Build Coupon UI - Setup view attribute

CouponLayout.kt

class CouponLayout : FrameLayout {
    companion object {
        const val SEMI_CIRCLE_NONE = 0x00
        const val SEMI_CIRCLE_LEFT = 0x01
        const val SEMI_CIRCLE_TOP = 0x02
        const val SEMI_CIRCLE_RIGHT = 0x04
        const val SEMI_CIRCLE_BOTTOM = 0x08
        const val SEMI_CIRCLE_HORIZONTAL = SEMI_CIRCLE_LEFT or SEMI_CIRCLE_RIGHT
        const val SEMI_CIRCLE_VERTICAL = SEMI_CIRCLE_TOP or SEMI_CIRCLE_BOTTOM
        const val SEMI_CIRCLE_ALL = SEMI_CIRCLE_HORIZONTAL or SEMI_CIRCLE_VERTICAL
        const val CORNER_NONE = 0x00
        const val CORNER_TOP_LEFT = 0x01
        const val CORNER_TOP_RIGHT = 0x02
        const val CORNER_BOTTOM_LEFT = 0x04
        const val CORNER_BOTTOM_RIGHT = 0x08
        const val CORNER_TOP = CORNER_TOP_LEFT or CORNER_TOP_RIGHT
        const val CORNER_BOTTOM = CORNER_BOTTOM_LEFT or CORNER_BOTTOM_RIGHT
        const val CORNER_LEFT = CORNER_TOP_LEFT or CORNER_BOTTOM_LEFT
        const val CORNER_RIGHT = CORNER_TOP_RIGHT or CORNER_BOTTOM_RIGHT
        const val CORNER_ALL = CORNER_TOP_LEFT or CORNER_TOP_RIGHT or CORNER_BOTTOM_LEFT or CORNER_BOTTOM_RIGHT
    }
    private var borderWidth = 4f
    private var cornerRadius = 32f
    private var semiCircleRadius = 48f
    private var backgroundPathColor = Color.WHITE
    private var backgroundPathColorStateList: ColorStateList? = null
    private var borderPathColor = Color.parseColor("#00000000")
    private var borderPathColorStateList: ColorStateList? = null
    private var cornerDirection = CORNER_ALL
    private var semiCircleDirection = SEMI_CIRCLE_HORIZONTAL
    /* ... */
    private fun setup(attrs: AttributeSet?, defStyleAttr: Int) {
        /* ... */
        val attribute = context.obtainStyledAttributes(attrs, R.styleable.CouponLayout, defStyleAttr, 0)
        borderWidth = attribute.getDimension(R.styleable.CouponLayout_coupon_borderWidth, 4f)
        cornerRadius = attribute.getDimension(R.styleable.CouponLayout_coupon_cornerRadius, 32f)
        semiCircleRadius = attribute.getDimension(R.styleable.CouponLayout_coupon_semiCircleRadius, 48f)
        backgroundPathColor = attribute.getColor(R.styleable.CouponLayout_coupon_backgroundColor, Color.WHITE)
        backgroundPathColorStateList = attribute.getColorStateList(R.styleable.CouponLayout_coupon_backgroundColor)
        borderPathColor = attribute.getColor(R.styleable.CouponLayout_coupon_borderColor, Color.parseColor("#00000000"))
        borderPathColorStateList = attribute.getColorStateList(R.styleable.CouponLayout_coupon_borderColor)
        cornerDirection = attribute.getInt(R.styleable.CouponLayout_coupon_cornerDirection, CORNER_ALL)
        semiCircleDirection = attribute.getInt(R.styleable.CouponLayout_coupon_semiCircleDirection, SEMI_CIRCLE_HORIZONTAL)
        attribute.recycle()
    }
}