1 files changed, 876 insertions, 0 deletions

diff --git a/vcl/qt5/QtMenu.cxx b/vcl/qt5/QtMenu.cxx
new file mode 100644
index 000000000..83ca58ad4
--- /dev/null
+++ b/vcl/qt5/QtMenu.cxx
@@ -0,0 +1,876 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <QtMenu.hxx>
+#include <QtMenu.moc>
+
+#include <QtFrame.hxx>
+#include <QtInstance.hxx>
+#include <QtMainWindow.hxx>
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+#include <QtWidgets/QActionGroup>
+#else
+#include <QtGui/QActionGroup>
+#endif
+
+#include <QtWidgets/QButtonGroup>
+#include <QtWidgets/QHBoxLayout>
+#include <QtWidgets/QMenuBar>
+#include <QtWidgets/QPushButton>
+#include <QtWidgets/QStyle>
+
+#include <o3tl/safeint.hxx>
+#include <vcl/svapp.hxx>
+#include <sal/log.hxx>
+
+#include <strings.hrc>
+#include <bitmaps.hlst>
+
+#include <vcl/toolkit/floatwin.hxx>
+#include <window.h>
+
+// LO SalMenuButtonItem::mnId is sal_uInt16, so we go with -2, as -1 has a special meaning as automatic id
+constexpr int CLOSE_BUTTON_ID = -2;
+const QString gButtonGroupKey("QtMenu::ButtonGroup");
+
+static inline void lcl_force_menubar_layout_update(QMenuBar& rMenuBar)
+{
+    // just exists as a function to not comment it everywhere: forces reposition of the
+    // corner widget after its layout changes, which will otherwise just happen on resize.
+    // it unfortunatly has additional side effects; see QtMenu::GetMenuBarButtonRectPixel.
+    rMenuBar.adjustSize();
+}
+
+QtMenu::QtMenu(bool bMenuBar)
+    : mpVCLMenu(nullptr)
+    , mpParentSalMenu(nullptr)
+    , mpFrame(nullptr)
+    , mbMenuBar(bMenuBar)
+    , mpQMenuBar(nullptr)
+    , mpQMenu(nullptr)
+    , m_pButtonGroup(nullptr)
+{
+}
+
+bool QtMenu::VisibleMenuBar() { return true; }
+
+void QtMenu::InsertMenuItem(QtMenuItem* pSalMenuItem, unsigned nPos)
+{
+    sal_uInt16 nId = pSalMenuItem->mnId;
+    OUString aText = mpVCLMenu->GetItemText(nId);
+    NativeItemText(aText);
+    vcl::KeyCode nAccelKey = mpVCLMenu->GetAccelKey(nId);
+
+    pSalMenuItem->mpAction.reset();
+    pSalMenuItem->mpMenu.reset();
+
+    if (mbMenuBar)
+    {
+        // top-level menu
+        if (validateQMenuBar())
+        {
+            QMenu* pQMenu = new QMenu(toQString(aText), nullptr);
+            pSalMenuItem->mpMenu.reset(pQMenu);
+
+            if ((nPos != MENU_APPEND)
+                && (static_cast<size_t>(nPos) < o3tl::make_unsigned(mpQMenuBar->actions().size())))
+            {
+                mpQMenuBar->insertMenu(mpQMenuBar->actions()[nPos], pQMenu);
+            }
+            else
+            {
+                mpQMenuBar->addMenu(pQMenu);
+            }
+
+            // correct parent menu for generated menu
+            if (pSalMenuItem->mpSubMenu)
+            {
+                pSalMenuItem->mpSubMenu->mpQMenu = pQMenu;
+            }
+
+            connect(pQMenu, &QMenu::aboutToShow, this,
+                    [pSalMenuItem] { slotMenuAboutToShow(pSalMenuItem); });
+            connect(pQMenu, &QMenu::aboutToHide, this,
+                    [pSalMenuItem] { slotMenuAboutToHide(pSalMenuItem); });
+        }
+    }
+    else
+    {
+        if (!mpQMenu)
+        {
+            // no QMenu set, instantiate own one
+            mpOwnedQMenu.reset(new QMenu);
+            mpQMenu = mpOwnedQMenu.get();
+        }
+
+        if (pSalMenuItem->mpSubMenu)
+        {
+            // submenu
+            QMenu* pQMenu = new QMenu(toQString(aText), nullptr);
+            pSalMenuItem->mpMenu.reset(pQMenu);
+
+            if ((nPos != MENU_APPEND)
+                && (static_cast<size_t>(nPos) < o3tl::make_unsigned(mpQMenu->actions().size())))
+            {
+                mpQMenu->insertMenu(mpQMenu->actions()[nPos], pQMenu);
+            }
+            else
+            {
+                mpQMenu->addMenu(pQMenu);
+            }
+
+            // correct parent menu for generated menu
+            pSalMenuItem->mpSubMenu->mpQMenu = pQMenu;
+
+            ReinitializeActionGroup(nPos);
+
+            // clear all action groups since menu is recreated
+            pSalMenuItem->mpSubMenu->ResetAllActionGroups();
+
+            connect(pQMenu, &QMenu::aboutToShow, this,
+                    [pSalMenuItem] { slotMenuAboutToShow(pSalMenuItem); });
+            connect(pQMenu, &QMenu::aboutToHide, this,
+                    [pSalMenuItem] { slotMenuAboutToHide(pSalMenuItem); });
+        }
+        else
+        {
+            if (pSalMenuItem->mnType == MenuItemType::SEPARATOR)
+            {
+                QAction* pAction = new QAction(nullptr);
+                pSalMenuItem->mpAction.reset(pAction);
+                pAction->setSeparator(true);
+
+                if ((nPos != MENU_APPEND)
+                    && (static_cast<size_t>(nPos) < o3tl::make_unsigned(mpQMenu->actions().size())))
+                {
+                    mpQMenu->insertAction(mpQMenu->actions()[nPos], pAction);
+                }
+                else
+                {
+                    mpQMenu->addAction(pAction);
+                }
+
+                ReinitializeActionGroup(nPos);
+            }
+            else
+            {
+                // leaf menu
+                QAction* pAction = new QAction(toQString(aText), nullptr);
+                pSalMenuItem->mpAction.reset(pAction);
+
+                if ((nPos != MENU_APPEND)
+                    && (static_cast<size_t>(nPos) < o3tl::make_unsigned(mpQMenu->actions().size())))
+                {
+                    mpQMenu->insertAction(mpQMenu->actions()[nPos], pAction);
+                }
+                else
+                {
+                    mpQMenu->addAction(pAction);
+                }
+
+                ReinitializeActionGroup(nPos);
+
+                UpdateActionGroupItem(pSalMenuItem);
+
+                pAction->setShortcut(toQString(nAccelKey.GetName()));
+
+                connect(pAction, &QAction::triggered, this,
+                        [pSalMenuItem] { slotMenuTriggered(pSalMenuItem); });
+            }
+        }
+    }
+
+    QAction* pAction = pSalMenuItem->getAction();
+    if (pAction)
+    {
+        pAction->setEnabled(pSalMenuItem->mbEnabled);
+        pAction->setVisible(pSalMenuItem->mbVisible);
+    }
+}
+
+void QtMenu::ReinitializeActionGroup(unsigned nPos)
+{
+    const unsigned nCount = GetItemCount();
+
+    if (nCount == 0)
+    {
+        return;
+    }
+
+    if (nPos == MENU_APPEND)
+    {
+        nPos = nCount - 1;
+    }
+    else if (nPos >= nCount)
+    {
+        return;
+    }
+
+    QtMenuItem* pPrevItem = (nPos > 0) ? GetItemAtPos(nPos - 1) : nullptr;
+    QtMenuItem* pCurrentItem = GetItemAtPos(nPos);
+    QtMenuItem* pNextItem = (nPos < nCount - 1) ? GetItemAtPos(nPos + 1) : nullptr;
+
+    if (pCurrentItem->mnType == MenuItemType::SEPARATOR)
+    {
+        pCurrentItem->mpActionGroup.reset();
+
+        // if it's inserted into middle of existing group, split it into two groups:
+        // first goes original group, after separator goes new group
+        if (pPrevItem && pPrevItem->mpActionGroup && pNextItem && pNextItem->mpActionGroup
+            && (pPrevItem->mpActionGroup == pNextItem->mpActionGroup))
+        {
+            std::shared_ptr<QActionGroup> pFirstActionGroup = pPrevItem->mpActionGroup;
+            auto pSecondActionGroup = std::make_shared<QActionGroup>(nullptr);
+            pSecondActionGroup->setExclusive(true);
+
+            auto actions = pFirstActionGroup->actions();
+
+            for (unsigned idx = nPos + 1; idx < nCount; ++idx)
+            {
+                QtMenuItem* pModifiedItem = GetItemAtPos(idx);
+
+                if ((!pModifiedItem) || (!pModifiedItem->mpActionGroup))
+                {
+                    break;
+                }
+
+                pModifiedItem->mpActionGroup = pSecondActionGroup;
+                auto action = pModifiedItem->getAction();
+
+                if (actions.contains(action))
+                {
+                    pFirstActionGroup->removeAction(action);
+                    pSecondActionGroup->addAction(action);
+                }
+            }
+        }
+    }
+    else
+    {
+        if (!pCurrentItem->mpActionGroup)
+        {
+            // unless element is inserted between two separators, or a separator and an end of vector, use neighbouring group since it's shared
+            if (pPrevItem && pPrevItem->mpActionGroup)
+            {
+                pCurrentItem->mpActionGroup = pPrevItem->mpActionGroup;
+            }
+            else if (pNextItem && pNextItem->mpActionGroup)
+            {
+                pCurrentItem->mpActionGroup = pNextItem->mpActionGroup;
+            }
+            else
+            {
+                pCurrentItem->mpActionGroup = std::make_shared<QActionGroup>(nullptr);
+                pCurrentItem->mpActionGroup->setExclusive(true);
+            }
+        }
+
+        // if there's also a different group after this element, merge it
+        if (pNextItem && pNextItem->mpActionGroup
+            && (pCurrentItem->mpActionGroup != pNextItem->mpActionGroup))
+        {
+            auto pFirstCheckedAction = pCurrentItem->mpActionGroup->checkedAction();
+            auto pSecondCheckedAction = pNextItem->mpActionGroup->checkedAction();
+            auto actions = pNextItem->mpActionGroup->actions();
+
+            // first move all actions from second group to first one, and if first group already has checked action,
+            // and second group also has a checked action, uncheck action from second group
+            for (auto action : actions)
+            {
+                pNextItem->mpActionGroup->removeAction(action);
+
+                if (pFirstCheckedAction && pSecondCheckedAction && (action == pSecondCheckedAction))
+                {
+                    action->setChecked(false);
+                }
+
+                pCurrentItem->mpActionGroup->addAction(action);
+            }
+
+            // now replace all pointers to second group with pointers to first group
+            for (unsigned idx = nPos + 1; idx < nCount; ++idx)
+            {
+                QtMenuItem* pModifiedItem = GetItemAtPos(idx);
+
+                if ((!pModifiedItem) || (!pModifiedItem->mpActionGroup))
+                {
+                    break;
+                }
+
+                pModifiedItem->mpActionGroup = pCurrentItem->mpActionGroup;
+            }
+        }
+    }
+}
+
+void QtMenu::ResetAllActionGroups()
+{
+    for (unsigned nItem = 0; nItem < GetItemCount(); ++nItem)
+    {
+        QtMenuItem* pSalMenuItem = GetItemAtPos(nItem);
+        pSalMenuItem->mpActionGroup.reset();
+    }
+}
+
+void QtMenu::UpdateActionGroupItem(const QtMenuItem* pSalMenuItem)
+{
+    QAction* pAction = pSalMenuItem->getAction();
+    if (!pAction)
+        return;
+
+    bool bChecked = mpVCLMenu->IsItemChecked(pSalMenuItem->mnId);
+    MenuItemBits itemBits = mpVCLMenu->GetItemBits(pSalMenuItem->mnId);
+
+    if (itemBits & MenuItemBits::RADIOCHECK)
+    {
+        pAction->setCheckable(true);
+
+        if (pSalMenuItem->mpActionGroup)
+        {
+            pSalMenuItem->mpActionGroup->addAction(pAction);
+        }
+
+        pAction->setChecked(bChecked);
+    }
+    else
+    {
+        pAction->setActionGroup(nullptr);
+
+        if (itemBits & MenuItemBits::CHECKABLE)
+        {
+            pAction->setCheckable(true);
+            pAction->setChecked(bChecked);
+        }
+        else
+        {
+            pAction->setChecked(false);
+            pAction->setCheckable(false);
+        }
+    }
+}
+
+void QtMenu::InsertItem(SalMenuItem* pSalMenuItem, unsigned nPos)
+{
+    SolarMutexGuard aGuard;
+    QtMenuItem* pItem = static_cast<QtMenuItem*>(pSalMenuItem);
+
+    if (nPos == MENU_APPEND)
+        maItems.push_back(pItem);
+    else
+        maItems.insert(maItems.begin() + nPos, pItem);
+
+    pItem->mpParentMenu = this;
+
+    InsertMenuItem(pItem, nPos);
+}
+
+void QtMenu::RemoveItem(unsigned nPos)
+{
+    SolarMutexGuard aGuard;
+
+    if (nPos >= maItems.size())
+        return;
+
+    QtMenuItem* pItem = maItems[nPos];
+    pItem->mpAction.reset();
+    pItem->mpMenu.reset();
+
+    maItems.erase(maItems.begin() + nPos);
+
+    // Recalculate action groups if necessary:
+    // if separator between two QActionGroups was removed,
+    // it may be needed to merge them
+    if (nPos > 0)
+    {
+        ReinitializeActionGroup(nPos - 1);
+    }
+}
+
+void QtMenu::SetSubMenu(SalMenuItem* pSalMenuItem, SalMenu* pSubMenu, unsigned nPos)
+{
+    SolarMutexGuard aGuard;
+    QtMenuItem* pItem = static_cast<QtMenuItem*>(pSalMenuItem);
+    QtMenu* pQSubMenu = static_cast<QtMenu*>(pSubMenu);
+
+    pItem->mpSubMenu = pQSubMenu;
+    // at this point the pointer to parent menu may be outdated, update it too
+    pItem->mpParentMenu = this;
+
+    if (pQSubMenu != nullptr)
+    {
+        pQSubMenu->mpParentSalMenu = this;
+        pQSubMenu->mpQMenu = pItem->mpMenu.get();
+    }
+
+    // if it's not a menu bar item, then convert it to corresponding item if type if necessary.
+    // If submenu is present and it's an action, convert it to menu.
+    // If submenu is not present and it's a menu, convert it to action.
+    // It may be fine to proceed in any case, but by skipping other cases
+    // amount of unneeded actions taken should be reduced.
+    if (pItem->mpParentMenu->mbMenuBar || (pQSubMenu && pItem->mpMenu)
+        || ((!pQSubMenu) && pItem->mpAction))
+    {
+        return;
+    }
+
+    InsertMenuItem(pItem, nPos);
+}
+
+void QtMenu::SetFrame(const SalFrame* pFrame)
+{
+    auto* pSalInst(GetQtInstance());
+    assert(pSalInst);
+    if (!pSalInst->IsMainThread())
+    {
+        pSalInst->RunInMainThread([this, pFrame]() { SetFrame(pFrame); });
+        return;
+    }
+
+    SolarMutexGuard aGuard;
+    assert(mbMenuBar);
+    mpFrame = const_cast<QtFrame*>(static_cast<const QtFrame*>(pFrame));
+
+    mpFrame->SetMenu(this);
+
+    QtMainWindow* pMainWindow = mpFrame->GetTopLevelWindow();
+    if (!pMainWindow)
+        return;
+
+    mpQMenuBar = new QMenuBar();
+    pMainWindow->setMenuBar(mpQMenuBar);
+
+    QWidget* pWidget = mpQMenuBar->cornerWidget(Qt::TopRightCorner);
+    if (pWidget)
+    {
+        m_pButtonGroup = pWidget->findChild<QButtonGroup*>(gButtonGroupKey);
+        assert(m_pButtonGroup);
+        connect(m_pButtonGroup, QOverload<QAbstractButton*>::of(&QButtonGroup::buttonClicked), this,
+                &QtMenu::slotMenuBarButtonClicked);
+        QPushButton* pButton = static_cast<QPushButton*>(m_pButtonGroup->button(CLOSE_BUTTON_ID));
+        if (pButton)
+            connect(pButton, &QPushButton::clicked, this, &QtMenu::slotCloseDocument);
+    }
+    else
+        m_pButtonGroup = nullptr;
+    mpQMenu = nullptr;
+
+    DoFullMenuUpdate(mpVCLMenu);
+}
+
+void QtMenu::DoFullMenuUpdate(Menu* pMenuBar)
+{
+    // clear action groups since menu is rebuilt
+    ResetAllActionGroups();
+    ShowCloseButton(false);
+
+    for (sal_Int32 nItem = 0; nItem < static_cast<sal_Int32>(GetItemCount()); nItem++)
+    {
+        QtMenuItem* pSalMenuItem = GetItemAtPos(nItem);
+        InsertMenuItem(pSalMenuItem, nItem);
+        SetItemImage(nItem, pSalMenuItem, pSalMenuItem->maImage);
+        const bool bShowDisabled
+            = bool(pMenuBar->GetMenuFlags() & MenuFlags::AlwaysShowDisabledEntries)
+              || !bool(pMenuBar->GetMenuFlags() & MenuFlags::HideDisabledEntries);
+        const bool bVisible = bShowDisabled || mpVCLMenu->IsItemEnabled(pSalMenuItem->mnId);
+        pSalMenuItem->getAction()->setVisible(bVisible);
+
+        if (pSalMenuItem->mpSubMenu != nullptr)
+        {
+            pMenuBar->HandleMenuActivateEvent(pSalMenuItem->mpSubMenu->GetMenu());
+            pSalMenuItem->mpSubMenu->DoFullMenuUpdate(pMenuBar);
+            pMenuBar->HandleMenuDeActivateEvent(pSalMenuItem->mpSubMenu->GetMenu());
+        }
+    }
+}
+
+void QtMenu::ShowItem(unsigned nPos, bool bShow)
+{
+    if (nPos < maItems.size())
+    {
+        QtMenuItem* pSalMenuItem = GetItemAtPos(nPos);
+        QAction* pAction = pSalMenuItem->getAction();
+        if (pAction)
+            pAction->setVisible(bShow);
+        pSalMenuItem->mbVisible = bShow;
+    }
+}
+
+void QtMenu::SetItemBits(unsigned nPos, MenuItemBits)
+{
+    if (nPos < maItems.size())
+    {
+        QtMenuItem* pSalMenuItem = GetItemAtPos(nPos);
+        UpdateActionGroupItem(pSalMenuItem);
+    }
+}
+
+void QtMenu::CheckItem(unsigned nPos, bool bChecked)
+{
+    if (nPos < maItems.size())
+    {
+        QtMenuItem* pSalMenuItem = GetItemAtPos(nPos);
+        QAction* pAction = pSalMenuItem->getAction();
+        if (pAction)
+        {
+            pAction->setCheckable(true);
+            pAction->setChecked(bChecked);
+        }
+    }
+}
+
+void QtMenu::EnableItem(unsigned nPos, bool bEnable)
+{
+    if (nPos < maItems.size())
+    {
+        QtMenuItem* pSalMenuItem = GetItemAtPos(nPos);
+        QAction* pAction = pSalMenuItem->getAction();
+        if (pAction)
+            pAction->setEnabled(bEnable);
+        pSalMenuItem->mbEnabled = bEnable;
+    }
+}
+
+void QtMenu::SetItemText(unsigned, SalMenuItem* pItem, const OUString& rText)
+{
+    QtMenuItem* pSalMenuItem = static_cast<QtMenuItem*>(pItem);
+    QAction* pAction = pSalMenuItem->getAction();
+    if (pAction)
+    {
+        OUString aText(rText);
+        NativeItemText(aText);
+        pAction->setText(toQString(aText));
+    }
+}
+
+void QtMenu::SetItemImage(unsigned, SalMenuItem* pItem, const Image& rImage)
+{
+    QtMenuItem* pSalMenuItem = static_cast<QtMenuItem*>(pItem);
+
+    // Save new image to use it in DoFullMenuUpdate
+    pSalMenuItem->maImage = rImage;
+
+    QAction* pAction = pSalMenuItem->getAction();
+    if (!pAction)
+        return;
+
+    pAction->setIcon(QPixmap::fromImage(toQImage(rImage)));
+}
+
+void QtMenu::SetAccelerator(unsigned, SalMenuItem* pItem, const vcl::KeyCode&,
+                            const OUString& rText)
+{
+    QtMenuItem* pSalMenuItem = static_cast<QtMenuItem*>(pItem);
+    QAction* pAction = pSalMenuItem->getAction();
+    if (pAction)
+        pAction->setShortcut(QKeySequence(toQString(rText), QKeySequence::PortableText));
+}
+
+void QtMenu::GetSystemMenuData(SystemMenuData*) {}
+
+QtMenu* QtMenu::GetTopLevel()
+{
+    QtMenu* pMenu = this;
+    while (pMenu->mpParentSalMenu)
+        pMenu = pMenu->mpParentSalMenu;
+    return pMenu;
+}
+
+bool QtMenu::validateQMenuBar() const
+{
+    if (!mpQMenuBar)
+        return false;
+    assert(mpFrame);
+    QtMainWindow* pMainWindow = mpFrame->GetTopLevelWindow();
+    assert(pMainWindow);
+    const bool bValid = mpQMenuBar == pMainWindow->menuBar();
+    if (!bValid)
+    {
+        QtMenu* thisPtr = const_cast<QtMenu*>(this);
+        thisPtr->mpQMenuBar = nullptr;
+    }
+    return bValid;
+}
+
+void QtMenu::ShowMenuBar(bool bVisible)
+{
+    if (!validateQMenuBar())
+        return;
+
+    mpQMenuBar->setVisible(bVisible);
+    if (bVisible)
+        lcl_force_menubar_layout_update(*mpQMenuBar);
+}
+
+const QtFrame* QtMenu::GetFrame() const
+{
+    SolarMutexGuard aGuard;
+    const QtMenu* pMenu = this;
+    while (pMenu && !pMenu->mpFrame)
+        pMenu = pMenu->mpParentSalMenu;
+    return pMenu ? pMenu->mpFrame : nullptr;
+}
+
+void QtMenu::slotMenuTriggered(QtMenuItem* pQItem)
+{
+    if (!pQItem)
+        return;
+
+    QtMenu* pSalMenu = pQItem->mpParentMenu;
+    QtMenu* pTopLevel = pSalMenu->GetTopLevel();
+
+    Menu* pMenu = pSalMenu->GetMenu();
+    auto mnId = pQItem->mnId;
+
+    // HACK to allow HandleMenuCommandEvent to "not-set" the checked button
+    // LO expects a signal before an item state change, so reset the check item
+    if (pQItem->mpAction->isCheckable()
+        && (!pQItem->mpActionGroup || pQItem->mpActionGroup->actions().size() <= 1))
+        pQItem->mpAction->setChecked(!pQItem->mpAction->isChecked());
+    pTopLevel->GetMenu()->HandleMenuCommandEvent(pMenu, mnId);
+}
+
+void QtMenu::slotMenuAboutToShow(QtMenuItem* pQItem)
+{
+    if (pQItem)
+    {
+        QtMenu* pSalMenu = pQItem->mpSubMenu;
+        QtMenu* pTopLevel = pSalMenu->GetTopLevel();
+
+        Menu* pMenu = pSalMenu->GetMenu();
+
+        // following function may update the menu
+        pTopLevel->GetMenu()->HandleMenuActivateEvent(pMenu);
+    }
+}
+
+void QtMenu::slotMenuAboutToHide(QtMenuItem* pQItem)
+{
+    if (pQItem)
+    {
+        QtMenu* pSalMenu = pQItem->mpSubMenu;
+        QtMenu* pTopLevel = pSalMenu->GetTopLevel();
+
+        Menu* pMenu = pSalMenu->GetMenu();
+
+        pTopLevel->GetMenu()->HandleMenuDeActivateEvent(pMenu);
+    }
+}
+
+void QtMenu::NativeItemText(OUString& rItemText)
+{
+    // preserve literal '&'s in menu texts
+    rItemText = rItemText.replaceAll("&", "&&");
+
+    rItemText = rItemText.replace('~', '&');
+}
+
+void QtMenu::slotCloseDocument()
+{
+    MenuBar* pVclMenuBar = static_cast<MenuBar*>(mpVCLMenu.get());
+    if (pVclMenuBar)
+        Application::PostUserEvent(pVclMenuBar->GetCloseButtonClickHdl());
+}
+
+void QtMenu::slotMenuBarButtonClicked(QAbstractButton* pButton)
+{
+    MenuBar* pVclMenuBar = static_cast<MenuBar*>(mpVCLMenu.get());
+    if (pVclMenuBar)
+    {
+        SolarMutexGuard aGuard;
+        pVclMenuBar->HandleMenuButtonEvent(m_pButtonGroup->id(pButton));
+    }
+}
+
+QPushButton* QtMenu::ImplAddMenuBarButton(const QIcon& rIcon, const QString& rToolTip, int nId)
+{
+    if (!validateQMenuBar())
+        return nullptr;
+
+    QWidget* pWidget = mpQMenuBar->cornerWidget(Qt::TopRightCorner);
+    QHBoxLayout* pLayout;
+    if (!pWidget)
+    {
+        assert(!m_pButtonGroup);
+        pWidget = new QWidget(mpQMenuBar);
+        assert(!pWidget->layout());
+        pLayout = new QHBoxLayout();
+        pLayout->setContentsMargins(QMargins());
+        pLayout->setSpacing(0);
+        pWidget->setLayout(pLayout);
+        m_pButtonGroup = new QButtonGroup(pLayout);
+        m_pButtonGroup->setObjectName(gButtonGroupKey);
+        m_pButtonGroup->setExclusive(false);
+        connect(m_pButtonGroup, QOverload<QAbstractButton*>::of(&QButtonGroup::buttonClicked), this,
+                &QtMenu::slotMenuBarButtonClicked);
+        pWidget->show();
+        mpQMenuBar->setCornerWidget(pWidget, Qt::TopRightCorner);
+    }
+    else
+        pLayout = static_cast<QHBoxLayout*>(pWidget->layout());
+    assert(m_pButtonGroup);
+    assert(pLayout);
+
+    QPushButton* pButton = static_cast<QPushButton*>(m_pButtonGroup->button(nId));
+    if (pButton)
+        ImplRemoveMenuBarButton(nId);
+
+    pButton = new QPushButton();
+    // we don't want the button to increase the QMenuBar height, so a fixed size square it is
+    const int nFixedLength
+        = mpQMenuBar->height() - 2 * mpQMenuBar->style()->pixelMetric(QStyle::PM_MenuBarVMargin);
+    pButton->setFixedSize(nFixedLength, nFixedLength);
+    pButton->setIcon(rIcon);
+    pButton->setFlat(true);
+    pButton->setFocusPolicy(Qt::NoFocus);
+    pButton->setToolTip(rToolTip);
+
+    m_pButtonGroup->addButton(pButton, nId);
+    int nPos = pLayout->count();
+    if (m_pButtonGroup->button(CLOSE_BUTTON_ID))
+        nPos--;
+    pLayout->insertWidget(nPos, pButton, 0, Qt::AlignCenter);
+    // show must happen after adding the button to the layout, otherwise the button is
+    // shown, but not correct in the layout, if at all! Some times the layout ignores it.
+    pButton->show();
+
+    lcl_force_menubar_layout_update(*mpQMenuBar);
+
+    return pButton;
+}
+
+bool QtMenu::AddMenuBarButton(const SalMenuButtonItem& rItem)
+{
+    if (!validateQMenuBar())
+        return false;
+    return !!ImplAddMenuBarButton(QIcon(QPixmap::fromImage(toQImage(rItem.maImage))),
+                                  toQString(rItem.maToolTipText), rItem.mnId);
+}
+
+void QtMenu::ImplRemoveMenuBarButton(int nId)
+{
+    if (!validateQMenuBar())
+        return;
+
+    assert(m_pButtonGroup);
+    auto* pButton = m_pButtonGroup->button(nId);
+    assert(pButton);
+    QWidget* pWidget = mpQMenuBar->cornerWidget(Qt::TopRightCorner);
+    assert(pWidget);
+    QLayout* pLayout = pWidget->layout();
+    m_pButtonGroup->removeButton(pButton);
+    pLayout->removeWidget(pButton);
+    delete pButton;
+
+    lcl_force_menubar_layout_update(*mpQMenuBar);
+}
+
+void QtMenu::RemoveMenuBarButton(sal_uInt16 nId) { ImplRemoveMenuBarButton(nId); }
+
+tools::Rectangle QtMenu::GetMenuBarButtonRectPixel(sal_uInt16 nId, SalFrame* pFrame)
+{
+#ifdef NDEBUG
+    Q_UNUSED(pFrame);
+#endif
+    if (!validateQMenuBar())
+        return tools::Rectangle();
+
+    assert(mpFrame == static_cast<QtFrame*>(pFrame));
+    assert(m_pButtonGroup);
+    auto* pButton = static_cast<QPushButton*>(m_pButtonGroup->button(nId));
+    assert(pButton);
+
+    // unfortunatly, calling lcl_force_menubar_layout_update results in a temporary wrong menubar size,
+    // but it's the correct minimal size AFAIK and the layout seems correct, so just adjust the width.
+    QPoint aPos = pButton->mapTo(mpFrame->asChild(), QPoint());
+    aPos.rx() += (mpFrame->asChild()->width() - mpQMenuBar->width());
+    return tools::Rectangle(toPoint(aPos), toSize(pButton->size()));
+}
+
+void QtMenu::ShowCloseButton(bool bShow)
+{
+    if (!validateQMenuBar())
+        return;
+
+    if (!bShow && !m_pButtonGroup)
+        return;
+
+    QPushButton* pButton = nullptr;
+    if (m_pButtonGroup)
+        pButton = static_cast<QPushButton*>(m_pButtonGroup->button(CLOSE_BUTTON_ID));
+    if (!bShow && !pButton)
+        return;
+
+    if (!pButton)
+    {
+        QIcon aIcon;
+        if (QIcon::hasThemeIcon("window-close-symbolic"))
+            aIcon = QIcon::fromTheme("window-close-symbolic");
+        else
+            aIcon = QIcon(
+                QPixmap::fromImage(toQImage(Image(StockImage::Yes, SV_RESID_BITMAP_CLOSEDOC))));
+        pButton = ImplAddMenuBarButton(aIcon, toQString(VclResId(SV_HELPTEXT_CLOSEDOCUMENT)),
+                                       CLOSE_BUTTON_ID);
+        connect(pButton, &QPushButton::clicked, this, &QtMenu::slotCloseDocument);
+    }
+
+    if (bShow)
+        pButton->show();
+    else
+        pButton->hide();
+
+    lcl_force_menubar_layout_update(*mpQMenuBar);
+}
+
+bool QtMenu::ShowNativePopupMenu(FloatingWindow* pWin, const tools::Rectangle& rRect,
+                                 FloatWinPopupFlags nFlags)
+{
+    assert(mpQMenu);
+    DoFullMenuUpdate(mpVCLMenu);
+    mpQMenu->setTearOffEnabled(bool(nFlags & FloatWinPopupFlags::AllowTearOff));
+
+    const VclPtr<vcl::Window> xParent = pWin->ImplGetWindowImpl()->mpRealParent;
+    const QtFrame* pFrame = static_cast<QtFrame*>(xParent->ImplGetFrame());
+    assert(pFrame);
+    const tools::Rectangle aFloatRect = FloatingWindow::ImplConvertToAbsPos(xParent, rRect);
+    const QRect aRect = toQRect(aFloatRect, 1 / pFrame->devicePixelRatioF());
+    mpQMenu->exec(aRect.topLeft());
+
+    return true;
+}
+
+int QtMenu::GetMenuBarHeight() const
+{
+    if (!validateQMenuBar() || !mpQMenuBar->isVisible())
+        return 0;
+
+    return mpQMenuBar->height();
+}
+
+QtMenuItem::QtMenuItem(const SalItemParams* pItemData)
+    : mpParentMenu(nullptr)
+    , mpSubMenu(nullptr)
+    , mnId(pItemData->nId)
+    , mnType(pItemData->eType)
+    , mbVisible(true)
+    , mbEnabled(true)
+    , maImage(pItemData->aImage)
+{
+}
+
+QAction* QtMenuItem::getAction() const
+{
+    if (mpMenu)
+        return mpMenu->menuAction();
+    if (mpAction)
+        return mpAction.get();
+    return nullptr;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */