/* -*- 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 "Qt5FontFace.hxx"
#include "Qt5Tools.hxx"

#include <sft.hxx>
#include <impfontcharmap.hxx>
#include <fontinstance.hxx>
#include <fontselect.hxx>
#include <PhysicalFontCollection.hxx>

#include <QtGui/QFont>
#include <QtGui/QRawFont>

using namespace vcl;

Qt5FontFace::Qt5FontFace(const Qt5FontFace& rSrc)
    : PhysicalFontFace(rSrc)
    , m_aFontId(rSrc.m_aFontId)
{
    if (rSrc.m_xCharMap.is())
        m_xCharMap = rSrc.m_xCharMap;
}

Qt5FontFace* Qt5FontFace::fromQFont(const QFont& rFont)
{
    FontAttributes aFA;
    aFA.SetFamilyName(toOUString(rFont.family()));
    aFA.SetStyleName(toOUString(rFont.styleName()));
    aFA.SetItalic(rFont.italic() ? ITALIC_NORMAL : ITALIC_NONE);

    return new Qt5FontFace(aFA, rFont.toString());
}

Qt5FontFace::Qt5FontFace(const FontAttributes& rFA, const QString& rFontID)
    : PhysicalFontFace(rFA)
    , m_aFontId(rFontID)
    , m_bFontCapabilitiesRead(false)
{
}

Qt5FontFace::~Qt5FontFace() {}

sal_IntPtr Qt5FontFace::GetFontId() const { return reinterpret_cast<sal_IntPtr>(&m_aFontId); }

const FontCharMapRef Qt5FontFace::GetFontCharMap() const
{
    if (m_xCharMap.is())
        return m_xCharMap;

    QFont aFont;
    aFont.fromString(m_aFontId);
    QRawFont aRawFont(QRawFont::fromFont(aFont));
    QByteArray aCMapTable = aRawFont.fontTable("cmap");
    if (aCMapTable.isEmpty())
    {
        m_xCharMap = new FontCharMap();
        return m_xCharMap;
    }

    CmapResult aCmapResult;
    if (ParseCMAP(reinterpret_cast<const unsigned char*>(aCMapTable.data()), aCMapTable.size(),
                  aCmapResult))
        m_xCharMap = new FontCharMap(aCmapResult);

    return m_xCharMap;
}

bool Qt5FontFace::GetFontCapabilities(vcl::FontCapabilities& rFontCapabilities) const
{
    // read this only once per font
    if (m_bFontCapabilitiesRead)
    {
        rFontCapabilities = m_aFontCapabilities;
        return rFontCapabilities.oUnicodeRange || rFontCapabilities.oCodePageRange;
    }
    m_bFontCapabilitiesRead = true;

    QFont aFont;
    aFont.fromString(m_aFontId);
    QRawFont aRawFont(QRawFont::fromFont(aFont));
    QByteArray aOS2Table = aRawFont.fontTable("OS/2");
    if (!aOS2Table.isEmpty())
    {
        vcl::getTTCoverage(m_aFontCapabilities.oUnicodeRange, m_aFontCapabilities.oCodePageRange,
                           reinterpret_cast<const unsigned char*>(aOS2Table.data()),
                           aOS2Table.size());
    }

    rFontCapabilities = m_aFontCapabilities;
    return rFontCapabilities.oUnicodeRange || rFontCapabilities.oCodePageRange;
}

PhysicalFontFace* Qt5FontFace::Clone() const { return new Qt5FontFace(*this); }

LogicalFontInstance* Qt5FontFace::CreateFontInstance(const FontSelectPattern& rFSD) const
{
    return new LogicalFontInstance(rFSD);
}