/* -*- 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 <pdfihelper.hxx>

#include <rtl/ustrbuf.hxx>

#include <basegfx/numeric/ftools.hxx>

#include <rtl/math.hxx>

#include <math.h>

using namespace pdfi;

using namespace com::sun::star;

double pdfi::GetAverageTransformationScale(const basegfx::B2DHomMatrix& matrix)

{

    double rotate, shearX;

    basegfx::B2DTuple scale, translation;

    matrix.decompose(scale, translation, rotate, shearX);

    return (fabs(scale.getX()) + fabs(scale.getY())) / 2.0;

}

void pdfi::FillDashStyleProps(PropertyMap& props, const std::vector<double>& dashArray, double scale)

{

    size_t pairCount = dashArray.size() / 2;

    double distance = 0.0;

    for (size_t i = 0; i < pairCount; i++)

        distance += dashArray[i * 2 + 1];

    distance /= pairCount;

    props[u"draw:style"_ustr] = "rect";

    props[u"draw:distance"_ustr] = convertPixelToUnitString(distance * scale);

    int dotStage = 0;

    int dotCounts[3] = {0, 0, 0};

    double dotLengths[3] = {0.0, 0.0, 0.0};

    for (size_t i = 0; i < pairCount; i++)

    {

        if (!rtl::math::approxEqual(dotLengths[dotStage], dashArray[i * 2]))

        {

            dotStage++;

            if (dotStage == 3)

                break;

            dotCounts[dotStage] = 1;

            dotLengths[dotStage] = dashArray[i * 2];

        }

        else

        {

            dotCounts[dotStage]++;

        }

    }

    for (int i = 1; i < 3; i++)

    {

        if (dotCounts[i] == 0)

            continue;

        props["draw:dots" + OUString::number(i)] = OUString::number(dotCounts[i]);

        props["draw:dots" + OUString::number(i) + "-length"] =

            convertPixelToUnitString(dotLengths[i] * scale);

    }

}

OUString pdfi::getColorString( const rendering::ARGBColor& rCol )

{

    OUStringBuffer aBuf( 7 );

    const sal_uInt8 nRed  ( sal::static_int_cast<sal_Int8>( basegfx::fround( rCol.Red * 255.0 ) ) );

    const sal_uInt8 nGreen( sal::static_int_cast<sal_Int8>( basegfx::fround( rCol.Green * 255.0 ) ) );

    const sal_uInt8 nBlue ( sal::static_int_cast<sal_Int8>( basegfx::fround( rCol.Blue * 255.0 ) ) );

    aBuf.append( '#' );

    if( nRed < 16 )

        aBuf.append( '0' );

    aBuf.append( sal_Int32(nRed), 16 );

    if( nGreen < 16 )

        aBuf.append( '0' );

    aBuf.append( sal_Int32(nGreen), 16 );

    if( nBlue < 16 )

        aBuf.append( '0' );

    aBuf.append( sal_Int32(nBlue), 16 );

    return aBuf.makeStringAndClear();

}

OUString pdfi::getPercentString(double value)

{

    return OUString::number(value) + "%";

}

OUString pdfi::unitMMString( double fMM )

{

    return OUString::number(rtl_math_round( fMM, 2, rtl_math_RoundingMode_Floor )) + "mm";

}

OUString pdfi::convertPixelToUnitString( double fPix )

{

    return OUString::number( rtl_math_round( convPx2mm( fPix ), 2, rtl_math_RoundingMode_Floor ) ) + "mm";

}

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