Android(kotlin) - JetPack Compose - Canvas

Canvas

• Canvas는 modifier 기본값이 없다!!

실습

@Composable
fun CanvasEx() {
    Canvas(modifier = Modifier.fillMaxSize()) {
        // drawLine (색, 시작위치, 끝 위치)
        drawLine(Color.Red, Offset(10f, 10f), Offset(300f, 300f), strokeWidth = 10f)
    
        // drawCircle(색, 반지름, 중앙 위치)
        drawCircle(Color.Blue, 300f, Offset(400f, 400f))
        
        // drawRect
        drawRect(Color.Magenta, Offset(250f, 250f), Size(500f, 500f))
    
        // 연속해서 그리기
        drawLine(Color.Black, Offset(600f, 600f), Offset(650f, 650f), strokeWidth = 10f)
        drawLine(Color.Black, Offset(650f, 650f), Offset(600f, 650f), strokeWidth = 10f)
        drawLine(Color.Black, Offset(600f, 650f), Offset(650f, 700f), strokeWidth = 10f)
    }

}

@Preview(showBackground = true)
@Composable
fun CanvasExPreview() {
    Compose_exampleTheme {
        CanvasEx()
    }
}