/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qsgdefaultglyphnode_p.h"
#include "qsgdefaultglyphnode_p_p.h"

#include <qopenglshaderprogram.h>
#include <private/qfont_p.h>

QT_BEGIN_NAMESPACE

QSGDefaultGlyphNode::QSGDefaultGlyphNode()
    : m_style(QQuickText::Normal)
    , m_material(0)
    , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 0)
{
    m_geometry.setDrawingMode(GL_TRIANGLES);
    setGeometry(&m_geometry);
}

QSGDefaultGlyphNode::~QSGDefaultGlyphNode()
{
    delete m_material;
}

void QSGDefaultGlyphNode::setColor(const QColor &color)
{
    m_color = color;
    if (m_material != 0) {
        m_material->setColor(color);
        markDirty(DirtyMaterial);
    }
}

void QSGDefaultGlyphNode::setGlyphs(const QPointF &position, const QGlyphRun &glyphs)
{
    if (m_material != 0)
        delete m_material;

    m_position = position;
    m_glyphs = glyphs;

#ifdef QSG_RUNTIME_DESCRIPTION
    qsgnode_set_description(this, QLatin1String("glyphs"));
#endif
}

void QSGDefaultGlyphNode::setStyle(QQuickText::TextStyle style)
{
    if (m_style == style)
        return;
    m_style = style;
}

void QSGDefaultGlyphNode::setStyleColor(const QColor &color)
{
    if (m_styleColor == color)
        return;
    m_styleColor = color;
}

void QSGDefaultGlyphNode::update()
{
    QRawFont font = m_glyphs.rawFont();
    QMargins margins(0, 0, 0, 0);

    if (m_style == QQuickText::Normal) {
        m_material = new QSGTextMaskMaterial(font);
    } else if (m_style == QQuickText::Outline) {
        QSGOutlinedTextMaterial *material = new QSGOutlinedTextMaterial(font);
        material->setStyleColor(m_styleColor);
        m_material = material;
        margins = QMargins(1, 1, 1, 1);
    } else {
        QSGStyledTextMaterial *material = new QSGStyledTextMaterial(font);
        if (m_style == QQuickText::Sunken) {
            material->setStyleShift(QVector2D(0, -1));
            margins.setTop(1);
        } else if (m_style == QQuickText::Raised) {
            material->setStyleShift(QVector2D(0, 1));
            margins.setBottom(1);
        }
        material->setStyleColor(m_styleColor);
        m_material = material;
    }

    m_material->setColor(m_color);

    QRectF boundingRect;
    m_material->populate(m_position, m_glyphs.glyphIndexes(), m_glyphs.positions(), geometry(),
                         &boundingRect, &m_baseLine, margins);
    setBoundingRect(boundingRect);

    setMaterial(m_material);
    markDirty(DirtyGeometry);
}

QT_END_NAMESPACE
