@Composable
@Preview
fun App() {
    MaterialTheme {
        Column(Modifier.fillMaxSize(), Arrangement.spacedBy(5.dp)) {
            Button(onClick = {}) {
                Text("Hello")
            }
            LwjglExample()
        }
    }
}

@Composable
@Preview
fun LwjglExample() {
    SwingPanel(
        background = Color.Black,
        modifier = Modifier.size(200.dp, 200.dp),
        factory = {
            val data = GLData().apply {
                majorVersion = 3
                minorVersion = 3
                profile = GLData.Profile.CORE
                samples = 4
            }
            object : AWTGLCanvas(data) {
                override fun initGL() {
                    createCapabilities()
                    glClearColor(0.3f, 0.4f, 0.5f, 1F)
                }

                override fun paintGL() {
                    val w = 200
                    val h = 200 // TODO: Remove magic numbers
                    val aspect = w.toFloat() / h
                    val now = System.currentTimeMillis() * 0.001
                    val width = abs(sin(now * 0.3)).toFloat()
                    glClear(GL_COLOR_BUFFER_BIT)
                    glViewport(0, 0, w, h)
                    glBegin(GL_QUADS)
                    glColor3f(0.4f, 0.6f, 0.8f)
                    glVertex2f(-0.75f * width / aspect, 0.0f)
                    glVertex2f(0f, -0.75f)
                    glVertex2f(+0.75f * width / aspect, 0f)
                    glVertex2f(0f, +0.75f)
                    glEnd()
                    swapBuffers()
                }
            }
        },
        update = {
            val renderLoop: Runnable = object : Runnable {
                override fun run() {
                    if (!it.isValid) return
                    it.render()
                    SwingUtilities.invokeLater(this)
                }
            }
            SwingUtilities.invokeLater(renderLoop)
        }
    )
}