/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtSvg module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

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** $QT_END_LICENSE$

**

****************************************************************************/

#include "qsvgfont_p.h"

#ifndef QT_NO_SVG

#include "qpainter.h"

#include "qpen.h"

#include "qdebug.h"

#include "qpicture.h"

QT_BEGIN_NAMESPACE

QSvgGlyph::QSvgGlyph(QChar unicode, const QPainterPath &path, qreal horizAdvX)

    : m_unicode(unicode), m_path(path), m_horizAdvX(horizAdvX)

{

}

QSvgFont::QSvgFont(qreal horizAdvX)

    : m_horizAdvX(horizAdvX)

{

}

QString QSvgFont::familyName() const

{

    return m_familyName;

}

void QSvgFont::addGlyph(QChar unicode, const QPainterPath &path, qreal horizAdvX )

{

    m_glyphs.insert(unicode, QSvgGlyph(unicode, path,

                                       (horizAdvX==-1)?m_horizAdvX:horizAdvX));

}

void QSvgFont::draw(QPainter *p, const QPointF &point, const QString &str, qreal pixelSize, Qt::Alignment alignment) const

{

    p->save();

    p->translate(point);

    p->scale(pixelSize / m_unitsPerEm, -pixelSize / m_unitsPerEm);

    // Calculate the text width to be used for alignment

    int textWidth = 0;

    QString::const_iterator itr = str.constBegin();

    for ( ; itr != str.constEnd(); ++itr) {

        QChar unicode = *itr;

        if (!m_glyphs.contains(*itr)) {

            unicode = 0;

            if (!m_glyphs.contains(unicode))

                continue;

        }

        textWidth += static_cast<int>(m_glyphs[unicode].m_horizAdvX);

    }

    QPoint alignmentOffset(0, 0);

    if (alignment == Qt::AlignHCenter) {

        alignmentOffset.setX(-textWidth / 2);

    } else if (alignment == Qt::AlignRight) {

        alignmentOffset.setX(-textWidth);

    }

    p->translate(alignmentOffset);

    // since in SVG the embedded font ain't really a path

    // the outline has got to stay untransformed...

    qreal penWidth = p->pen().widthF();

    penWidth /= (pixelSize/m_unitsPerEm);

    QPen pen = p->pen();

    pen.setWidthF(penWidth);

    p->setPen(pen);

    itr = str.constBegin();

    for ( ; itr != str.constEnd(); ++itr) {

        QChar unicode = *itr;

        if (!m_glyphs.contains(*itr)) {

            unicode = 0;

            if (!m_glyphs.contains(unicode))

                continue;

        }

        p->drawPath(m_glyphs[unicode].m_path);

        p->translate(m_glyphs[unicode].m_horizAdvX, 0);

    }

    p->restore();

}

void QSvgFont::setFamilyName(const QString &name)

{

    m_familyName = name;

}

void QSvgFont::setUnitsPerEm(qreal upem)

{

    m_unitsPerEm = upem;

}

QT_END_NAMESPACE

#endif // QT_NO_SVG