/* -*- 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 <vcl/outdev.hxx>

#include <font/EmphasisMark.hxx>

#include <impglyphitem.hxx>

#include <vcl/vcllayout.hxx>

void OutputDevice::createEmphasisMarks(

    FontEmphasisMark nEmphasisMark, tools::Long nEmphasisHeight, const SalLayout& rSalLayout,

    const std::function<void(const basegfx::B2DPoint&, const basegfx::B2DPolyPolygon&, bool,

                             const tools::Rectangle&, const tools::Rectangle&)>& rCallback) const

{

    // tooling method to create geometry data for EmphasisMarks. It does the same

    // as OutputDevice::ImplDrawEmphasisMarks, but feeds the data into the

    // callback for further usage

    vcl::font::EmphasisMark aEmphasisMark(nEmphasisMark, nEmphasisHeight, GetDPIY());

    Point aOffset(0, 0);

    Point aOffsetVert(0, 0);

    if (nEmphasisMark & FontEmphasisMark::PosBelow)

    {

        aOffset.AdjustY(mpFontInstance->mxFontMetric->GetDescent() + aEmphasisMark.GetYOffset());

        aOffsetVert = aOffset;

    }

    else

    {

        aOffset.AdjustY(-(mpFontInstance->mxFontMetric->GetAscent() + aEmphasisMark.GetYOffset()));

        // Todo: use ideographic em-box or ideographic character face information.

        aOffsetVert.AdjustY(-(mpFontInstance->mxFontMetric->GetAscent()

                              + mpFontInstance->mxFontMetric->GetDescent()

                              + aEmphasisMark.GetYOffset()));

    }

    tools::Long nEmphasisWidth2 = aEmphasisMark.GetWidth() / 2;

    tools::Long nEmphasisHeight2 = nEmphasisHeight / 2;

    aOffset += Point(nEmphasisWidth2, nEmphasisHeight2);

    basegfx::B2DPolyPolygon aShape(aEmphasisMark.GetShape().getB2DPolyPolygon());

    basegfx::B2DPoint aOutPoint;

    basegfx::B2DRectangle aRectangle;

    const GlyphItem* pGlyph;

    const LogicalFontInstance* pGlyphFont;

    int nStart = 0;

    while (rSalLayout.GetNextGlyph(&pGlyph, aOutPoint, nStart, &pGlyphFont))

    {

        if (!pGlyph->GetGlyphBoundRect(pGlyphFont, aRectangle))

            continue;

        if (!pGlyph->IsSpacing())

        {

            Point aAdjPoint;

            if (pGlyph->IsVertical())

            {

                aAdjPoint = aOffsetVert;

                aAdjPoint.AdjustX((-pGlyph->origWidth() + aEmphasisMark.GetWidth()) / 2);

            }

            else

            {

                aAdjPoint = aOffset;

                aAdjPoint.AdjustX(aRectangle.getMinX()

                                  + (aRectangle.getWidth() - aEmphasisMark.GetWidth()) / 2);

            }

            if (mpFontInstance->mnOrientation)

            {

                Point aOriginPt(0, 0);

                aOriginPt.RotateAround(aAdjPoint, mpFontInstance->mnOrientation);

            }

            aOutPoint.adjustX(aAdjPoint.X() - nEmphasisWidth2);

            aOutPoint.adjustY(aAdjPoint.Y() - nEmphasisHeight2);

            // use callback to propagate the data to where it was requested from

            rCallback(aOutPoint, aShape, aEmphasisMark.IsShapePolyLine(), aEmphasisMark.GetRect1(),

                      aEmphasisMark.GetRect2());

        }

    }

}

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