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//=============================================================================
//
//                               OpenFlipper
//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
//                           www.openflipper.org
//
//-----------------------------------------------------------------------------
//
//                                License
//
//  OpenFlipper is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  OpenFlipper 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 Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public License
//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
//
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//   $Revision$
//   $Author$
//   $Date$
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//
//=============================================================================




//=============================================================================
//
//  CLASS Core - IMPLEMENTATION
//
//=============================================================================


//== INCLUDES =================================================================

#include "CoreWidget.hh"

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#include <QGLFormat>

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#include <OpenFlipper/common/GlobalOptions.hh>

//== IMPLEMENTATION ==========================================================



void CoreWidget::showAboutWidget( ) {

  if ( OpenFlipper::Options::nogui() )
    return;

  if ( aboutWidget_ == 0 ) {
    aboutWidget_ = new AboutWidget( this );
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    aboutWidget_->OpenFlipperAbout->append("OpenFlipper Core Version: " + OpenFlipper::Options::coreVersion() );

    aboutWidget_->OpenFlipperAbout->append("\n");
    aboutWidget_->OpenFlipperAbout->append("OpenFlipper Directories:");
    // Set the Path to the shaders
    QDir tempDir = QDir(OpenFlipper::Options::applicationDir());
    #ifdef OPENFLIPPER_DATADIR
      tempDir.cd(OPENFLIPPER_DATADIR);
    #endif
    aboutWidget_->OpenFlipperAbout->append("Data:\t " + tempDir.absolutePath() );
    aboutWidget_->OpenFlipperAbout->append("Shaders:\t " + OpenFlipper::Options::shaderDirStr() );
    aboutWidget_->OpenFlipperAbout->append("Textures:\t " + OpenFlipper::Options::textureDirStr() );
    aboutWidget_->OpenFlipperAbout->append("Scripts:\t " + OpenFlipper::Options::scriptDirStr() );
    aboutWidget_->OpenFlipperAbout->append("Icons:\t " + OpenFlipper::Options::iconDirStr() );
    aboutWidget_->OpenFlipperAbout->append("Fonts:\t" + OpenFlipper::Options::fontsDirStr() );
    aboutWidget_->OpenFlipperAbout->append("Help:\t" + OpenFlipper::Options::helpDirStr() );

    aboutWidget_->OpenFlipperAbout->append("\n");
    aboutWidget_->OpenFlipperAbout->append("OpenGL Specific Info:");
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    QString vendor = QString((const char*)glGetString(GL_VENDOR));
    aboutWidget_->OpenFlipperAbout->append("Vendor:\t" + vendor);
    QString renderer = QString((const char*)glGetString(GL_RENDERER));
    aboutWidget_->OpenFlipperAbout->append("Renderer:\t" + renderer);

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    QGLFormat::OpenGLVersionFlags flags = QGLFormat::openGLVersionFlags();

    if ( flags.testFlag(QGLFormat::OpenGL_Version_3_0) )
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      aboutWidget_->OpenFlipperAbout->append("Version:\t3.0 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_2_1))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t2.1 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_2_0))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t2.0 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_1_5))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t1.5 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_1_4))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t1.4 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_1_3))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t1.3 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_1_2))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t1.2 or higher" );
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    else if (flags.testFlag(QGLFormat::OpenGL_Version_1_1))
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      aboutWidget_->OpenFlipperAbout->append("Version:\t1.1 or higher" );
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    else
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      aboutWidget_->OpenFlipperAbout->append("Version:\tUNKNOWN!" );


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    aboutWidget_->OpenFlipperAbout->append("Supported Extensions:");
    QString glExtensions = QString((const char*)glGetString(GL_EXTENSIONS));
    aboutWidget_->OpenFlipperAbout->append(glExtensions);

    aboutWidget_->OpenFlipperAbout->moveCursor(QTextCursor::Start);


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  }

  aboutWidget_->show();

}
//=============================================================================