33. Modal

This is an example of Animate Presence, which lets you animate an element just before it will be removed (unmounted) from the layer tree.

Framer Motion

The small white div is wrapped inside an <AnimatePresence> component (that you import from the library).

By giving the motion.div an exit property (with the values to animate to), it will animate just before it’s removed.

export function FM33Modal() {
    const [isVisible, setVisible] = React.useState(true)

    function toggle() {
        setVisible(!isVisible)
    }

    return (
        <Center>
            <motion.div
                style={{
                    width: 150,
                    height: 150,
                    borderRadius: 30,
                    backgroundColor: "rgba(255,255,255,0.5)",
                    cursor: "pointer",
                }}
                onTap={toggle}
            >
                <AnimatePresence>
                    {isVisible && (
                        <motion.div
                            style={{
                                width: 80,
                                height: 80,
                                borderRadius: 15,
                                backgroundColor: "#fff",
                                margin: "35px 0 0 35px",
                            }}
                            initial={{ opacity: 0, scale: 0.75 }}
                            animate={{ opacity: 1, scale: 1 }}
                            exit={{ opacity: 0, scale: 0 }}
                        />
                    )}
                </AnimatePresence>
            </motion.div>
        </Center>
    )
}

Code component

export function CC33Modal() {
    const [isVisible, setVisible] = React.useState(true)

    function toggle() {
        setVisible(!isVisible)
    }

    return (
        <Frame
            // Visual & layout
            size={150}
            radius={30}
            backgroundColor="rgba(255,255,255,0.5)"
            center
            // Animation
            onTap={toggle}
        >
            <AnimatePresence>
                {isVisible && (
                    <Frame
                        // Visual & layout
                        size={80}
                        radius={15}
                        backgroundColor="#fff"
                        center
                        // Animation
                        initial={{ opacity: 0, scale: 0.75 }}
                        animate={{ opacity: 1, scale: 1 }}
                        exit={{ opacity: 0, scale: 0 }}
                    />
                )}
            </AnimatePresence>
        </Frame>
    )
}

Override

This override is attached to the outer frame. It wraps the (only) child of that frame inside an <AnimatePresence> and gives it the initial, animate, and exit properties.

export function Modal(props): Override {
    const [isVisible, setVisible] = React.useState(true)

    return {
        onTap() {
            setVisible(!isVisible)
        },
        children: (
            <AnimatePresence>
                {isVisible &&
                    React.cloneElement(props.children[0], {
                        initial: { opacity: 0, scale: 0.75 },
                        animate: { opacity: 1, scale: 1 },
                        exit: { opacity: 0, scale: 0 },
                    })}
            </AnimatePresence>
        ),
    }
}

(You can’t just change a React element—you have to make a copy of it with cloneElement().)