OGLTextElement.cpp

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/*
 * Copyright (C) <2012-2024> <EDF-DTG> <FRANCE>
 * This file is part of Code_TYMPAN (R).
 * Code_TYMPAN (R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * Code_TYMPAN (R) 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License along
 * with Code_TYMPAN (R). If not, see <https://www.gnu.org/licenses/>.
 */
 
/*
 *
 */
 
#include "OGLTextElement.h"
#include "Tympan/models/business/OLocalizator.h"
 
#include "OGLFont.h"
 
OGLTextElement::OGLTextElement()
{
    m_pOGLFontToDisplay = new OGLFont();
}
 
OGLTextElement::~OGLTextElement()
{
    if (m_pOGLFontToDisplay)
    {
        delete m_pOGLFontToDisplay;
    }
}
 
void OGLTextElement::setTextToDisplay(const QString& qsText)
{
    m_qsText = qsText;
}
 
void OGLTextElement::setFont(const QString& qsFontPath)
{
    m_qsFontPath = qsFontPath;
}
 
void OGLTextElement::setColor(const OColor& oColor)
{
    m_oColor = oColor;
}
 
int OGLTextElement::render()
{
    if (m_bVisible)
    {
 
        GLint viewport[4];
        glGetIntegerv(GL_VIEWPORT, viewport);
        unsigned int width = viewport[2];
        unsigned int height = viewport[3];
 
        // Nouvelle projection
        glMatrixMode(GL_PROJECTION);
        glPushMatrix();
        glLoadIdentity();
        glOrtho(0, width, 0.0, height, 0.0, 1.0);
 
        // Nouvelle vue
        glMatrixMode(GL_MODELVIEW);
        glPushMatrix();
        glLoadIdentity();
 
        // draw the text
        if (m_pOGLFontToDisplay->load(m_qsFontPath.toStdString().c_str()))
        {
            m_pOGLFontToDisplay->bind();
 
            // Convert QString which is UTF-16 encoded to std::string according to
            // https://stackoverflow.com/questions/4214369/how-to-convert-qstring-to-stdstring
            std::string stdTxtToDraw;
#if defined TY_PLATFORM_LINUX
            stdTxtToDraw = m_qsText.toUtf8().constData();
#else
            stdTxtToDraw = m_qsText.toLocal8Bit().constData();
#endif
 
            m_pOGLFontToDisplay->drawText(stdTxtToDraw, m_oColor, m_DisplayPositionX,
                                          m_DisplayPositionY + 14);
        }
 
        // Ancienne projection
        glMatrixMode(GL_PROJECTION);
        glPopMatrix();
 
        // Ancienne vue
        glMatrixMode(GL_MODELVIEW);
        glPopMatrix();
    }
 
    return 0;
}