/*
    Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz>

    This file is part of Magnum.

    Magnum is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License version 3
    only, as published by the Free Software Foundation.

    Magnum 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 version 3 for more details.
*/

#include "GlutApplication.h"

#include "Context.h"
#include "ExtensionWrangler.h"

namespace Magnum { namespace Platform {

GlutApplication* GlutApplication::instance = nullptr;

GlutApplication::GlutApplication(int& argc, char** argv, const std::string& title, const Vector2i& size) {
    /* Save global instance */
    instance = this;

    /* Init GLUT */
    glutInit(&argc, argv);
    glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_CONTINUE_EXECUTION);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGBA|GLUT_DEPTH|GLUT_STENCIL);
    glutInitWindowSize(size.x(), size.y());
    glutCreateWindow(title.c_str());
    glutReshapeFunc(staticViewportEvent);
    glutSpecialFunc(staticKeyEvent);
    glutMouseFunc(staticMouseEvent);
    glutMotionFunc(staticMouseMoveEvent);
    glutDisplayFunc(staticDrawEvent);

    ExtensionWrangler::initialize();

    c = new Context;
}

GlutApplication::~GlutApplication() {
    delete c;
}

void GlutApplication::staticKeyEvent(int key, int x, int y){
    KeyEvent e(static_cast<KeyEvent::Key>(key), {x, y});
    instance->keyPressEvent(e);
}

void GlutApplication::staticMouseEvent(int button, int state, int x, int y) {
    MouseEvent e(static_cast<MouseEvent::Button>(button), {x, y});
    if(state == GLUT_DOWN)
        instance->mousePressEvent(e);
    else
        instance->mouseReleaseEvent(e);
}

void GlutApplication::staticMouseMoveEvent(int x, int y) {
    MouseMoveEvent e({x, y});
    instance->mouseMoveEvent(e);
}

}}