qdesigner_menu.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 1,357 行 · 第 1/3 页

    if (ctrl)
        (void) swap(m_currentIndex, m_currentIndex - 1);

    m_currentIndex = qMax(0, --m_currentIndex);
    // Always re-select, swapping destroys order
    update();
    selectCurrentAction();
}

void QDesignerMenu::moveDown(bool ctrl)
{
    if (m_currentIndex == actions().count() - 1) {
        return;
    }

    if (ctrl)
        (void) swap(m_currentIndex + 1, m_currentIndex);

    m_currentIndex = qMin(actions().count() - 1, ++m_currentIndex);
    update();
    if (!ctrl)
        selectCurrentAction();
}

QAction *QDesignerMenu::currentAction() const
{
    if (m_currentIndex < 0 || m_currentIndex >= actions().count())
        return 0;

    return safeActionAt(m_currentIndex);
}

int QDesignerMenu::realActionCount() const
{
    return actions().count() - 2; // 2 fake actions
}

void QDesignerMenu::selectCurrentAction()
{
    QAction *action = currentAction();
    if (!action || action == m_addSeparator || action == m_addItem)
        return;

    QDesignerObjectInspector *oi = 0;
    if (QDesignerFormWindowInterface *fw = formWindow())
        oi = qobject_cast<QDesignerObjectInspector *>(fw->core()->objectInspector());

    if (!oi)
        return;

    oi->clearSelection();
    if (QMenu *menu = action->menu())
        oi->selectObject(menu);
    else
        oi->selectObject(action);
}

void QDesignerMenu::createRealMenuAction(QAction *action)
{
    if (action->menu())
        return; // nothing to do

    QDesignerFormWindowInterface *fw = formWindow();
    QDesignerFormEditorInterface *core = formWindow()->core();

    QDesignerMenu *menu = findOrCreateSubMenu(action);
    m_subMenus.remove(action);

    action->setMenu(menu);
    menu->setTitle(action->text());

    Q_ASSERT(fw);

    core->widgetFactory()->initialize(menu);

    const QString niceObjectName = ActionEditor::actionTextToName(menu->title(), QLatin1String("menu"));
    menu->setObjectName(niceObjectName);

    core->metaDataBase()->add(menu);
    fw->ensureUniqueObjectName(menu);

    QAction *menuAction = menu->menuAction();
    core->metaDataBase()->add(menuAction);
}

void QDesignerMenu::removeRealMenu(QAction *action)
{
    QDesignerMenu *menu = qobject_cast<QDesignerMenu*>(action->menu());
    if (menu == 0)
        return;
    action->setMenu(0);
    m_subMenus.insert(action, menu);
    QDesignerFormEditorInterface *core = formWindow()->core();
    core->metaDataBase()->remove(menu);
}

QDesignerMenu *QDesignerMenu::findOrCreateSubMenu(QAction *action)
{
    if (action->menu())
        return qobject_cast<QDesignerMenu*>(action->menu());

    QDesignerMenu *menu = m_subMenus.value(action);
    if (!menu) {
        menu = new QDesignerMenu(this);
        m_subMenus.insert(action, menu);
    }

    return menu;
}

bool QDesignerMenu::canCreateSubMenu(QAction *action) const // ### improve it's a bit too slow
{
    foreach (const QWidget *aw, action->associatedWidgets())
        if (aw != this) {
            if (const QMenu *m = qobject_cast<const QMenu *>(aw)) {
                if (m->actions().contains(action))
                    return false; // sorry
            } else {
                if (const QToolBar *tb = qobject_cast<const QToolBar *>(aw))
                    if (tb->actions().contains(action))
                        return false; // sorry
            }
        }
    return true;
}

void QDesignerMenu::slotShowSubMenuNow()
{
    m_showSubMenuTimer->stop();

    if (m_lastSubMenuIndex == m_currentIndex)
        return;

    if (m_lastSubMenuIndex != -1)
        hideSubMenu();

    if (m_currentIndex >= realActionCount())
        return;

    QAction *action = currentAction();

    if (action->isSeparator() || !canCreateSubMenu(action))
        return;

    if (QMenu *menu = findOrCreateSubMenu(action)) {
        if (!menu->isVisible()) {
            if ((menu->windowFlags() & Qt::Popup) != Qt::Popup)
                menu->setWindowFlags(Qt::Popup);
            const QRect g = actionGeometry(action);
            menu->move(mapToGlobal(g.topRight()));
            menu->show();
            menu->setFocus();
        } else {
            menu->raise();
        }
        menu->setFocus();

        m_lastSubMenuIndex = m_currentIndex;
    }
}

void QDesignerMenu::showSubMenu(QAction *action)
{
    m_showSubMenuTimer->stop();

    if (m_editor->isVisible() || !action || qobject_cast<SpecialMenuAction*>(action)
            || action->isSeparator() || !isVisible())
        return;

    m_showSubMenuTimer->start(300);
}

QDesignerMenu *QDesignerMenu::parentMenu() const
{
    return qobject_cast<QDesignerMenu*>(parentWidget());
}

QDesignerMenuBar *QDesignerMenu::parentMenuBar() const
{
    if (QDesignerMenuBar *mb = qobject_cast<QDesignerMenuBar*>(parentWidget())) {
        return mb;
    } else if (QDesignerMenu *m = parentMenu()) {
        return m->parentMenuBar();
    }

    return 0;
}

void QDesignerMenu::setVisible(bool visible)
{
    if (visible)
        m_currentIndex = 0;
    else
        m_lastSubMenuIndex = -1;

    QMenu::setVisible(visible);

}

void QDesignerMenu::adjustSpecialActions()
{
    removeAction(m_addItem);
    removeAction(m_addSeparator);
    addAction(m_addItem);
    addAction(m_addSeparator);
}

bool QDesignerMenu::interactive(bool i)
{
    const bool old = m_interactive;
    m_interactive = i;
    return old;
}

void QDesignerMenu::enterEditMode()
{
    if (m_currentIndex >= 0 && m_currentIndex <= realActionCount()) {
        showLineEdit();
    } else {
        hideSubMenu();
        QDesignerFormWindowInterface *fw = formWindow();
        fw->beginCommand(tr("Add separator"));
        QAction *sep = createAction(QString(), true);

        InsertActionIntoCommand *cmd = new InsertActionIntoCommand(fw);
        cmd->init(this, sep, safeActionAt(realActionCount()));
        fw->commandHistory()->push(cmd);

        if (parentMenu()) {
            QAction *parent_action = parentMenu()->currentAction();
            if (parent_action->menu() == 0) {
                CreateSubmenuCommand *cmd = new CreateSubmenuCommand(fw);
                cmd->init(parentMenu(), parentMenu()->currentAction());
                fw->commandHistory()->push(cmd);
            }
        }

        fw->endCommand();

        m_currentIndex = actions().indexOf(m_addItem);
        update();
    }
}

void QDesignerMenu::leaveEditMode(LeaveEditMode mode)
{
    if (mode == Default)
        return;

    QAction *action = 0;

    QDesignerFormWindowInterface *fw = formWindow();
    if (m_currentIndex < realActionCount()) {
        action = safeActionAt(m_currentIndex);
        fw->beginCommand(QApplication::translate("Command", "Set action text"));
    } else {
        Q_ASSERT(fw != 0);
        fw->beginCommand(QApplication::translate("Command", "Insert action"));
        action = createAction(ActionEditor::actionTextToName(m_editor->text()));
        InsertActionIntoCommand *cmd = new InsertActionIntoCommand(fw);
        cmd->init(this, action, currentAction());
        fw->commandHistory()->push(cmd);
    }

    SetPropertyCommand *cmd = new SetPropertyCommand(fw);
    cmd->init(action, QLatin1String("text"), m_editor->text());
    fw->commandHistory()->push(cmd);

    if (parentMenu()) {
        QAction *parent_action = parentMenu()->currentAction();
        if (parent_action->menu() == 0) {
            CreateSubmenuCommand *cmd = new CreateSubmenuCommand(fw);
            cmd->init(parentMenu(), parentMenu()->currentAction(), action);
            fw->commandHistory()->push(cmd);
        }
    }

    update();
    fw->endCommand();
}

QAction *QDesignerMenu::safeMenuAction(QDesignerMenu *menu) const
{
    QAction *action = menu->menuAction();

    if (!action)
        action = m_subMenus.key(menu);

    return action;
}

void QDesignerMenu::showLineEdit()
{
    m_showSubMenuTimer->stop();

    QAction *action = 0;

    if (m_currentIndex < realActionCount())
        action = safeActionAt(m_currentIndex);
    else
        action = m_addItem;

    if (action->isSeparator())
        return;

    hideSubMenu();

    // open edit field for item name
    setFocus();

    const QString text = action != m_addItem ? action->text() : QString();
    m_editor->setText(text);
    m_editor->selectAll();
    m_editor->setGeometry(actionGeometry(action).adjusted(1, 1, -2, -2));
    m_editor->show();
    m_editor->setFocus();
}

QAction *QDesignerMenu::createAction(const QString &objectName, bool separator)
{
    QDesignerFormWindowInterface *fw = formWindow();
    Q_ASSERT(fw);
    return ToolBarEventFilter::createAction(fw, objectName, separator);
}

// ### share with QDesignerMenu::swap
bool QDesignerMenu::swap(int a, int b)
{
    const int left = qMin(a, b);
    int right = qMax(a, b);

    QAction *action_a = safeActionAt(left);
    QAction *action_b = safeActionAt(right);

    if (action_a == action_b
            || !action_a
            || !action_b
            || qobject_cast<SpecialMenuAction*>(action_a)
            || qobject_cast<SpecialMenuAction*>(action_b))
        return false; // nothing to do

    right = qMin(right, realActionCount());
    if (right < 0)
        return false; // nothing to do

    QDesignerFormWindowInterface *fw = formWindow();
    fw->beginCommand(QApplication::translate("Command", "Move action"));

    QAction *action_b_before = safeActionAt(right + 1);

    RemoveActionFromCommand *cmd1 = new RemoveActionFromCommand(fw);
    cmd1->init(this, action_b, action_b_before, false);
    fw->commandHistory()->push(cmd1);

    QAction *action_a_before = safeActionAt(left + 1);

    InsertActionIntoCommand *cmd2 = new InsertActionIntoCommand(fw);
    cmd2->init(this, action_b, action_a_before, false);
    fw->commandHistory()->push(cmd2);

    RemoveActionFromCommand *cmd3 = new RemoveActionFromCommand(fw);
    cmd3->init(this, action_a, action_b, false);
    fw->commandHistory()->push(cmd3);

    InsertActionIntoCommand *cmd4 = new InsertActionIntoCommand(fw);
    cmd4->init(this, action_a, action_b_before, true);
    fw->commandHistory()->push(cmd4);

    fw->endCommand();

    return true;
}

QAction *QDesignerMenu::safeActionAt(int index) const
{
    if (index < 0 || index >= actions().count())
        return 0;

    return actions().at(index);
}

void QDesignerMenu::hideSubMenu()
{
    m_lastSubMenuIndex = -1;
    foreach (QMenu *subMenu, qFindChildren<QMenu*>(this)) {
        subMenu->hide();
    }
}

void QDesignerMenu::deleteAction()
{
    QAction *action = currentAction();
    const int pos = actions().indexOf(action);
    QAction *action_before = 0;
    if (pos != -1)
        action_before = safeActionAt(pos + 1);

    QDesignerFormWindowInterface *fw = formWindow();
    RemoveActionFromCommand *cmd = new RemoveActionFromCommand(fw);
    cmd->init(this, action, action_before);
    fw->commandHistory()->push(cmd);

    update();
}

void QDesignerMenu::deactivateMenu()
{
    m_deactivateWindowTimer->start(10);
}

void QDesignerMenu::slotDeactivateNow()
{
    m_deactivateWindowTimer->stop();

    if (m_dragging)
        return;

    QDesignerMenu *root = findRootMenu();

    if (! root->findActivatedMenu()) {
        root->hide();
        root->hideSubMenu();
    }
}

void QDesignerMenu::drawSelection(QPainter *p, const QRect &r)
{
    p->save();

    QColor c = Qt::blue;
    p->setPen(QPen(c, 1));
    c.setAlpha(32);
    p->setBrush(c);
    p->drawRect(r);

    p->restore();
}

void QDesignerMenu::keyPressEvent(QKeyEvent *event)
{
    event->ignore();
}

void QDesignerMenu::keyReleaseEvent(QKeyEvent *event)
{
    event->ignore();
}