/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */

/*

 * 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 <com/sun/star/rendering/XCanvas.hpp>

#include <com/sun/star/rendering/StrokeAttributes.hpp>

#include <com/sun/star/rendering/PathJoinType.hpp>

#include <basegfx/polygon/b2dpolypolygontools.hxx>

#include <basegfx/utils/canvastools.hxx>

#include <outdevstate.hxx>

#include <utility>

#include "textlineshelper.hxx"

#include "mtftools.hxx"

using namespace ::com::sun::star;

namespace

{

void initLineStyleWaveline(sal_uInt32 nLineStyle, bool& bIsWaveline, bool& bIsBold)

{

    bIsWaveline = nLineStyle == LINESTYLE_DOUBLEWAVE || nLineStyle == LINESTYLE_SMALLWAVE

                  || nLineStyle == LINESTYLE_BOLDWAVE || nLineStyle == LINESTYLE_WAVE;

    bIsBold = nLineStyle == LINESTYLE_BOLDWAVE;

}

}

namespace cppcanvas::internal

{

TextLinesHelper::TextLinesHelper(CanvasSharedPtr xCanvas, const OutDevState& rState)

    : mpCanvas(std::move(xCanvas))

    , mbIsOverlineColorSet(rState.isTextOverlineColorSet)

    , maOverlineColor(rState.textOverlineColor)

    , mbIsUnderlineColorSet(rState.isTextLineColorSet)

    , maUnderlineColor(rState.textLineColor)

    , mbOverlineWaveline(false)

    , mbUnderlineWaveline(false)

    , mbOverlineWavelineBold(false)

    , mbUnderlineWavelineBold(false)

{

}

void TextLinesHelper::init(double nLineWidth, const cppcanvastools::TextLineInfo& rLineInfo)

{

    ::basegfx::B2DRange aRange; // default is empty.

    ::basegfx::B2DPolyPolygon aOverline, aUnderline, aStrikeout;

    cppcanvastools::createTextLinesPolyPolygon(0.0, nLineWidth, rLineInfo, aOverline, aUnderline,

                                               aStrikeout);

    mxOverline.clear();

    mxUnderline.clear();

    mxStrikeout.clear();

    uno::Reference<rendering::XGraphicDevice> xDevice = mpCanvas->getUNOCanvas()->getDevice();

    if (aOverline.count())

    {

        aRange.expand(aOverline.getB2DRange());

        mxOverline = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(xDevice, aOverline);

    }

    if (aUnderline.count())

    {

        aRange.expand(aUnderline.getB2DRange());

        mxUnderline = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(xDevice, aUnderline);

    }

    if (aStrikeout.count())

    {

        aRange.expand(aStrikeout.getB2DRange());

        mxStrikeout = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(xDevice, aStrikeout);

    }

    maOverallSize = basegfx::B2DSize(aRange.getRange().getX(), aRange.getRange().getY());

    initLineStyleWaveline(rLineInfo.mnOverlineStyle, mbOverlineWaveline, mbOverlineWavelineBold);

    initLineStyleWaveline(rLineInfo.mnUnderlineStyle, mbUnderlineWaveline, mbUnderlineWavelineBold);

}

void TextLinesHelper::render(const rendering::RenderState& rRenderState, bool bNormalText) const

{

    const rendering::ViewState aViewState(mpCanvas->getViewState());

    const uno::Reference<rendering::XCanvas> xCanvas(mpCanvas->getUNOCanvas());

    rendering::StrokeAttributes aStrokeAttributes;

    aStrokeAttributes.JoinType = rendering::PathJoinType::ROUND;

    if (mxOverline.is())

    {

        rendering::RenderState aLocalState(rRenderState);

        if (bNormalText && mbIsOverlineColorSet)

            aLocalState.DeviceColor = maOverlineColor;

        if (mbOverlineWaveline)

        {

            aStrokeAttributes.StrokeWidth = mbOverlineWavelineBold ? 2.0 : 1.0;

            xCanvas->strokePolyPolygon(mxOverline, aViewState, aLocalState, aStrokeAttributes);

        }

        else

            xCanvas->fillPolyPolygon(mxOverline, aViewState, aLocalState);

    }

    if (mxUnderline.is())

    {

        rendering::RenderState aLocalState(rRenderState);

        if (bNormalText && mbIsUnderlineColorSet)

            aLocalState.DeviceColor = maUnderlineColor;

        if (mbUnderlineWaveline)

        {

            aStrokeAttributes.StrokeWidth = mbUnderlineWavelineBold ? 2.0 : 1.0;

            xCanvas->strokePolyPolygon(mxUnderline, aViewState, aLocalState, aStrokeAttributes);

        }

        else

            xCanvas->fillPolyPolygon(mxUnderline, aViewState, aLocalState);

    }

    if (mxStrikeout.is())

        xCanvas->fillPolyPolygon(mxStrikeout, aViewState, rRenderState);

}

}

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