/* -*- 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 <svx/relfld.hxx>

#include <vcl/fieldvalues.hxx>

SvxRelativeField::SvxRelativeField(std::unique_ptr<weld::MetricSpinButton> pControl)

    : m_xSpinButton(std::move(pControl))

    , nRelMin(0)

    , nRelMax(0)

    , bRelativeMode(false)

    , bRelative(false)

    , bNegativeEnabled(false)

    , bFontRelativeMode(false)

{

    weld::SpinButton& rSpinButton = m_xSpinButton->get_widget();

    rSpinButton.connect_changed(LINK(this, SvxRelativeField, ModifyHdl));

}

IMPL_LINK_NOARG(SvxRelativeField, ModifyHdl, weld::Entry&, void)

{

    if (bRelativeMode)

    {

        OUString aStr = m_xSpinButton->get_text();

        bool bNewMode = bRelative;

        if (bRelative)

        {

            const sal_Unicode* pStr = aStr.getStr();

            while (*pStr)

            {

                if (((*pStr < '0') || (*pStr > '9')) && (*pStr != '%'))

                {

                    bNewMode = false;

                    break;

                }

                pStr++;

            }

        }

        else

        {

            if (aStr.indexOf("%") != -1)

                bNewMode = true;

        }

        if (bNewMode != bRelative)

            SetRelative(bNewMode);

    }

    if (bFontRelativeMode)

    {

        OUString aStr = m_xSpinButton->get_text();

        FieldUnit eNewFieldUnit = vcl::GetTextMetricUnit(aStr);

        // Only allow font-relative units

        switch (eNewFieldUnit)

        {

            default:

                eNewFieldUnit = FieldUnit::NONE;

                break;

            case FieldUnit::FONT_EM:

            case FieldUnit::FONT_CJK_ADVANCE:

                break;

        }

        if (eNewFieldUnit != eFontRelativeFieldUnit)

        {

            SetFontRelative(eNewFieldUnit);

        }

    }

}

void SvxRelativeField::EnableRelativeMode(sal_uInt16 nMin, sal_uInt16 nMax)

{

    bRelativeMode = true;

    nRelMin       = nMin;

    nRelMax       = nMax;

    m_xSpinButton->set_unit(FieldUnit::CM);

}

void SvxRelativeField::EnableFontRelativeMode() { bFontRelativeMode = true; }

void SvxRelativeField::SetRelative( bool bNewRelative )

{

    weld::SpinButton& rSpinButton = m_xSpinButton->get_widget();

    int nStartPos, nEndPos;

    rSpinButton.get_selection_bounds(nStartPos, nEndPos);

    OUString aStr = rSpinButton.get_text();

    eFontRelativeFieldUnit = FieldUnit::NONE;

    if ( bNewRelative )

    {

        bRelative = true;

        m_xSpinButton->set_digits(0);

        m_xSpinButton->set_range(nRelMin, nRelMax, FieldUnit::NONE);

        m_xSpinButton->set_unit(FieldUnit::PERCENT);

    }

    else

    {

        bRelative = false;

        m_xSpinButton->set_digits(2);

        m_xSpinButton->set_range(bNegativeEnabled ? -9999 : 0, 9999, FieldUnit::NONE);

        m_xSpinButton->set_unit(FieldUnit::CM);

    }

    rSpinButton.set_text(aStr);

    rSpinButton.select_region(nStartPos, nEndPos);

}

void SvxRelativeField::SetFontRelative(FieldUnit eNewRelativeUnit)

{

    weld::SpinButton& rSpinButton = m_xSpinButton->get_widget();

    int nStartPos, nEndPos;

    rSpinButton.get_selection_bounds(nStartPos, nEndPos);

    OUString aStr = rSpinButton.get_text();

    bRelative = false;

    eFontRelativeFieldUnit = eNewRelativeUnit;

    m_xSpinButton->set_digits(2);

    m_xSpinButton->set_range(bNegativeEnabled ? -9999 : 0, 9999, FieldUnit::NONE);

    if (eNewRelativeUnit == FieldUnit::NONE)

    {

        m_xSpinButton->set_unit(eAbsoluteFieldUnit);

    }

    else

    {

        m_xSpinButton->set_unit(eNewRelativeUnit);

    }

    rSpinButton.set_text(aStr);

    rSpinButton.select_region(nStartPos, nEndPos);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */