Quelle  window.cxx   Sprache: C

/* -*- 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/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <sal/config.h>

#include <rtl/strbuf.hxx>
#include <sal/log.hxx>

#include <sal/types.h>
#include <comphelper/diagnose_ex.hxx>
#include <vcl/salgtype.hxx>
#include <vcl/event.hxx>
#include <vcl/cursor.hxx>
#include <vcl/svapp.hxx>
#include <vcl/transfer.hxx>
#include <vcl/vclevent.hxx>
#include <vcl/window.hxx>
#include <vcl/syswin.hxx>
#include <vcl/dockwin.hxx>
#include <vcl/wall.hxx>
#include <vcl/toolkit/fixed.hxx>
#include <vcl/toolkit/button.hxx>
#include <vcl/taskpanelist.hxx>
#include <vcl/toolkit/unowrap.hxx>
#include <tools/lazydelete.hxx>
#include <vcl/virdev.hxx>
#include <vcl/settings.hxx>
#include <vcl/sysdata.hxx>
#include <vcl/ptrstyle.hxx>
#include <vcl/IDialogRenderable.hxx>

#include <vcl/uitest/uiobject.hxx>

#include <ImplOutDevData.hxx>
#include <impfontcache.hxx>
#include <salframe.hxx>
#include <salobj.hxx>
#include <salinst.hxx>
#include <salgdi.hxx>
#include <svdata.hxx>
#include <window.h>
#include <toolbox.h>
#include <brdwin.hxx>
#include <helpwin.hxx>
#include <dndlistenercontainer.hxx>
#include <dndeventdispatcher.hxx>

#include <com/sun/star/accessibility/AccessibleRelation.hpp>
#include <com/sun/star/accessibility/XAccessible.hpp>
#include <com/sun/star/accessibility/XAccessibleEditableText.hpp>
#include <com/sun/star/awt/XVclWindowPeer.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboard.hpp>
#include <com/sun/star/datatransfer/dnd/XDragGestureRecognizer.hpp>
#include <com/sun/star/datatransfer/dnd/XDropTarget.hpp>
#include <com/sun/star/rendering/CanvasFactory.hpp>
#include <com/sun/star/rendering/XSpriteCanvas.hpp>
#include <comphelper/configuration.hxx>
#include <comphelper/lok.hxx>
#include <comphelper/processfactory.hxx>
#include <osl/diagnose.h>
#include <tools/debug.hxx>
#include <tools/json_writer.hxx>
#include <boost/property_tree/ptree.hpp>

#include <cassert>
#include <typeinfo>

#ifdef _WIN32 // see #140456#
#include <win/salframe.h>
#endif

#include "impldockingwrapper.hxx"

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::datatransfer::clipboard;
using namespace ::com::sun::star::datatransfer::dnd;

namespace vcl {

Window::Window( WindowType eType )
    : mpWindowImpl(new WindowImpl( *this, eType ))
{
    // true: this outdev will be mirrored if RTL window layout (UI mirroring) is globally active
    mpWindowImpl->mxOutDev->mbEnableRTL = AllSettings::GetLayoutRTL();
}

Window::Window( vcl::Window* pParent, WinBits nStyle )
    : mpWindowImpl(new WindowImpl( *this, WindowType::WINDOW ))
{
    // true: this outdev will be mirrored if RTL window layout (UI mirroring) is globally active
    mpWindowImpl->mxOutDev->mbEnableRTL = AllSettings::GetLayoutRTL();

    ImplInit( pParent, nStyle, nullptr );
}

#if OSL_DEBUG_LEVEL > 0
namespace
{
     OString lcl_createWindowInfo(const vcl::Window* pWindow)
     {
         // skip border windows, they do not carry information that
         // would help with diagnosing the problem
         const vcl::Window* pTempWin( pWindow );
         while ( pTempWin && pTempWin->GetType() == WindowType::BORDERWINDOW ) {
             pTempWin = pTempWin->GetWindow( GetWindowType::FirstChild );
         }
         // check if pTempWin is not null, otherwise use the
         // original address
         if ( pTempWin ) {
             pWindow = pTempWin;
         }

         return OString::Concat(" ") +
            typeid( *pWindow ).name() +
            "(" +
             OUStringToOString(
                 pWindow->GetText(),
                 RTL_TEXTENCODING_UTF8
                 ) +
            ")";
     }
}
#endif

void Window::dispose()
{
    assert( mpWindowImpl );
    assert( !mpWindowImpl->mbInDispose ); // should only be called from disposeOnce()
    assert( (!mpWindowImpl->mpParent ||
             mpWindowImpl->mpParent->mpWindowImpl) &&
            "vcl::Window child should have its parent disposed first" );

    // remove Key and Mouse events issued by Application::PostKey/MouseEvent
    Application::RemoveMouseAndKeyEvents( this );

    // Dispose of the canvas implementation (which, currently, has an
    // own wrapper window as a child to this one.
    GetOutDev()->ImplDisposeCanvas();

    mpWindowImpl->mbInDispose = true;

    CallEventListeners( VclEventId::ObjectDying );

    // do not send child events for frames that were registered as native frames
    if( !IsNativeFrame() && mpWindowImpl->mbReallyVisible )
        if ( ImplIsAccessibleCandidate() && GetAccessibleParentWindow() )
            GetAccessibleParentWindow()->CallEventListeners( VclEventId::WindowChildDestroyed, this );

    // remove associated data structures from dockingmanager
    ImplGetDockingManager()->RemoveWindow( this );

    // remove ownerdraw decorated windows from list in the top-most frame window
    if( (GetStyle() & WB_OWNERDRAWDECORATION) && mpWindowImpl->mbFrame )
    {
        ::std::vector< VclPtr<vcl::Window> >& rList = ImplGetOwnerDrawList();
        auto p = ::std::find( rList.begin(), rList.end(), VclPtr<vcl::Window>(this) );
        if( p != rList.end() )
            rList.erase( p );
    }

    // shutdown drag and drop
    if( mpWindowImpl->mxDNDListenerContainer.is() )
        mpWindowImpl->mxDNDListenerContainer->dispose();

    if( mpWindowImpl->mbFrame && mpWindowImpl->mpFrameData )
    {
        try
        {
            // deregister drop target listener
            if( mpWindowImpl->mpFrameData->mxDropTargetListener.is() )
            {
                Reference< XDragGestureRecognizer > xDragGestureRecognizer(mpWindowImpl->mpFrameData->mxDragSource, UNO_QUERY);
                if( xDragGestureRecognizer.is() )
                {
                    xDragGestureRecognizer->removeDragGestureListener(mpWindowImpl->mpFrameData->mxDropTargetListener);
                }

                mpWindowImpl->mpFrameData->mxDropTarget->removeDropTargetListener( mpWindowImpl->mpFrameData->mxDropTargetListener );
                mpWindowImpl->mpFrameData->mxDropTargetListener.clear();
            }

            // shutdown drag and drop for this frame window
            Reference< XComponent > xComponent( mpWindowImpl->mpFrameData->mxDropTarget, UNO_QUERY );

            // DNDEventDispatcher does not hold a reference of the DropTarget,
            // so it's ok if it does not support XComponent
            if( xComponent.is() )
                xComponent->dispose();
        }
        catch (const Exception&)
        {
            // can be safely ignored here.
        }
    }

    UnoWrapperBase* pWrapper = UnoWrapperBase::GetUnoWrapper( false );
    if ( pWrapper )
        pWrapper->WindowDestroyed( this );

    // MT: Must be called after WindowDestroyed!
    // Otherwise, if the accessible is a VCLXWindow, it will try to destroy this window again!
    // But accessibility implementations from applications need this dispose.
    if ( mpWindowImpl->mxAccessible.is() )
    {
        Reference< XComponent> xC( mpWindowImpl->mxAccessible, UNO_QUERY );
        if ( xC.is() )
            xC->dispose();
        mpWindowImpl->mxAccessible.clear();
    }

    if (mpWindowImpl->mpAccessibleInfos)
        mpWindowImpl->mpAccessibleInfos->xAccessibleParent.clear();

    ImplSVData* pSVData = ImplGetSVData();

    if ( ImplGetSVHelpData().mpHelpWin && (ImplGetSVHelpData().mpHelpWin->GetParent() == this) )
        ImplDestroyHelpWindow( true );

    SAL_WARN_IF(pSVData->mpWinData->mpTrackWin.get() == this, "vcl.window",
                "Window::~Window(): Window is in TrackingMode");
    SAL_WARN_IF(IsMouseCaptured(), "vcl.window",
                "Window::~Window(): Window has the mouse captured");

    // due to old compatibility
    if (pSVData->mpWinData->mpTrackWin == this)
        EndTracking();
    if (IsMouseCaptured())
        ReleaseMouse();

#if OSL_DEBUG_LEVEL > 0
    // always perform these tests in debug builds
    {
        OStringBuffer aErrorStr;
        bool        bError = false;
        vcl::Window*     pTempWin;

        if ( mpWindowImpl->mpFirstChild )
        {
            OStringBuffer aTempStr = "Window (" +
                lcl_createWindowInfo(this) +
                ") with live children destroyed: ";
            pTempWin = mpWindowImpl->mpFirstChild;
            while ( pTempWin )
            {
                aTempStr.append(lcl_createWindowInfo(pTempWin));
                pTempWin = pTempWin->mpWindowImpl->mpNext;
            }
            OSL_FAIL( aTempStr.getStr() );
            Application::Abort(OStringToOUString(aTempStr, RTL_TEXTENCODING_UTF8));
        }

        if (mpWindowImpl->mpFrameData != nullptr)
        {
            pTempWin = mpWindowImpl->mpFrameData->mpFirstOverlap;
            while ( pTempWin )
            {
                if ( ImplIsRealParentPath( pTempWin ) )
                {
                    bError = true;
                    aErrorStr.append(lcl_createWindowInfo(pTempWin));
                }
                pTempWin = pTempWin->mpWindowImpl->mpNextOverlap;
            }
            if ( bError )
            {
                OString aTempStr =
                    "Window (" +
                    lcl_createWindowInfo(this) +
                    ") with live SystemWindows destroyed: " +
                    aErrorStr;
                OSL_FAIL(aTempStr.getStr());
                Application::Abort(OStringToOUString(aTempStr, RTL_TEXTENCODING_UTF8));
            }
        }

        bError = false;
        pTempWin = pSVData->maFrameData.mpFirstFrame;
        while ( pTempWin )
        {
            if ( ImplIsRealParentPath( pTempWin ) )
            {
                bError = true;
                aErrorStr.append(lcl_createWindowInfo(pTempWin));
            }
            pTempWin = pTempWin->mpWindowImpl->mpFrameData->mpNextFrame;
        }
        if ( bError )
        {
            OString aTempStr =  "Window (" +
                lcl_createWindowInfo(this) +
                ") with live SystemWindows destroyed: " +
                aErrorStr;
            OSL_FAIL( aTempStr.getStr() );
            Application::Abort(OStringToOUString(aTempStr, RTL_TEXTENCODING_UTF8));
        }

        if ( mpWindowImpl->mpFirstOverlap )
        {
            OStringBuffer aTempStr = "Window (" +
                lcl_createWindowInfo(this) +
                ") with live SystemWindows destroyed: ";
            pTempWin = mpWindowImpl->mpFirstOverlap;
            while ( pTempWin )
            {
                aTempStr.append(lcl_createWindowInfo(pTempWin));
                pTempWin = pTempWin->mpWindowImpl->mpNext;
            }
            OSL_FAIL( aTempStr.getStr() );
            Application::Abort(OStringToOUString(aTempStr, RTL_TEXTENCODING_UTF8));
        }

        vcl::Window* pMyParent = GetParent();
        SystemWindow* pMySysWin = nullptr;

        while ( pMyParent )
        {
            if ( pMyParent->IsSystemWindow() )
            {
                pMySysWin = dynamic_cast<SystemWindow *>(pMyParent);
            }
            pMyParent = pMyParent->GetParent();
        }
        if ( pMySysWin && pMySysWin->ImplIsInTaskPaneList( this ) )
        {
            OString aTempStr = "Window (" +
                lcl_createWindowInfo(this) +
                ") still in TaskPanelList!";
            OSL_FAIL( aTempStr.getStr() );
            Application::Abort(OStringToOUString(aTempStr, RTL_TEXTENCODING_UTF8));
        }
    }
#endif

    if( mpWindowImpl->mbIsInTaskPaneList )
    {
        vcl::Window* pMyParent = GetParent();
        SystemWindow* pMySysWin = nullptr;

        while ( pMyParent )
        {
            if ( pMyParent->IsSystemWindow() )
            {
                pMySysWin = dynamic_cast<SystemWindow *>(pMyParent);
            }
            pMyParent = pMyParent->GetParent();
        }
        if ( pMySysWin && pMySysWin->ImplIsInTaskPaneList( this ) )
        {
            pMySysWin->GetTaskPaneList()->RemoveWindow( this );
        }
        else
        {
            SAL_WARN( "vcl", "Window (" << GetText() << ") not found in TaskPanelList");
        }
    }

    // remove from size-group if necessary
    remove_from_all_size_groups();

    // clear mnemonic labels
    std::vector<VclPtr<FixedText> > aMnemonicLabels(list_mnemonic_labels());
    for (auto const& mnemonicLabel : aMnemonicLabels)
    {
        remove_mnemonic_label(mnemonicLabel);
    }

    // hide window in order to trigger the Paint-Handling
    Hide();

    // EndExtTextInputMode
    if (pSVData->mpWinData->mpExtTextInputWin == this)
    {
        EndExtTextInput();
        if (pSVData->mpWinData->mpExtTextInputWin == this)
            pSVData->mpWinData->mpExtTextInputWin = nullptr;
    }

    // check if the focus window is our child
    bool bHasFocusedChild = false;
    if (pSVData->mpWinData->mpFocusWin && ImplIsRealParentPath(pSVData->mpWinData->mpFocusWin))
    {
        // #122232#, this must not happen and is an application bug ! but we try some cleanup to hopefully avoid crashes, see below
        bHasFocusedChild = true;
#if OSL_DEBUG_LEVEL > 0
        OUString aTempStr = "Window (" + GetText() +
                ") with focused child window destroyed ! THIS WILL LEAD TO CRASHES AND MUST BE FIXED !";
        SAL_WARN( "vcl", aTempStr );
        Application::Abort(aTempStr);
#endif
    }

    // if we get focus pass focus to another window
    vcl::Window* pOverlapWindow = ImplGetFirstOverlapWindow();
    if (pSVData->mpWinData->mpFocusWin == this
        || bHasFocusedChild) // #122232#, see above, try some cleanup
    {
        if ( mpWindowImpl->mbFrame )
        {
            pSVData->mpWinData->mpFocusWin = nullptr;
            pOverlapWindow->mpWindowImpl->mpLastFocusWindow = nullptr;
        }
        else
        {
            vcl::Window* pParent = GetParent();
            vcl::Window* pBorderWindow = mpWindowImpl->mpBorderWindow;
        // when windows overlap, give focus to the parent
        // of the next FrameWindow
            if ( pBorderWindow )
            {
                if ( pBorderWindow->ImplIsOverlapWindow() )
                    pParent = pBorderWindow->mpWindowImpl->mpOverlapWindow;
            }
            else if ( ImplIsOverlapWindow() )
                pParent = mpWindowImpl->mpOverlapWindow;

            if ( pParent && pParent->IsEnabled() && pParent->IsInputEnabled() && ! pParent->IsInModalMode() )
                pParent->GrabFocus();
            else
                mpWindowImpl->mpFrameWindow->GrabFocus();

            // If the focus was set back to 'this' set it to nothing
            if (pSVData->mpWinData->mpFocusWin == this)
            {
                pSVData->mpWinData->mpFocusWin = nullptr;
                pOverlapWindow->mpWindowImpl->mpLastFocusWindow = nullptr;
            }
        }
    }

    if ( pOverlapWindow != nullptr &&
         pOverlapWindow->mpWindowImpl->mpLastFocusWindow == this )
        pOverlapWindow->mpWindowImpl->mpLastFocusWindow = nullptr;

    // reset hint for DefModalDialogParent
    if( pSVData->maFrameData.mpActiveApplicationFrame == this )
        pSVData->maFrameData.mpActiveApplicationFrame = nullptr;

    // reset hint of what was the last wheeled window
    if (pSVData->mpWinData->mpLastWheelWindow == this)
        pSVData->mpWinData->mpLastWheelWindow = nullptr;

    // reset marked windows
    if ( mpWindowImpl->mpFrameData != nullptr )
    {
        if ( mpWindowImpl->mpFrameData->mpFocusWin == this )
            mpWindowImpl->mpFrameData->mpFocusWin = nullptr;
        if ( mpWindowImpl->mpFrameData->mpMouseMoveWin == this )
            mpWindowImpl->mpFrameData->mpMouseMoveWin = nullptr;
        if ( mpWindowImpl->mpFrameData->mpMouseDownWin == this )
            mpWindowImpl->mpFrameData->mpMouseDownWin = nullptr;
    }

    // reset Deactivate-Window
    if (pSVData->mpWinData->mpLastDeacWin == this)
        pSVData->mpWinData->mpLastDeacWin = nullptr;

    if ( mpWindowImpl->mbFrame && mpWindowImpl->mpFrameData )
    {
        if ( mpWindowImpl->mpFrameData->mnFocusId )
            Application::RemoveUserEvent( mpWindowImpl->mpFrameData->mnFocusId );
        mpWindowImpl->mpFrameData->mnFocusId = nullptr;
        if ( mpWindowImpl->mpFrameData->mnMouseMoveId )
            Application::RemoveUserEvent( mpWindowImpl->mpFrameData->mnMouseMoveId );
        mpWindowImpl->mpFrameData->mnMouseMoveId = nullptr;
    }

    // release SalGraphics
    VclPtr<OutputDevice> pOutDev = GetOutDev();
    pOutDev->ReleaseGraphics();

    // remove window from the lists
    ImplRemoveWindow( true );

    // de-register as "top window child" at our parent, if necessary
    if ( mpWindowImpl->mbFrame )
    {
        bool bIsTopWindow
            = mpWindowImpl->mpWinData && (mpWindowImpl->mpWinData->mnIsTopWindow == 1);
        if ( mpWindowImpl->mpRealParent && bIsTopWindow )
        {
            ImplWinData* pParentWinData = mpWindowImpl->mpRealParent->ImplGetWinData();

            auto myPos = ::std::find( pParentWinData->maTopWindowChildren.begin(),
                pParentWinData->maTopWindowChildren.end(), VclPtr<vcl::Window>(this) );
            SAL_WARN_IF( myPos == pParentWinData->maTopWindowChildren.end(), "vcl.window", "Window::~Window: inconsistency in top window chain!" );
            if ( myPos != pParentWinData->maTopWindowChildren.end() )
                pParentWinData->maTopWindowChildren.erase( myPos );
        }
    }

    mpWindowImpl->mpWinData.reset();

    // remove BorderWindow or Frame window data
    mpWindowImpl->mpBorderWindow.disposeAndClear();
    if ( mpWindowImpl->mbFrame )
    {
        if ( pSVData->maFrameData.mpFirstFrame == this )
            pSVData->maFrameData.mpFirstFrame = mpWindowImpl->mpFrameData->mpNextFrame;
        else
        {
            sal_Int32 nWindows = 0;
            vcl::Window* pSysWin = pSVData->maFrameData.mpFirstFrame;
            while ( pSysWin && pSysWin->mpWindowImpl->mpFrameData->mpNextFrame.get() != this )
            {
                pSysWin = pSysWin->mpWindowImpl->mpFrameData->mpNextFrame;
                nWindows++;
            }

            if ( pSysWin )
            {
                assert (mpWindowImpl->mpFrameData->mpNextFrame.get() != pSysWin);
                pSysWin->mpWindowImpl->mpFrameData->mpNextFrame = mpWindowImpl->mpFrameData->mpNextFrame;
            }
            else // if it is not in the list, we can't remove it.
                SAL_WARN("vcl.window", "Window " << this << " marked as frame window, "
                         "is missing from list of " << nWindows << " frames");
        }
        if (mpWindowImpl->mpFrame) // otherwise exception during init
        {
            mpWindowImpl->mpFrame->SetCallback( nullptr, nullptr );
            pSVData->mpDefInst->DestroyFrame( mpWindowImpl->mpFrame );
        }
        assert (mpWindowImpl->mpFrameData->mnFocusId == nullptr);
        assert (mpWindowImpl->mpFrameData->mnMouseMoveId == nullptr);

        mpWindowImpl->mpFrameData->mpBuffer.disposeAndClear();
        delete mpWindowImpl->mpFrameData;
        mpWindowImpl->mpFrameData = nullptr;
    }

    if (mpWindowImpl->mxWindowPeer)
        mpWindowImpl->mxWindowPeer->dispose();

    // should be the last statements
    mpWindowImpl.reset();

    pOutDev.disposeAndClear();
    // just to make loplugin:vclwidgets happy
    VclReferenceBase::dispose();
}

Window::~Window()
{
    disposeOnce();
}

// We will eventually being removing the inheritance of OutputDevice
// from Window. It will be replaced with a transient relationship such
// that the OutputDevice is only live for the scope of the Paint method.
// In the meantime this can help move us towards a Window use an
// OutputDevice, not being one.

::OutputDevice const* Window::GetOutDev() const
{
    return mpWindowImpl ? mpWindowImpl->mxOutDev.get() : nullptr;
}

::OutputDevice* Window::GetOutDev()
{
    return mpWindowImpl ? mpWindowImpl->mxOutDev.get() : nullptr;
}

Color WindowOutputDevice::GetBackgroundColor() const
{
    return mxOwnerWindow->GetDisplayBackground().GetColor();
}

bool WindowOutputDevice::CanEnableNativeWidget() const
{
    return mxOwnerWindow->IsNativeWidgetEnabled();
}

} /* namespace vcl */

WindowImpl::WindowImpl( vcl::Window& rWindow, WindowType eType )
{
    mxOutDev = VclPtr<vcl::WindowOutputDevice>::Create(rWindow);
    maZoom                              = Fraction( 1, 1 );
    mfPartialScrollX                    = 0.0;
    mfPartialScrollY                    = 0.0;
    maWinRegion                         = vcl::Region(true);
    maWinClipRegion                     = vcl::Region(true);
    mpWinData                           = nullptr;                      // Extra Window Data, that we don't need for all windows
    mpFrameData                         = nullptr;                      // Frame Data
    mpFrame                             = nullptr;                      // Pointer to frame window
    mpSysObj                            = nullptr;
    mpFrameWindow                       = nullptr;                      // window to top level parent (same as frame window)
    mpOverlapWindow                     = nullptr;                      // first overlap parent
    mpBorderWindow                      = nullptr;                      // Border-Window
    mpClientWindow                      = nullptr;                      // Client-Window of a FrameWindow
    mpParent                            = nullptr;                      // parent (incl. BorderWindow)
    mpRealParent                        = nullptr;                      // real parent (excl. BorderWindow)
    mpFirstChild                        = nullptr;                      // first child window
    mpLastChild                         = nullptr;                      // last child window
    mpFirstOverlap                      = nullptr;                      // first overlap window (only set in overlap windows)
    mpLastOverlap                       = nullptr;                      // last overlap window (only set in overlap windows)
    mpPrev                              = nullptr;                      // prev window
    mpNext                              = nullptr;                      // next window
    mpNextOverlap                       = nullptr;                      // next overlap window of frame
    mpLastFocusWindow                   = nullptr;                      // window for focus restore
    mpDlgCtrlDownWindow                 = nullptr;                      // window for dialog control
    mnEventListenersIteratingCount = 0;
    mnChildEventListenersIteratingCount = 0;
    mpCursor                            = nullptr;                      // cursor
    maPointer                           = PointerStyle::Arrow;
    mpVCLXWindow                        = nullptr;
    mpAccessibleInfos                   = nullptr;
    maControlForeground                 = COL_TRANSPARENT;  // no foreground set
    maControlBackground                 = COL_TRANSPARENT;  // no background set
    mnLeftBorder                        = 0;                         // width of left border
    mnTopBorder                         = 0;                         // width of top border
    mnRightBorder                       = 0;                         // width of right border
    mnBottomBorder                      = 0;                         // width of bottom border
    mnWidthRequest                      = -1;                        // width request
    mnHeightRequest                     = -1;                        // height request
    mnOptimalWidthCache                 = -1;                        // optimal width cache
    mnOptimalHeightCache                = -1;                        // optimal height cache
    mnX                                 = 0;                         // X-Position to Parent
    mnY                                 = 0;                         // Y-Position to Parent
    mnAbsScreenX                        = 0;                         // absolute X-position on screen, used for RTL window positioning
    mpChildClipRegion                   = nullptr;                      // Child-Clip-Region when ClipChildren
    mpPaintRegion                       = nullptr;                      // Paint-ClipRegion
    mnStyle                             = 0;                         // style (init in ImplInitWindow)
    mnPrevStyle                         = 0;                         // prevstyle (set in SetStyle)
    mnExtendedStyle                     = WindowExtendedStyle::NONE; // extended style (init in ImplInitWindow)
    meType                              = eType;                     // type
    mnGetFocusFlags                     = GetFocusFlags::NONE;       // Flags for GetFocus()-Call
    mnWaitCount                         = 0;                         // Wait-Count (>1 == "wait" mouse pointer)
    mnPaintFlags                        = ImplPaintFlags::NONE;      // Flags for ImplCallPaint
    mnParentClipMode                    = ParentClipMode::NONE;      // Flags for Parent-ClipChildren-Mode
    mnActivateMode                      = ActivateModeFlags::NONE;   // Will be converted in System/Overlap-Windows
    mnDlgCtrlFlags                      = DialogControlFlags::NONE;  // DialogControl-Flags
    meAlwaysInputMode                   = AlwaysInputNone;           // AlwaysEnableInput not called
    meHalign                            = VclAlign::Fill;
    meValign                            = VclAlign::Fill;
    mePackType                          = VclPackType::Start;
    mnPadding                           = 0;
    mnGridHeight                        = 1;
    mnGridLeftAttach                    = -1;
    mnGridTopAttach                     = -1;
    mnGridWidth                         = 1;
    mnBorderWidth                       = 0;
    mnMarginLeft                        = 0;
    mnMarginRight                       = 0;
    mnMarginTop                         = 0;
    mnMarginBottom                      = 0;
    mbFrame                             = false;                     // true: Window is a frame window
    mbBorderWin                         = false;                     // true: Window is a border window
    mbOverlapWin                        = false;                     // true: Window is an overlap window
    mbSysWin                            = false;                     // true: SystemWindow is the base class
    mbDialog                            = false;                     // true: Dialog is the base class
    mbDockWin                           = false;                     // true: DockingWindow is the base class
    mbFloatWin                          = false;                     // true: FloatingWindow is the base class
    mbPushButton                        = false;                     // true: PushButton is the base class
    mbToolBox                           = false;                     // true: ToolBox is the base class
    mbMenuFloatingWindow                = false;                     // true: MenuFloatingWindow is the base class
    mbSplitter                          = false;                     // true: Splitter is the base class
    mbVisible                           = false;                     // true: Show( true ) called
    mbOverlapVisible                    = false;                     // true: Hide called for visible window from ImplHideAllOverlapWindow()
    mbDisabled                          = false;                     // true: Enable( false ) called
    mbInputDisabled                     = false;                     // true: EnableInput( false ) called
    mbNoUpdate                          = false;                     // true: SetUpdateMode( false ) called
    mbNoParentUpdate                    = false;                     // true: SetParentUpdateMode( false ) called
    mbActive                            = false;                     // true: Window Active
    mbReallyVisible                     = false;                     // true: this and all parents to an overlapped window are visible
    mbReallyShown                       = false;                     // true: this and all parents to an overlapped window are shown
    mbInInitShow                        = false;                     // true: we are in InitShow
    mbChildPtrOverwrite                 = false;                     // true: PointerStyle overwrites Child-Pointer
    mbNoPtrVisible                      = false;                     // true: ShowPointer( false ) called
    mbPaintFrame                        = false;                     // true: Paint is visible, but not painted
    mbInPaint                           = false;                     // true: Inside PaintHdl
    mbMouseButtonDown                   = false;                     // true: BaseMouseButtonDown called
    mbMouseButtonUp                     = false;                     // true: BaseMouseButtonUp called
    mbKeyInput                          = false;                     // true: BaseKeyInput called
    mbKeyUp                             = false;                     // true: BaseKeyUp called
    mbCommand                           = false;                     // true: BaseCommand called
    mbDefPos                            = true;                      // true: Position is not Set
    mbDefSize                           = true;                      // true: Size is not Set
    mbCallMove                          = true;                      // true: Move must be called by Show
    mbCallResize                        = true;                      // true: Resize must be called by Show
    mbWaitSystemResize                  = true;                      // true: Wait for System-Resize
    mbInitWinClipRegion                 = true;                      // true: Calc Window Clip Region
    mbInitChildRegion                   = false;                     // true: InitChildClipRegion
    mbWinRegion                         = false;                     // true: Window Region
    mbClipChildren                      = false;                     // true: Child-window should be clipped
    mbClipSiblings                      = false;                     // true: Adjacent Child-window should be clipped
    mbChildTransparent                  = false;                     // true: Child-windows are allowed to switch to transparent (incl. Parent-CLIPCHILDREN)
    mbPaintTransparent                  = false;                     // true: Paints should be executed on the Parent
    mbMouseTransparent                  = false;                     // true: Window is transparent for Mouse
    mbDlgCtrlStart                      = false;                     // true: From here on own Dialog-Control
    mbFocusVisible                      = false;                     // true: Focus Visible
    mbUseNativeFocus                    = false;
    mbNativeFocusVisible                = false;                     // true: native Focus Visible
    mbInShowFocus                       = false;                     // prevent recursion
    mbInHideFocus                       = false;                     // prevent recursion
    mbTrackVisible                      = false;                     // true: Tracking Visible
    mbControlForeground                 = false;                     // true: Foreground-Property set
    mbControlBackground                 = false;                     // true: Background-Property set
    mbAlwaysOnTop                       = false;                     // true: always visible for all others windows
    mbCompoundControl                   = false;                     // true: Composite Control => Listener...
    mbCompoundControlHasFocus           = false;                     // true: Composite Control has focus somewhere
    mbPaintDisabled                     = false;                     // true: Paint should not be executed
    mbAllResize                         = false;                     // true: Also sent ResizeEvents with 0,0
    mbInDispose                         = false;                     // true: We're still in Window::dispose()
    mbExtTextInput                      = false;                     // true: ExtTextInput-Mode is active
    mbInFocusHdl                        = false;                     // true: Within GetFocus-Handler
    mbCreatedWithToolkit                = false;
    mbSuppressAccessibilityEvents       = false;                     // true: do not send any accessibility events
    mbDrawSelectionBackground           = false;                     // true: draws transparent window background to indicate (toolbox) selection
    mbIsInTaskPaneList                  = false;                     // true: window was added to the taskpanelist in the topmost system window
    mnNativeBackground                  = ControlPart::NONE;         // initialize later, depends on type
    mbHelpTextDynamic                   = false;                     // true: append help id in HELP_DEBUG case
    mbFakeFocusSet                      = false;                     // true: pretend as if the window has focus.
    mbHexpand                           = false;
    mbVexpand                           = false;
    mbExpand                            = false;
    mbFill                              = true;
    mbSecondary                         = false;
    mbNonHomogeneous                    = false;
    static bool bDoubleBuffer = getenv("VCL_DOUBLEBUFFERING_FORCE_ENABLE");
    mbDoubleBufferingRequested = bDoubleBuffer; // when we are not sure, assume it cannot do double-buffering via RenderContext
    mpLOKNotifier                       = nullptr;
    mnLOKWindowId                       = 0;
    mbUseFrameData                      = false;
}

WindowImpl::~WindowImpl()
{
    mpChildClipRegion.reset();
    mpAccessibleInfos.reset();
}

ImplWinData::ImplWinData() :
    mnCursorExtWidth(0),
    mbVertical(false),
    mnCompositionCharRects(0),
    mnTrackFlags(ShowTrackFlags::NONE),
    mnIsTopWindow(sal_uInt16(~0)), // not initialized yet, 0/1 will indicate TopWindow (see IsTopWindow())
    mbMouseOver(false),
    mbEnableNativeWidget(false)
{
}

ImplWinData::~ImplWinData()
{
    mpCompositionCharRects.reset();
}

ImplFrameData::ImplFrameData( vcl::Window *pWindow )
    : maPaintIdle( "vcl::Window maPaintIdle" ),
      maResizeIdle( "vcl::Window maResizeIdle" )
{
    ImplSVData* pSVData = ImplGetSVData();
    assert (pSVData->maFrameData.mpFirstFrame.get() != pWindow);
    mpNextFrame        = pSVData->maFrameData.mpFirstFrame;
    pSVData->maFrameData.mpFirstFrame = pWindow;
    mpFirstOverlap     = nullptr;
    mpFocusWin         = nullptr;
    mpMouseMoveWin     = nullptr;
    mpMouseDownWin     = nullptr;
    mpTrackWin         = nullptr;
    mxFontCollection   = pSVData->maGDIData.mxScreenFontList;
    mxFontCache        = pSVData->maGDIData.mxScreenFontCache;
    mnFocusId          = nullptr;
    mnMouseMoveId      = nullptr;
    mnLastMouseX       = -32767;
    mnLastMouseY       = -32767;
    mnBeforeLastMouseX = -32767;
    mnBeforeLastMouseY = -32767;
    mnFirstMouseX      = -32767;
    mnFirstMouseY      = -32767;
    mnLastMouseWinX    = -32767;
    mnLastMouseWinY    = -32767;
    mnModalMode        = 0;
    mnMouseDownTime    = 0;
    mnClickCount       = 0;
    mnFirstMouseCode   = 0;
    mnMouseCode        = 0;
    mnMouseMode        = MouseEventModifiers::NONE;
    mbHasFocus         = false;
    mbInMouseMove      = false;
    mbMouseIn          = false;
    mbStartDragCalled  = false;
    mbNeedSysWindow    = false;
    mbMinimized        = false;
    mbStartFocusState  = false;
    mbInSysObjFocusHdl = false;
    mbInSysObjToTopHdl = false;
    mbSysObjFocus      = false;
    maPaintIdle.SetPriority( TaskPriority::REPAINT );
    maPaintIdle.SetInvokeHandler( LINK( pWindow, vcl::Window, ImplHandlePaintHdl ) );
    maResizeIdle.SetPriority( TaskPriority::RESIZE );
    maResizeIdle.SetInvokeHandler( LINK( pWindow, vcl::Window, ImplHandleResizeTimerHdl ) );
    mbInternalDragGestureRecognizer = false;
    mbDragging = false;
    mbInBufferedPaint = false;
    mnDPIX = 96;
    mnDPIY = 96;
    mnTouchPanPositionX = -1;
    mnTouchPanPositionY = -1;
}

namespace vcl {

bool WindowOutputDevice::AcquireGraphics() const
{
    DBG_TESTSOLARMUTEX();

    if (isDisposed())
        return false;

    if (mpGraphics)
        return true;

    mbInitLineColor     = true;
    mbInitFillColor     = true;
    mbInitFont          = true;
    mbInitTextColor     = true;
    mbInitClipRegion    = true;

    ImplSVData* pSVData = ImplGetSVData();

    mpGraphics = mxOwnerWindow->mpWindowImpl->mpFrame->AcquireGraphics();
    // try harder if no wingraphics was available directly
    if ( !mpGraphics )
    {
        // find another output device in the same frame
        vcl::WindowOutputDevice* pReleaseOutDev = pSVData->maGDIData.mpLastWinGraphics.get();
        while ( pReleaseOutDev )
        {
            if ( pReleaseOutDev->mxOwnerWindow && pReleaseOutDev->mxOwnerWindow->mpWindowImpl->mpFrame == mxOwnerWindow->mpWindowImpl->mpFrame )
                break;
            pReleaseOutDev = static_cast<vcl::WindowOutputDevice*>(pReleaseOutDev->mpPrevGraphics.get());
        }

        if ( pReleaseOutDev )
        {
            // steal the wingraphics from the other outdev
            mpGraphics = pReleaseOutDev->mpGraphics;
            pReleaseOutDev->ReleaseGraphics( false );
        }
        else
        {
            // if needed retry after releasing least recently used wingraphics
            while ( !mpGraphics )
            {
                if ( !pSVData->maGDIData.mpLastWinGraphics )
                    break;
                pSVData->maGDIData.mpLastWinGraphics->ReleaseGraphics();
                mpGraphics = mxOwnerWindow->mpWindowImpl->mpFrame->AcquireGraphics();
            }
        }
    }

    if ( mpGraphics )
    {
        // update global LRU list of wingraphics
        mpNextGraphics = pSVData->maGDIData.mpFirstWinGraphics.get();
        pSVData->maGDIData.mpFirstWinGraphics = const_cast<vcl::WindowOutputDevice*>(this);
        if ( mpNextGraphics )
            mpNextGraphics->mpPrevGraphics = const_cast<vcl::WindowOutputDevice*>(this);
        if ( !pSVData->maGDIData.mpLastWinGraphics )
            pSVData->maGDIData.mpLastWinGraphics = const_cast<vcl::WindowOutputDevice*>(this);

        mpGraphics->SetXORMode( (RasterOp::Invert == meRasterOp) || (RasterOp::Xor == meRasterOp), RasterOp::Invert == meRasterOp );
        mpGraphics->setAntiAlias(bool(mnAntialiasing & AntialiasingFlags::Enable));
    }

    return mpGraphics != nullptr;
}

void WindowOutputDevice::ReleaseGraphics( bool bRelease )
{
    DBG_TESTSOLARMUTEX();

    if ( !mpGraphics )
        return;

    // release the fonts of the physically released graphics device
    if( bRelease )
        ImplReleaseFonts();

    ImplSVData* pSVData = ImplGetSVData();

    vcl::Window* pWindow = mxOwnerWindow.get();
    if (!pWindow)
        return;

    if ( bRelease )
        pWindow->mpWindowImpl->mpFrame->ReleaseGraphics( mpGraphics );
    // remove from global LRU list of window graphics
    if ( mpPrevGraphics )
        mpPrevGraphics->mpNextGraphics = mpNextGraphics;
    else
        pSVData->maGDIData.mpFirstWinGraphics = static_cast<vcl::WindowOutputDevice*>(mpNextGraphics.get());
    if ( mpNextGraphics )
        mpNextGraphics->mpPrevGraphics = mpPrevGraphics;
    else
        pSVData->maGDIData.mpLastWinGraphics = static_cast<vcl::WindowOutputDevice*>(mpPrevGraphics.get());

    mpGraphics      = nullptr;
    mpPrevGraphics  = nullptr;
    mpNextGraphics  = nullptr;
}

static sal_Int32 CountDPIScaleFactor(sal_Int32 nDPI)
{
#ifndef MACOSX
    // Setting of HiDPI is unfortunately all only a heuristic; and to add
    // insult to an injury, the system is constantly lying to us about
    // the DPI and whatnot
    // eg. fdo#77059 - set the value from which we do consider the
    // screen HiDPI to greater than 168
    if (nDPI > 216)      // 96 * 2   + 96 / 4
        return 250;
    else if (nDPI > 168) // 96 * 2   - 96 / 4
        return 200;
    else if (nDPI > 120) // 96 * 1.5 - 96 / 4
        return 150;
#else
    (void)nDPI;
#endif

    return 100;
}

void Window::ImplInit( vcl::Window* pParent, WinBits nStyle, SystemParentData* pSystemParentData )
{
    SAL_WARN_IF( !mpWindowImpl->mbFrame && !pParent && GetType() != WindowType::FIXEDIMAGE, "vcl.window",
        "Window::Window(): pParent == NULL" );

    ImplSVData* pSVData = ImplGetSVData();
    vcl::Window*     pRealParent = pParent;

    // inherit 3D look
    if ( !mpWindowImpl->mbOverlapWin && pParent && (pParent->GetStyle() & WB_3DLOOK) )
        nStyle |= WB_3DLOOK;

    // create border window if necessary
    if ( !mpWindowImpl->mbFrame && !mpWindowImpl->mbBorderWin && !mpWindowImpl->mpBorderWindow
         && (nStyle & (WB_BORDER | WB_SYSTEMCHILDWINDOW) ) )
    {
        BorderWindowStyle nBorderTypeStyle = BorderWindowStyle::NONE;
        if( nStyle & WB_SYSTEMCHILDWINDOW )
        {
            // handle WB_SYSTEMCHILDWINDOW
            // these should be analogous to a top level frame; meaning they
            // should have a border window with style BorderWindowStyle::Frame
            // which controls their size
            nBorderTypeStyle |= BorderWindowStyle::Frame;
            nStyle |= WB_BORDER;
        }
        VclPtrInstance<ImplBorderWindow> pBorderWin( pParent, nStyle & (WB_BORDER | WB_DIALOGCONTROL | WB_NODIALOGCONTROL), nBorderTypeStyle );
        static_cast<vcl::Window*>(pBorderWin)->mpWindowImpl->mpClientWindow = this;
        pBorderWin->GetBorder( mpWindowImpl->mnLeftBorder, mpWindowImpl->mnTopBorder, mpWindowImpl->mnRightBorder, mpWindowImpl->mnBottomBorder );
        mpWindowImpl->mpBorderWindow  = pBorderWin;
        pParent = mpWindowImpl->mpBorderWindow;
    }
    else if( !mpWindowImpl->mbFrame && ! pParent )
    {
        mpWindowImpl->mbOverlapWin  = true;
        mpWindowImpl->mbFrame = true;
    }

    // insert window in list
    ImplInsertWindow( pParent );
    mpWindowImpl->mnStyle = nStyle;

    if( pParent && ! mpWindowImpl->mbFrame )
        mpWindowImpl->mxOutDev->mbEnableRTL = AllSettings::GetLayoutRTL();

    // test for frame creation
    if ( mpWindowImpl->mbFrame )
    {
        // create frame
        SalFrameStyleFlags nFrameStyle = SalFrameStyleFlags::NONE;

        if ( nStyle & WB_MOVEABLE )
            nFrameStyle |= SalFrameStyleFlags::MOVEABLE;
        if ( nStyle & WB_SIZEABLE )
            nFrameStyle |= SalFrameStyleFlags::SIZEABLE;
        if ( nStyle & WB_CLOSEABLE )
            nFrameStyle |= SalFrameStyleFlags::CLOSEABLE;
        if ( nStyle & WB_APP )
            nFrameStyle |= SalFrameStyleFlags::DEFAULT;
        // check for undecorated floating window
        if( // 1. floating windows that are not moveable/sizeable (only closeable allowed)
            ( !(nFrameStyle & ~SalFrameStyleFlags::CLOSEABLE) &&
            ( mpWindowImpl->mbFloatWin || ((GetType() == WindowType::BORDERWINDOW) && static_cast<ImplBorderWindow*>(this)->mbFloatWindow) || (nStyle & WB_SYSTEMFLOATWIN) ) ) ||
            // 2. borderwindows of floaters with ownerdraw decoration
            ((GetType() == WindowType::BORDERWINDOW) && static_cast<ImplBorderWindow*>(this)->mbFloatWindow && (nStyle & WB_OWNERDRAWDECORATION) ) )
        {
            nFrameStyle = SalFrameStyleFlags::FLOAT;
            if( nStyle & WB_OWNERDRAWDECORATION )
                nFrameStyle |= SalFrameStyleFlags::OWNERDRAWDECORATION | SalFrameStyleFlags::NOSHADOW;
        }
        else if( mpWindowImpl->mbFloatWin )
            nFrameStyle |= SalFrameStyleFlags::TOOLWINDOW;

        if( nStyle & WB_INTROWIN )
            nFrameStyle |= SalFrameStyleFlags::INTRO;
        if( nStyle & WB_TOOLTIPWIN )
            nFrameStyle |= SalFrameStyleFlags::TOOLTIP;

        if( nStyle & WB_NOSHADOW )
            nFrameStyle |= SalFrameStyleFlags::NOSHADOW;

        if( nStyle & WB_SYSTEMCHILDWINDOW )
            nFrameStyle |= SalFrameStyleFlags::SYSTEMCHILD;

        switch (mpWindowImpl->meType)
        {
            case WindowType::DIALOG:
            case WindowType::TABDIALOG:
            case WindowType::MODELESSDIALOG:
            case WindowType::MESSBOX:
            case WindowType::INFOBOX:
            case WindowType::WARNINGBOX:
            case WindowType::ERRORBOX:
            case WindowType::QUERYBOX:
                nFrameStyle |= SalFrameStyleFlags::DIALOG;
                break;
            default:
                break;
        }

        // tdf#144624 for the DefaultWindow, which is never visible, don't
        // create an icon for it so construction of a DefaultWindow cannot
        // trigger creation of a VirtualDevice which itself requires a
        // DefaultWindow to exist
        if( nStyle & WB_DEFAULTWIN )
            nFrameStyle |= SalFrameStyleFlags::NOICON;

        SalFrame* pParentFrame = nullptr;
        if ( pParent )
            pParentFrame = pParent->mpWindowImpl->mpFrame;
        SalFrame* pFrame;
        if ( pSystemParentData )
            pFrame = pSVData->mpDefInst->CreateChildFrame( pSystemParentData, nFrameStyle | SalFrameStyleFlags::PLUG );
        else
            pFrame = pSVData->mpDefInst->CreateFrame( pParentFrame, nFrameStyle );
        if ( !pFrame )
        {
            // do not abort but throw an exception, may be the current thread terminates anyway (plugin-scenario)
            throw RuntimeException(
                u"Could not create system window!"_ustr,
                Reference< XInterface >() );
        }

        pFrame->SetCallback( this, ImplWindowFrameProc );

        // set window frame data
        mpWindowImpl->mpFrameData     = new ImplFrameData( this );
        mpWindowImpl->mpFrame         = pFrame;
        mpWindowImpl->mpFrameWindow   = this;
        mpWindowImpl->mpOverlapWindow = this;

        if (!(nStyle & WB_DEFAULTWIN) && mpWindowImpl->mbDoubleBufferingRequested)
            RequestDoubleBuffering(true);

        if ( pRealParent && IsTopWindow() )
        {
            ImplWinData* pParentWinData = pRealParent->ImplGetWinData();
            pParentWinData->maTopWindowChildren.emplace_back(this );
        }
    }

    // init data
    mpWindowImpl->mpRealParent = pRealParent;

    // #99318: make sure fontcache and list is available before call to SetSettings
    mpWindowImpl->mxOutDev->mxFontCollection = mpWindowImpl->mpFrameData->mxFontCollection;
    mpWindowImpl->mxOutDev->mxFontCache = mpWindowImpl->mpFrameData->mxFontCache;

    if ( mpWindowImpl->mbFrame )
    {
        if ( pParent )
        {
            mpWindowImpl->mpFrameData->mnDPIX     = pParent->mpWindowImpl->mpFrameData->mnDPIX;
            mpWindowImpl->mpFrameData->mnDPIY     = pParent->mpWindowImpl->mpFrameData->mnDPIY;
        }
        else
        {
            if (auto* pGraphics = GetOutDev()->GetGraphics())
            {
                pGraphics->GetResolution(mpWindowImpl->mpFrameData->mnDPIX,
                                         mpWindowImpl->mpFrameData->mnDPIY);
            }
        }

        // add ownerdraw decorated frame windows to list in the top-most frame window
        // so they can be hidden on lose focus
        if( nStyle & WB_OWNERDRAWDECORATION )
            ImplGetOwnerDrawList().emplace_back(this );

        // delay settings initialization until first "real" frame
        // this relies on the IntroWindow not needing any system settings
        if ( !pSVData->maAppData.mbSettingsInit &&
             ! (nStyle & (WB_INTROWIN|WB_DEFAULTWIN))
             )
        {
            // side effect: ImplUpdateGlobalSettings does an ImplGetFrame()->UpdateSettings
            ImplUpdateGlobalSettings( *pSVData->maAppData.mxSettings );
            mpWindowImpl->mxOutDev->SetSettings( *pSVData->maAppData.mxSettings );
            pSVData->maAppData.mbSettingsInit = true;
        }

        // If we create a Window with default size, query this
        // size directly, because we want resize all Controls to
        // the correct size before we display the window
        if ( nStyle & (WB_MOVEABLE | WB_SIZEABLE | WB_APP) )
            mpWindowImpl->mpFrame->GetClientSize( mpWindowImpl->mxOutDev->mnOutWidth, mpWindowImpl->mxOutDev->mnOutHeight );
    }
    else
    {
        if ( pParent )
        {
            if ( !ImplIsOverlapWindow() )
            {
                mpWindowImpl->mbDisabled          = pParent->mpWindowImpl->mbDisabled;
                mpWindowImpl->mbInputDisabled     = pParent->mpWindowImpl->mbInputDisabled;
                mpWindowImpl->meAlwaysInputMode   = pParent->mpWindowImpl->meAlwaysInputMode;
            }

            if (!comphelper::IsFuzzing())
            {
                // we don't want to call the WindowOutputDevice override of this because
                // it calls back into us.
                mpWindowImpl->mxOutDev->OutputDevice::SetSettings( pParent->GetSettings() );
            }
        }

    }

    // setup the scale factor for HiDPI displays
    mpWindowImpl->mxOutDev->mnDPIScalePercentage = CountDPIScaleFactor(mpWindowImpl->mpFrameData->mnDPIY);
    mpWindowImpl->mxOutDev->mnDPIX = mpWindowImpl->mpFrameData->mnDPIX;
    mpWindowImpl->mxOutDev->mnDPIY = mpWindowImpl->mpFrameData->mnDPIY;

    if (!comphelper::IsFuzzing())
    {
        const StyleSettings& rStyleSettings = mpWindowImpl->mxOutDev->moSettings->GetStyleSettings();
        mpWindowImpl->mxOutDev->maFont = rStyleSettings.GetAppFont();

        if ( nStyle & WB_3DLOOK )
        {
            SetTextColor( rStyleSettings.GetButtonTextColor() );
            SetBackground( Wallpaper( rStyleSettings.GetFaceColor() ) );
        }
        else
        {
            SetTextColor( rStyleSettings.GetWindowTextColor() );
            SetBackground( Wallpaper( rStyleSettings.GetWindowColor() ) );
        }
    }
    else
    {
        mpWindowImpl->mxOutDev->maFont = OutputDevice::GetDefaultFont( DefaultFontType::FIXED, LANGUAGE_ENGLISH_US, GetDefaultFontFlags::NONE );
    }

    ImplPointToLogic(*GetOutDev(), mpWindowImpl->mxOutDev->maFont);

    (void)ImplUpdatePos();

    // calculate app font res (except for the Intro Window or the default window)
    if ( mpWindowImpl->mbFrame && !pSVData->maGDIData.mnAppFontX && ! (nStyle & (WB_INTROWIN|WB_DEFAULTWIN)) )
        ImplInitAppFontData( this );
}

void Window::ImplInitAppFontData( vcl::Window const * pWindow )
{
    ImplSVData* pSVData = ImplGetSVData();
    tools::Long nTextHeight = pWindow->GetTextHeight();
    tools::Long nTextWidth = pWindow->approximate_char_width() * 8;
    tools::Long nSymHeight = nTextHeight*4;
    // Make the basis wider if the font is too narrow
    // such that the dialog looks symmetrical and does not become too narrow.
    // Add some extra space when the dialog has the same width,
    // as a little more space is better.
    if ( nSymHeight > nTextWidth )
        nTextWidth = nSymHeight;
    else if ( nSymHeight+5 > nTextWidth )
        nTextWidth = nSymHeight+5;
    pSVData->maGDIData.mnAppFontX = nTextWidth * 10 / 8;
    pSVData->maGDIData.mnAppFontY = nTextHeight * 10;

#ifdef MACOSX
    // FIXME: this is currently only on macOS, check with other
    // platforms
    if( pSVData->maNWFData.mbNoFocusRects )
    {
        // try to find out whether there is a large correction
        // of control sizes, if yes, make app font scalings larger
        // so dialog positioning is not completely off
        ImplControlValue aControlValue;
        tools::Rectangle aCtrlRegion( Point(), Size( nTextWidth < 10 ? 10 : nTextWidth, nTextHeight < 10 ? 10 : nTextHeight ) );
        tools::Rectangle aBoundingRgn( aCtrlRegion );
        tools::Rectangle aContentRgn( aCtrlRegion );
        if( pWindow->GetNativeControlRegion( ControlType::Editbox, ControlPart::Entire, aCtrlRegion,
                                             ControlState::ENABLED, aControlValue,
                                             aBoundingRgn, aContentRgn ) )
        {
            // comment: the magical +6 is for the extra border in bordered
            // (which is the standard) edit fields
            if( aContentRgn.GetHeight() - nTextHeight > (nTextHeight+4)/4 )
                pSVData->maGDIData.mnAppFontY = (aContentRgn.GetHeight()-4) * 10;
        }
    }
#endif
}

ImplWinData* Window::ImplGetWinData() const
{
    if (!mpWindowImpl->mpWinData)
    {
        static const char* pNoNWF = getenv( "SAL_NO_NWF" );

        const_cast<vcl::Window*>(this)->mpWindowImpl->mpWinData.reset(new ImplWinData);
        mpWindowImpl->mpWinData->mbEnableNativeWidget = !(pNoNWF && *pNoNWF); // true: try to draw this control with native theme API
    }

    return mpWindowImpl->mpWinData.get();
}


void WindowOutputDevice::CopyDeviceArea( SalTwoRect& aPosAry, bool bWindowInvalidate )
{
    if (aPosAry.mnSrcWidth == 0 || aPosAry.mnSrcHeight == 0 || aPosAry.mnDestWidth == 0 || aPosAry.mnDestHeight == 0)
        return;

    if (bWindowInvalidate)
    {
        const tools::Rectangle aSrcRect(Point(aPosAry.mnSrcX, aPosAry.mnSrcY),
                Size(aPosAry.mnSrcWidth, aPosAry.mnSrcHeight));

        mxOwnerWindow->ImplMoveAllInvalidateRegions(aSrcRect,
                aPosAry.mnDestX-aPosAry.mnSrcX,
                aPosAry.mnDestY-aPosAry.mnSrcY,
                false);

        mpGraphics->CopyArea(aPosAry.mnDestX, aPosAry.mnDestY,
                aPosAry.mnSrcX, aPosAry.mnSrcY,
                aPosAry.mnSrcWidth, aPosAry.mnSrcHeight,
                *this);

        return;
    }

    OutputDevice::CopyDeviceArea(aPosAry, bWindowInvalidate);
}

const OutputDevice* WindowOutputDevice::DrawOutDevDirectCheck(const OutputDevice&&nbsp;rSrcDev) const
{
    const OutputDevice* pSrcDevChecked;
    if ( this == &rSrcDev )
        pSrcDevChecked = nullptr;
    else if (GetOutDevType() != rSrcDev.GetOutDevType())
        pSrcDevChecked = &rSrcDev;
    else if (mxOwnerWindow->mpWindowImpl->mpFrameWindow == static_cast<const vcl::WindowOutputDevice&>(rSrcDev).mxOwnerWindow->mpWindowImpl->mpFrameWindow)
        pSrcDevChecked = nullptr;
    else
        pSrcDevChecked = &rSrcDev;

    return pSrcDevChecked;
}

void WindowOutputDevice::DrawOutDevDirectProcess( const OutputDevice& rSrcDev, SalTwoRect& rPosAry, SalGraphics* pSrcGraphics )
{
    if (pSrcGraphics)
        mpGraphics->CopyBits(rPosAry, *pSrcGraphics, *this, rSrcDev);
    else
        mpGraphics->CopyBits(rPosAry, *this);
}

SalGraphics* Window::ImplGetFrameGraphics() const
{
    if ( mpWindowImpl->mpFrameWindow->GetOutDev()->mpGraphics )
    {
        mpWindowImpl->mpFrameWindow->GetOutDev()->mbInitClipRegion = true;
    }
    else
    {
        OutputDevice* pFrameWinOutDev = mpWindowImpl->mpFrameWindow->GetOutDev();
        if ( ! pFrameWinOutDev->AcquireGraphics() )
        {
            return nullptr;
        }
    }
    mpWindowImpl->mpFrameWindow->GetOutDev()->mpGraphics->ResetClipRegion();
    return mpWindowImpl->mpFrameWindow->GetOutDev()->mpGraphics;
}

void Window::ImplSetReallyVisible()
{
    // #i43594# it is possible that INITSHOW was never send, because the visibility state changed between
    // ImplCallInitShow() and ImplSetReallyVisible() when called from Show()
    // mbReallyShown is a useful indicator
    if( !mpWindowImpl->mbReallyShown )
        ImplCallInitShow();

    bool bBecameReallyVisible = !mpWindowImpl->mbReallyVisible;

    GetOutDev()->mbDevOutput     = true;
    mpWindowImpl->mbReallyVisible = true;
    mpWindowImpl->mbReallyShown   = true;

    // the SHOW/HIDE events serve as indicators to send child creation/destroy events to the access bridge.
    // For this, the data member of the event must not be NULL.
    // Previously, we did this in Window::Show, but there some events got lost in certain situations. Now
    // we're doing it when the visibility really changes
    if( bBecameReallyVisible && ImplIsAccessibleCandidate() )
        CallEventListeners( VclEventId::WindowShow, this );
        // TODO. It's kind of a hack that we're re-using the VclEventId::WindowShow. Normally, we should
        // introduce another event which explicitly triggers the Accessibility implementations.

    vcl::Window* pWindow = mpWindowImpl->mpFirstOverlap;
    while ( pWindow )
    {
        if ( pWindow->mpWindowImpl->mbVisible )
            pWindow->ImplSetReallyVisible();
        pWindow = pWindow->mpWindowImpl->mpNext;
    }

    pWindow = mpWindowImpl->mpFirstChild;
    while ( pWindow )
    {
        if ( pWindow->mpWindowImpl->mbVisible )
            pWindow->ImplSetReallyVisible();
        pWindow = pWindow->mpWindowImpl->mpNext;
    }
}

void Window::ImplInitResolutionSettings()
{
    // recalculate AppFont-resolution and DPI-resolution
    if (mpWindowImpl->mbFrame)
    {
        GetOutDev()->mnDPIX = mpWindowImpl->mpFrameData->mnDPIX;
        GetOutDev()->mnDPIY = mpWindowImpl->mpFrameData->mnDPIY;

        // setup the scale factor for HiDPI displays
        GetOutDev()->mnDPIScalePercentage = CountDPIScaleFactor(mpWindowImpl->mpFrameData->mnDPIY);
        const StyleSettings& rStyleSettings = GetOutDev()->moSettings->GetStyleSettings();
        SetPointFont(*GetOutDev(), rStyleSettings.GetAppFont());
    }
    else if ( mpWindowImpl->mpParent )
    {
        GetOutDev()->mnDPIX  = mpWindowImpl->mpParent->GetOutDev()->mnDPIX;
        GetOutDev()->mnDPIY  = mpWindowImpl->mpParent->GetOutDev()->mnDPIY;
        GetOutDev()->mnDPIScalePercentage = mpWindowImpl->mpParent->GetOutDev()->mnDPIScalePercentage;
    }

    // update the recalculated values for logical units
    // and also tools belonging to the values
    if (IsMapModeEnabled())
    {
        MapMode aMapMode = GetMapMode();
        SetMapMode();
        SetMapMode( aMapMode );
    }
}

void Window::ImplPointToLogic(vcl::RenderContext const & rRenderContext, vcl::Font& rFont,
                            bool bUseRenderContextDPI) const
{
    Size aSize = rFont.GetFontSize();

    if (aSize.Width())
    {
        aSize.setWidth( aSize.Width() *
            ( bUseRenderContextDPI ? rRenderContext.GetDPIX() : mpWindowImpl->mpFrameData->mnDPIX) );
        aSize.AdjustWidth(72 / 2 );
        aSize.setWidth( aSize.Width() / 72 );
    }
    aSize.setHeight( aSize.Height()
        * ( bUseRenderContextDPI ? rRenderContext.GetDPIY() : mpWindowImpl->mpFrameData->mnDPIY) );
    aSize.AdjustHeight(72/2 );
    aSize.setHeight( aSize.Height() / 72 );

    aSize = rRenderContext.PixelToLogic(aSize);

    rFont.SetFontSize(aSize);
}

void Window::ImplLogicToPoint(vcl::RenderContext const & rRenderContext, vcl::Font& rFont) const
{
    Size aSize = rFont.GetFontSize();
    aSize = rRenderContext.LogicToPixel(aSize);

    if (aSize.Width())
    {
        aSize.setWidth( aSize.Width() * 72 );
        aSize.AdjustWidth(mpWindowImpl->mpFrameData->mnDPIX / 2 );
        aSize.setWidth( aSize.Width() / ( mpWindowImpl->mpFrameData->mnDPIX) );
    }
    aSize.setHeight( aSize.Height() * 72 );
    aSize.AdjustHeight(mpWindowImpl->mpFrameData->mnDPIY / 2 );
    aSize.setHeight( aSize.Height() / ( mpWindowImpl->mpFrameData->mnDPIY) );

    rFont.SetFontSize(aSize);
}

bool Window::ImplUpdatePos()
{
    bool bSysChild = false;

    if ( ImplIsOverlapWindow() )
    {
        GetOutDev()->mnOutOffX  = mpWindowImpl->mnX;
        GetOutDev()->mnOutOffY  = mpWindowImpl->mnY;
    }
    else
    {
        vcl::Window* pParent = ImplGetParent();

        GetOutDev()->mnOutOffX  = mpWindowImpl->mnX + pParent->GetOutDev()->mnOutOffX;
        GetOutDev()->mnOutOffY  = mpWindowImpl->mnY + pParent->GetOutDev()->mnOutOffY;
    }

    VclPtr< vcl::Window > pChild = mpWindowImpl->mpFirstChild;
    while ( pChild )
    {
        if ( pChild->ImplUpdatePos() )
            bSysChild = true;
        pChild = pChild->mpWindowImpl->mpNext;
    }

    if ( mpWindowImpl->mpSysObj )
        bSysChild = true;

    return bSysChild;
}

void Window::ImplUpdateSysObjPos()
{
    if ( mpWindowImpl->mpSysObj )
        mpWindowImpl->mpSysObj->SetPosSize( GetOutDev()->mnOutOffX, GetOutDev()->mnOutOffY, GetOutDev()->mnOutWidth, GetOutDev()->mnOutHeight );

    VclPtr< vcl::Window > pChild = mpWindowImpl->mpFirstChild;
    while ( pChild )
    {
        pChild->ImplUpdateSysObjPos();
        pChild = pChild->mpWindowImpl->mpNext;
    }
}

void Window::ImplPosSizeWindow( tools::Long nX, tools::Long nY,
                                tools::Long nWidth, tools::Long nHeight, PosSizeFlags nFlags )
{
    bool    bNewPos         = false;
    bool    bNewSize        = false;
    bool    bCopyBits       = false;
    tools::Long    nOldOutOffX     = GetOutDev()->mnOutOffX;
    tools::Long    nOldOutOffY     = GetOutDev()->mnOutOffY;
    tools::Long    nOldOutWidth    = GetOutDev()->mnOutWidth;
    tools::Long    nOldOutHeight   = GetOutDev()->mnOutHeight;
    std::unique_ptr<vcl::Region> pOverlapRegion;
    std::unique_ptr<vcl::Region> pOldRegion;

    if ( IsReallyVisible() )
    {
        tools::Rectangle aOldWinRect( Point( nOldOutOffX, nOldOutOffY ),
                               Size( nOldOutWidth, nOldOutHeight ) );
        pOldRegion.reset( new vcl::Region( aOldWinRect ) );
        if ( mpWindowImpl->mbWinRegion )
            pOldRegion->Intersect( GetOutDev()->ImplPixelToDevicePixel( mpWindowImpl->maWinRegion ) );

        if ( GetOutDev()->mnOutWidth && GetOutDev()->mnOutHeight && !mpWindowImpl->mbPaintTransparent &&
             !mpWindowImpl->mbInitWinClipRegion && !mpWindowImpl->maWinClipRegion.IsEmpty() &&
             !HasPaintEvent() )
            bCopyBits = true;
    }

    bool bnXRecycled = false; // avoid duplicate mirroring in RTL case
    if ( nFlags & PosSizeFlags::Width )
    {
        if(!( nFlags & PosSizeFlags::X ))
        {
            nX = mpWindowImpl->mnX;
            nFlags |= PosSizeFlags::X;
            bnXRecycled = true; // we're using a mnX which was already mirrored in RTL case
        }

        if ( nWidth < 0 )
            nWidth = 0;
        if ( nWidth != GetOutDev()->mnOutWidth )
        {
            GetOutDev()->mnOutWidth = nWidth;
            bNewSize = true;
            bCopyBits = false;
        }
    }
    if ( nFlags & PosSizeFlags::Height )
    {
        if ( nHeight < 0 )
            nHeight = 0;
        if ( nHeight != GetOutDev()->mnOutHeight )
        {
            GetOutDev()->mnOutHeight = nHeight;
            bNewSize = true;
            bCopyBits = false;
        }
    }

    if ( nFlags & PosSizeFlags::X )
    {
        tools::Long nOrgX = nX;
        Point aPtDev( nX+GetOutDev()->mnOutOffX, 0 );
        OutputDevice *pOutDev = GetOutDev();
        if( pOutDev->HasMirroredGraphics() )
        {
            aPtDev.setX( GetOutDev()->mpGraphics->mirror2( aPtDev.X(), *GetOutDev() ) );

            // #106948# always mirror our pos if our parent is not mirroring, even
            // if we are also not mirroring
            // RTL: check if parent is in different coordinates
            if( !bnXRecycled && mpWindowImpl->mpParent && !mpWindowImpl->mpParent->mpWindowImpl->mbFrame && mpWindowImpl->mpParent->GetOutDev()->ImplIsAntiparallel() )
            {
                nX = mpWindowImpl->mpParent->GetOutDev()->mnOutWidth - GetOutDev()->mnOutWidth - nX;
            }
            /* #i99166# An LTR window in RTL UI that gets sized only would be
               expected to not moved its upper left point
            */
            if( bnXRecycled )
            {
                if( GetOutDev()->ImplIsAntiparallel() )
                {
                    aPtDev.setX( mpWindowImpl->mnAbsScreenX );
                    nOrgX = mpWindowImpl->maPos.X();
                }
            }
        }
        else if( !bnXRecycled && mpWindowImpl->mpParent && !mpWindowImpl->mpParent->mpWindowImpl->mbFrame && mpWindowImpl->mpParent->GetOutDev()->ImplIsAntiparallel() )
        {
            // mirrored window in LTR UI
            nX = mpWindowImpl->mpParent->GetOutDev()->mnOutWidth - GetOutDev()->mnOutWidth - nX;
        }

        // check maPos as well, as it could have been changed for client windows (ImplCallMove())
        if ( mpWindowImpl->mnAbsScreenX != aPtDev.X() || nX != mpWindowImpl->mnX || nOrgX != mpWindowImpl->maPos.X() )
        {
            if ( bCopyBits && !pOverlapRegion )
            {
                pOverlapRegion.reset( new vcl::Region() );
                ImplCalcOverlapRegion( GetOutputRectPixel(),
                                       *pOverlapRegion, false, true );
            }
--> --------------------

--> maximum size reached

--> --------------------