PDF4QT/Pdf4QtLibCore/sources/pdftextlayoutgenerator.cpp

//    Copyright (C) 2023 Jakub Melka
//
//    This file is part of PDF4QT.
//
//    PDF4QT is free software: you can redistribute it and/or modify
//    it under the terms of the GNU Lesser General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    with the written consent of the copyright owner, any later version.
//
//    PDF4QT is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU Lesser General Public License for more details.
//
//    You should have received a copy of the GNU Lesser General Public License
//    along with PDF4QT.  If not, see <https://www.gnu.org/licenses/>.

#include "pdftextlayoutgenerator.h"
#include "pdfdbgheap.h"

namespace pdf
{

PDFTextLayout PDFTextLayoutGenerator::createTextLayout()
{
    m_textLayout.perform();
    m_textLayout.optimize();
    return qMove(m_textLayout);
}

bool PDFTextLayoutGenerator::isContentSuppressedByOC(PDFObjectReference ocgOrOcmd)
{
    if (m_features.testFlag(PDFRenderer::IgnoreOptionalContent))
    {
        return false;
    }

    return PDFPageContentProcessor::isContentSuppressedByOC(ocgOrOcmd);
}

bool PDFTextLayoutGenerator::isContentKindSuppressed(ContentKind kind) const
{
    switch (kind)
    {
        case ContentKind::Shapes:
        case ContentKind::Text:
        case ContentKind::Images:
        case ContentKind::Shading:
            return true;

        case ContentKind::Tiling:
            return false; // Tiling can have text

        default:
        {
            Q_ASSERT(false);
            break;
        }
    }

    return false;
}

void PDFTextLayoutGenerator::performOutputCharacter(const PDFTextCharacterInfo& info)
{
    if (!isContentSuppressed() && !info.character.isSpace())
    {
        m_textLayout.addCharacter(info);
    }
}

}   // namespace pdf