Context.cpp

#include "Allotropy\Allotropy.h"
using namespace al;

// specify OpenGL version here
static const unsigned contextVersionMajor = 3;
static const unsigned contextVersionMinor = 2;

bool Context::isGlewInit = false;

static void SetupContextParameters() {
    glfwWindowHint( GLFW_CONTEXT_VERSION_MAJOR, contextVersionMajor );
    glfwWindowHint( GLFW_CONTEXT_VERSION_MINOR, contextVersionMinor );
    glfwWindowHint( GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE );
    glfwWindowHint( GLFW_OPENGL_PROFILE,        GLFW_OPENGL_CORE_PROFILE );
    glfwWindowHint( GLFW_RESIZABLE,             GL_FALSE );
}

Context::Context() : videoMode( VideoMode::GetDesktopVideoMode() ), windowTitle( "Allotropy Application" ) { }

Context::Context( const VideoMode mVideoMode, const char* mWindowTitle ) : videoMode( mVideoMode ) {
    windowTitle = new char[strlen( mWindowTitle + 1 )];
    strcpy( windowTitle, mWindowTitle );
}

Context::~Context() {
    delete[] windowTitle;
}

bool Context::Restart() {
    glfwMakeContextCurrent( 0 ); // disable any current contexts
    SetupContextParameters();
    if ( videoMode.fullscreen ) {
        _window = glfwCreateWindow( videoMode.width, videoMode.height, windowTitle, glfwGetPrimaryMonitor(), nullptr );
    }
    else {
        _window = glfwCreateWindow( videoMode.width, videoMode.height, windowTitle, nullptr, nullptr );
    }
    glfwMakeContextCurrent( _window );

    if ( _window == nullptr ) {
        fprintf( stderr, "Failed to create a window!" ); // TODO: log error messages
        return false;
    }

    if ( !Context::isGlewInit ) {
        if ( glewInit() != GLEW_OK ) {
            fprintf( stderr, "Failed to initialize GLEW!" ); // TODO: log error messages
            return false;
        }
        else {
            Context::isGlewInit = true;
        }
    }

    return true;
}

void Context::StartFrame() {

}

void Context::EndFrame() {
    glfwSwapBuffers( _window );
    glfwPollEvents();
}

bool Context::ShouldClose() {
    return glfwWindowShouldClose( _window );
}

Context* Context::Create( const VideoMode mVideoMode, const char* mWindowTitle ) {
    Context* context = new Context( mVideoMode, mWindowTitle );
    if ( context->Restart() ) {
        return context;
    }
    else {
        delete context;
        return nullptr;
    }
}