrag(const QPoint &pos)
{
    const int index = findAction(pos);
    if (m_currentIndex == -1 || index >= realActionCount())
        return;

    QAction *action = safeActionAt(index);

    QDesignerFormWindowInterface *fw = formWindow();
    RemoveActionFromCommand *cmd = new RemoveActionFromCommand(fw);
    cmd->init(this, action, actions().at(index + 1));
    fw->commandHistory()->push(cmd);

    adjustSize();

    hideMenu(index);

    QDrag *drag = new QDrag(this);
    drag->setPixmap(ActionRepositoryMimeData::actionDragPixmap(action));
    drag->setMimeData(new ActionRepositoryMimeData(action, Qt::MoveAction));

    const int old_index = m_currentIndex;
    m_currentIndex = -1;

    if (drag->start(Qt::MoveAction) == Qt::IgnoreAction) {
        InsertActionIntoCommand *cmd = new InsertActionIntoCommand(fw);
        cmd->init(this, action, safeActionAt(index));
        fw->commandHistory()->push(cmd);

        m_currentIndex = old_index;
        adjustSize();
    }
}

void ToolBarEventFilter::slotRemoveSelectedAction()
{
    QAction *action = qobject_cast<QAction*>(sender());
    if (!action)
        return;

    QAction *a = qvariant_cast<QAction*>(action->data());
    Q_ASSERT(a != 0);

    QDesignerFormWindowInterface *fw = formWindow();
    Q_ASSERT(fw);

    const ActionList actions = m_toolBar->actions();
    const int pos = actions.indexOf(a);
    QAction *action_before = 0;
    if (pos != -1 && actions.count() > pos + 1)
        action_before = actions.at(pos + 1);

    RemoveActionFromCommand *cmd = new RemoveActionFromCommand(fw);
    cmd->init(m_toolBar, a, action_before);
    fw->commandHistory()->push(cmd);
}

void ToolBarEventFilter::startDrag(const QPoint &pos, Qt::KeyboardModifiers modifiers)
{
    const int index = actionIndexAt(m_toolBar, pos, m_toolBar->orientation());
    if (index == - 1)
        return;

    const ActionList actions = m_toolBar->actions();
    QAction *action = actions.at(index);
    QDesignerFormWindowInterface *fw = formWindow();

    const Qt::DropAction dropAction = (modifiers & Qt::ControlModifier) ? Qt::CopyAction : Qt::MoveAction;
    if (dropAction == Qt::MoveAction) {
        RemoveActionFromCommand *cmd = new RemoveActionFromCommand(fw);
        const int nextIndex = index + 1;
        QAction *nextAction = nextIndex < actions.size() ? actions.at(nextIndex) : 0;
        cmd->init(m_toolBar, action, nextAction);
        fw->commandHistory()->push(cmd);
    }

    QDrag *drag = new QDrag(m_toolBar);
    drag->setPixmap(ActionRepositoryMimeData::actionDragPixmap( action));
    drag->setMimeData(new ActionRepositoryMimeData(action, dropAction));

    if (drag->start(dropAction) == Qt::IgnoreAction) {
        hideDragIndicator();
        if (dropAction == Qt::MoveAction) {
            const ActionList currentActions = m_toolBar->actions();
            QAction *previous = 0;
            if (index >= 0 && index < currentActions.size())
                previous = currentActions.at(index);
            InsertActionIntoCommand *cmd = new InsertActionIntoCommand(fw);
            cmd->init(m_toolBar, action, previous);
            fw->commandHistory()->push(cmd);
        }
    }
}