/* -*- 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 <i18nlangtag/languagetag.hxx>

#include <i18nlangtag/mslangid.hxx>

#include <vcl/event.hxx>

#include <vcl/svapp.hxx>

#include <vcl/window.hxx>

#include <vcl/settings.hxx>

#include <officecfg/Office/Common.hxx>

#include <unotools/configmgr.hxx>

#include <unotools/confignode.hxx>

#include <comphelper/processfactory.hxx>

#include <salframe.hxx>

#include <brdwin.hxx>

#include <window.h>

namespace vcl {

void WindowOutputDevice::SetSettings( const AllSettings& rSettings )

{

    SetSettings( rSettings, false );

}

void WindowOutputDevice::SetSettings( const AllSettings& rSettings, bool bChild )

{

    if ( auto pBorderWindow = mxOwnerWindow->mpWindowImpl->mpBorderWindow.get() )

    {

        static_cast<vcl::WindowOutputDevice*>(pBorderWindow->GetOutDev())->SetSettings( rSettings, false );

        if ( (pBorderWindow->GetType() == WindowType::BORDERWINDOW) &&

             static_cast<ImplBorderWindow*>(pBorderWindow)->mpMenuBarWindow )

            static_cast<vcl::WindowOutputDevice*>(static_cast<ImplBorderWindow*>(pBorderWindow)->mpMenuBarWindow->GetOutDev())->SetSettings( rSettings, true );

    }

    AllSettings aOldSettings(*moSettings);

    OutputDevice::SetSettings( rSettings );

    AllSettingsFlags nChangeFlags = aOldSettings.GetChangeFlags( rSettings );

    // recalculate AppFont-resolution and DPI-resolution

    mxOwnerWindow->ImplInitResolutionSettings();

    if ( bool(nChangeFlags) )

    {

        DataChangedEvent aDCEvt( DataChangedEventType::SETTINGS, &aOldSettings, nChangeFlags );

        mxOwnerWindow->DataChanged( aDCEvt );

    }

    if ( bChild )

    {

        vcl::Window* pChild = mxOwnerWindow->mpWindowImpl->mpFirstChild;

        while ( pChild )

        {

            static_cast<vcl::WindowOutputDevice*>(pChild->GetOutDev())->SetSettings( rSettings, bChild );

            pChild = pChild->mpWindowImpl->mpNext;

        }

    }

}

void Window::UpdateSettings( const AllSettings& rSettings, bool bChild )

{

    if ( mpWindowImpl->mpBorderWindow )

    {

        mpWindowImpl->mpBorderWindow->UpdateSettings( rSettings );

        if (mpWindowImpl->mpBorderWindow->GetType() == WindowType::BORDERWINDOW)

        {

            ImplBorderWindow* pImpl = static_cast<ImplBorderWindow*>(mpWindowImpl->mpBorderWindow.get());

            if (pImpl->mpMenuBarWindow)

                pImpl->mpMenuBarWindow->UpdateSettings(rSettings, true);

            if (pImpl->mpNotebookBar)

                pImpl->mpNotebookBar->UpdateSettings(rSettings, true);

        }

    }

    AllSettings aOldSettings(*mpWindowImpl->mxOutDev->moSettings);

    AllSettingsFlags nChangeFlags = mpWindowImpl->mxOutDev->moSettings->Update( AllSettings::GetWindowUpdate(), rSettings );

    // recalculate AppFont-resolution and DPI-resolution

    ImplInitResolutionSettings();

    /* #i73785#

    *  do not overwrite a WheelBehavior with false

    *  this looks kind of a hack, but WheelBehavior

    *  is always a local change, not a system property,

    *  so we can spare all our users the hassle of reacting on

    *  this in their respective DataChanged.

    */

    MouseSettings aSet( mpWindowImpl->mxOutDev->moSettings->GetMouseSettings() );

    aSet.SetWheelBehavior( aOldSettings.GetMouseSettings().GetWheelBehavior() );

    mpWindowImpl->mxOutDev->moSettings->SetMouseSettings( aSet );

    if( (nChangeFlags & AllSettingsFlags::STYLE) && IsBackground() )

    {

        Wallpaper aWallpaper = GetBackground();

        if( !aWallpaper.IsBitmap() && !aWallpaper.IsGradient() )

        {

            if ( mpWindowImpl->mnStyle & WB_3DLOOK )

            {

                if (aOldSettings.GetStyleSettings().GetFaceColor() != rSettings.GetStyleSettings().GetFaceColor())

                    SetBackground( Wallpaper( rSettings.GetStyleSettings().GetFaceColor() ) );

            }

            else

            {

                if (aOldSettings.GetStyleSettings().GetWindowColor() != rSettings.GetStyleSettings().GetWindowColor())

                    SetBackground( Wallpaper( rSettings.GetStyleSettings().GetWindowColor() ) );

            }

        }

    }

    if ( bool(nChangeFlags) )

    {

        DataChangedEvent aDCEvt( DataChangedEventType::SETTINGS, &aOldSettings, nChangeFlags );

        DataChanged( aDCEvt );

        // notify data change handler

        CallEventListeners( VclEventId::WindowDataChanged, &aDCEvt);

    }

    if ( bChild )

    {

        vcl::Window* pChild = mpWindowImpl->mpFirstChild;

        while ( pChild )

        {

            pChild->UpdateSettings( rSettings, bChild );

            pChild = pChild->mpWindowImpl->mpNext;

        }

    }

}

void Window::ImplUpdateGlobalSettings( AllSettings& rSettings, bool bCallHdl ) const

{

    StyleSettings aTmpSt( rSettings.GetStyleSettings() );

    aTmpSt.SetHighContrastMode( false );

    rSettings.SetStyleSettings( aTmpSt );

    ImplGetFrame()->UpdateSettings( rSettings );

    StyleSettings aStyleSettings = rSettings.GetStyleSettings();

    vcl::Font aFont = aStyleSettings.GetMenuFont();

    int defFontheight = aFont.GetFontHeight();

    // if the UI is korean, chinese or another locale

    // where the system font size is known to be often too small to

    // generate readable fonts enforce a minimum font size of 9 points

    bool bBrokenLangFontHeight = MsLangId::isCJK(Application::GetSettings().GetUILanguageTag().getLanguageType());

    if (bBrokenLangFontHeight)

        defFontheight = std::max(9, defFontheight);

    // i22098, toolfont will be scaled differently to avoid bloated rulers and status bars for big fonts

    int toolfontheight = defFontheight;

    if( toolfontheight > 9 )

        toolfontheight = (defFontheight+8) / 2;

    aFont = aStyleSettings.GetAppFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetAppFont( aFont );

    aFont = aStyleSettings.GetTitleFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetTitleFont( aFont );

    aFont = aStyleSettings.GetFloatTitleFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetFloatTitleFont( aFont );

    // keep menu and help font size from system unless in broken locale size

    if( bBrokenLangFontHeight )

    {

        aFont = aStyleSettings.GetMenuFont();

        if( aFont.GetFontHeight() < defFontheight )

        {

            aFont.SetFontHeight( defFontheight );

            aStyleSettings.SetMenuFont( aFont );

        }

        aFont = aStyleSettings.GetHelpFont();

        if( aFont.GetFontHeight() < defFontheight )

        {

            aFont.SetFontHeight( defFontheight );

            aStyleSettings.SetHelpFont( aFont );

        }

    }

    // use different height for toolfont

    aFont = aStyleSettings.GetToolFont();

    aFont.SetFontHeight( toolfontheight );

    aStyleSettings.SetToolFont( aFont );

    aFont = aStyleSettings.GetLabelFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetLabelFont( aFont );

    aFont = aStyleSettings.GetRadioCheckFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetRadioCheckFont( aFont );

    aFont = aStyleSettings.GetPushButtonFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetPushButtonFont( aFont );

    aFont = aStyleSettings.GetFieldFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetFieldFont( aFont );

    aFont = aStyleSettings.GetIconFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetIconFont( aFont );

    aFont = aStyleSettings.GetTabFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetTabFont( aFont );

    aFont = aStyleSettings.GetGroupFont();

    aFont.SetFontHeight( defFontheight );

    aStyleSettings.SetGroupFont( aFont );

    static const bool bFuzzing = comphelper::IsFuzzing();

    if (!bFuzzing)

    {

        static const char* pEnvHC = getenv( "SAL_FORCE_HC" );

        const bool bForceHCMode = pEnvHC && *pEnvHC;

        if (bForceHCMode)

            aStyleSettings.SetHighContrastMode( true );

        else

        {

            sal_Int32 nHighContrastMode = officecfg::Office::Common::Accessibility::HighContrast::get();

            if (nHighContrastMode != 0) // 0 Automatic, 1 Disable, 2 Enable

            {

                const bool bEnable = nHighContrastMode == 2;

                aStyleSettings.SetHighContrastMode(bEnable);

            }

        }

    }

    rSettings.SetStyleSettings( aStyleSettings );

    if ( bCallHdl )

        GetpApp()->OverrideSystemSettings( rSettings );

}

} /*namespace vcl*/

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