/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
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**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** General Public License version 3 as published by the Free Software
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
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****************************************************************************/

#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
