qtoolbutton.cpp

奇趣公司比较新的qt/emd版本

}

/*!
    Shows (pops up) the associated popup menu. If there is no such
    menu, this function does nothing. This function does not return
    until the popup menu has been closed by the user.
*/
void QToolButton::showMenu()
{
    Q_D(QToolButton);
    if (!d->hasMenu()) {
        d->menuButtonDown = false;
        return; // no menu to show
    }

    d->menuButtonDown = true;
    repaint();
    d->popupTimer.stop();
    d->popupTimerDone();
}

void QToolButtonPrivate::_q_buttonPressed()
{
    Q_Q(QToolButton);
    if (!hasMenu())
        return; // no menu to show

    if (delay > 0 && popupMode == QToolButton::DelayedPopup)
        popupTimer.start(delay, q);
    else if  (popupMode == QToolButton::InstantPopup)
        q->showMenu();
}

void QToolButtonPrivate::popupTimerDone()
{
    Q_Q(QToolButton);
    popupTimer.stop();
    if (!menuButtonDown && !down)
        return;

    menuButtonDown = true;
    QPointer<QMenu> actualMenu;
    bool mustDeleteActualMenu = false;
    if(menuAction) {
        actualMenu = menuAction->menu();
        if (q->actions().size() > 1)
            qWarning("QToolButton: Menu in setMenu() overriding actions set in addAction!");
    } else if (defaultAction && defaultAction->menu()) {
        actualMenu = defaultAction->menu();
    } else {
        actualMenu = new QMenu(q);
        mustDeleteActualMenu = true;
        QList<QAction*> actions = q->actions();
        for(int i = 0; i < actions.size(); i++)
            actualMenu->addAction(actions.at(i));
    }
    repeat = q->autoRepeat();
    q->setAutoRepeat(false);
    bool horizontal = true;
#if !defined(QT_NO_TOOLBAR)
    QToolBar *tb = qobject_cast<QToolBar*>(q->parentWidget());
    if (tb && tb->orientation() == Qt::Vertical)
        horizontal = false;
#endif
    QPoint p;
    QRect screen = qApp->desktop()->availableGeometry(q);
    QSize sh = ((QToolButton*)(QMenu*)actualMenu)->receivers(SIGNAL(aboutToShow()))? QSize() : actualMenu->sizeHint();
    QRect rect = q->rect();
    if (horizontal) {
        if (q->isRightToLeft()) {
            if (q->mapToGlobal(QPoint(0, rect.bottom())).y() + sh.height() <= screen.height()) {
                p = q->mapToGlobal(rect.bottomRight());
            } else {
                p = q->mapToGlobal(rect.topRight() - QPoint(0, sh.height()));
            }
            p.rx() -= sh.width();
        } else {
            if (q->mapToGlobal(QPoint(0, rect.bottom())).y() + sh.height() <= screen.height()) {
                p = q->mapToGlobal(rect.bottomLeft());
            } else {
                p = q->mapToGlobal(rect.topLeft() - QPoint(0, sh.height()));
            }
        }
    } else {
        if (q->isRightToLeft()) {
            if (q->mapToGlobal(QPoint(rect.left(), 0)).x() - sh.width() <= screen.x()) {
                p = q->mapToGlobal(rect.topRight());
            } else {
                p = q->mapToGlobal(rect.topLeft());
                p.rx() -= sh.width();
            }
        } else {
            if (q->mapToGlobal(QPoint(rect.right(), 0)).x() + sh.width() <= screen.right()) {
                p = q->mapToGlobal(rect.topRight());
            } else {
                p = q->mapToGlobal(rect.topLeft() - QPoint(sh.width(), 0));
            }
        }
    }
    p.rx() = qMax(screen.left(), qMin(p.x(), screen.right() - sh.width()));
    p.ry() += 1;
    QPointer<QToolButton> that = q;
    actualMenu->setNoReplayFor(q);
    QObject::connect(actualMenu, SIGNAL(aboutToHide()), q, SLOT(_q_updateButtonDown()));
    actualMenu->d_func()->causedPopup.widget = q;
    actualMenu->d_func()->causedPopup.action = defaultAction;
    actualMenu->exec(p);
    QObject::disconnect(actualMenu, SIGNAL(aboutToHide()), q, SLOT(_q_updateButtonDown()));
    if (mustDeleteActualMenu)
        delete actualMenu;
    if (!that)
        return;

    if (repeat)
        q->setAutoRepeat(true);
}

void QToolButtonPrivate::_q_updateButtonDown()
{
    Q_Q(QToolButton);
    menuButtonDown = false;
    if (q->isDown())
        q->setDown(false);
    else
        q->repaint();
}
#endif // QT_NO_MENU

#ifdef QT3_SUPPORT
/*!
    \fn void QToolButton::setPopupDelay(int delay)

    Use the style hint QStyle::SH_ToolButton_PopupDelay instead.
*/
void QToolButton::setPopupDelay(int delay)
{
    Q_D(QToolButton);
    d->userDefinedPopupDelay = true;
    d->delay = delay;

    update();
}

/*!
    Use the style hint QStyle::SH_ToolButton_PopupDelay instead.
*/
int QToolButton::popupDelay() const
{
    Q_D(const QToolButton);
    return d->delay;
}
#endif

#ifndef QT_NO_MENU
/*! \enum QToolButton::ToolButtonPopupMode

    Describes how a menu should be popped up for tool buttons that has
    a menu set or contains a list of actions.

    \value DelayedPopup After pressing and holding the tool button
    down for a certain amount of time (the timeout is style dependant,
    see QStyle::SH_ToolButton_PopupDelay), the menu is displayed.  A
    typical application example is the "back" button in some web
    browsers's tool bars. If the user clicks it, the browser simply
    browses back to the previous page.  If the user presses and holds
    the button down for a while, the tool button shows a menu
    containing the current history list

    \value MenuButtonPopup In this mode the tool button displays a
    special arrow to indicate that a menu is present. The menu is
    displayed when the arrow part of the button is pressed.

    \value InstantPopup The menu is displayed, without delay, when
    the tool button is pressed. In this mode, the button's own action
    is not triggered.
*/

/*!
    \property QToolButton::popupMode
    \brief describes the way that popup menus are used with tool buttons
*/

void QToolButton::setPopupMode(ToolButtonPopupMode mode)
{
    Q_D(QToolButton);
    d->popupMode = mode;
}

QToolButton::ToolButtonPopupMode QToolButton::popupMode() const
{
    Q_D(const QToolButton);
    return d->popupMode;
}
#endif

/*!
    \property QToolButton::autoRaise
    \brief whether auto-raising is enabled or not.

    The default is disabled (i.e. false).

    This property is currently ignored on Mac OS X when using QMacStyle.
*/
void QToolButton::setAutoRaise(bool enable)
{
    Q_D(QToolButton);
    d->autoRaise = enable;

    update();
}

bool QToolButton::autoRaise() const
{
    Q_D(const QToolButton);
    return d->autoRaise;
}

/*!
  Sets the default action to \a action.

  If a tool button has a default action, the action defines the
  button's properties like text, icon, tool tip, etc.
 */
void QToolButton::setDefaultAction(QAction *action)
{
    Q_D(QToolButton);
#ifndef QT_NO_MENU
    bool hadMenu = false;
    hadMenu = d->hasMenu();
#endif
    d->defaultAction = action;
    if (!action)
        return;
    if (!actions().contains(action))
        addAction(action);
    setText(action->iconText());
    setIcon(action->icon());
#ifndef QT_NO_TOOLTIP
    setToolTip(action->toolTip());
#endif
#ifndef QT_NO_STATUSTIP
    setStatusTip(action->statusTip());
#endif
#ifndef QT_NO_WHATSTHIS
    setWhatsThis(action->whatsThis());
#endif
#ifndef QT_NO_MENU
    if (action->menu() && !hadMenu) {
        // new 'default' popup mode defined introduced by tool bar. We
        // should have changed QToolButton's default instead. Do that
        // in 4.2.
        setPopupMode(QToolButton::MenuButtonPopup);
    }
#endif
    setCheckable(action->isCheckable());
    setChecked(action->isChecked());
    setEnabled(action->isEnabled());
    if (action->d_func()->fontSet)
        setFont(action->font());
}


/*!
  Returns the default action.

  \sa setDefaultAction()
 */
QAction *QToolButton::defaultAction() const
{
    Q_D(const QToolButton);
    return d->defaultAction;
}



/*!
  \reimp
 */
void QToolButton::nextCheckState()
{
    Q_D(QToolButton);
    if (!d->defaultAction)
        QAbstractButton::nextCheckState();
    else
        d->defaultAction->trigger();
}

/*! \reimp */
bool QToolButton::event(QEvent *e)
{
    return QAbstractButton::event(e);
}

/*! \internal
 */
QToolButton::QToolButton(QToolButtonPrivate &dd, QWidget *parent)
    :QAbstractButton(dd, parent)
{
    Q_D(QToolButton);
    d->init();
}

/*!
    \fn void QToolButton::setPixmap(const QPixmap &pixmap)

    Use setIcon(QIcon(pixmap)) instead.
*/

/*!
    \fn void QToolButton::setIconSet(const QIcon &icon)

    Use setIcon() instead.
*/

/*!
    \fn void QToolButton::setTextLabel(const QString &text, bool tooltip)

    Use setText() and setToolTip() instead.
*/

/*!
    \fn QString QToolButton::textLabel() const

    Use text() instead.
*/

/*!
    \fn QIcon QToolButton::iconSet() const

    Use icon() instead.
*/

/*!
    \fn void QToolButton::openPopup()

    Use showMenu() instead.
*/

/*!
    \fn void QToolButton::setPopup(QMenu* popup)

    Use setMenu() instead.
*/

/*!
    \fn QMenu* QToolButton::popup() const

    Use menu() instead.
*/

/*!
    \fn TextPosition QToolButton::textPosition() const

    Use toolButtonStyle() instead.
*/

/*!
    \fn void QToolButton::setTextPosition(QToolButton::TextPosition pos)

    Use setToolButtonStyle() instead.
*/

/*!
    \fn bool QToolButton::usesBigPixmap() const

    Use iconSize() instead.
*/

/*!
    \fn void QToolButton::setUsesBigPixmap(bool enable)

    Use setIconSize() instead.
*/

/*!
    \fn bool QToolButton::usesTextLabel() const

    Use toolButtonStyle() instead.
*/

/*!
    \fn void QToolButton::setUsesTextLabel(bool enable)

    Use setToolButtonStyle() instead.
*/
#include "moc_qtoolbutton.cpp"

#endif