Vodniki · 03

Komponente Animated

Upodabljajte navadne elemente, ki se premikajo k cilju, se odzivajo na geste in elegantno odidejo.

Animated.<tag>

Animated.div, Animated.button, Animated.svg in vsaka druga oznaka HTML ali SVG upodobijo navaden element brez ovoja. Njihov style sprejema vrednosti, transformacije pa so lahko polja kot v React Nativu.

Končno gibanje transforma in opacityja na teh elementih, vključno z vzmetmi, lahko predvaja brskalnik.

Pripravljanje primera …

JavaScript je izklopljen. Koda spodaj je celoten primer.

App.jsx

import { useState } from 'react';
import { Animated } from '@kkwaenggwari/animated';
import './styles.css';

const plans = ['Research', 'Build', 'Launch'];

export default function App({ stiffness = 260, damping = 22 }) {
  const [selected, setSelected] = useState('Build');

  return (
    <div className="stage">
      {plans.map((plan, index) => (
        <Animated.button
          key={plan}
          type="button"
          className={plan === selected ? 'plan active' : 'plan'}
          onClick={() => setSelected(plan)}
          seed={{ opacity: 0, transform: [{ translateY: 24 }] }}
          pose={{
            opacity: 1,
            transform: [
              { translateY: plan === selected ? -12 : 0 },
              { scale: plan === selected ? 1.06 : 1 },
            ],
          }}
          tempo={{ spring: { stiffness, damping } }}
        >
          <strong>{plan}</strong>
          <span>Step {index + 1}</span>
        </Animated.button>
      ))}
    </div>
  );
}

styles.css

.stage {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
  min-height: 220px;
  padding: 40px 28px 28px;
}

.plan {
  display: grid;
  gap: 6px;
  width: 150px;
  padding: 20px;
  border: 1px solid #e4e6ef;
  border-radius: 18px;
  background: #fff;
  color: #16181d;
  font: inherit;
  text-align: start;
  cursor: pointer;
}

.plan span {
  color: #5b6070;
  font-size: 14px;
}

.plan.active {
  border-color: #2854ff;
  background: #2854ff;
  color: #fff;
}

.plan.active span {
  color: #d6e0ff;
}

seed, pose, poses in tempo

seed je prva sličica, pose trenutni cilj (objekt ali ime vnosa v poses), tempo pa timing ali vzmet. Sprememba samo tempo ne predvaja znova nespremenjenega cilja.

onRest se sproži, ko element prispe.

Card.jsx

<Animated.article
  seed={{ opacity: 0, transform: [{ translateY: 16 }] }}
  pose={selected ? 'raised' : 'rest'}
  poses={{
    rest: { opacity: 1, transform: [{ translateY: 0 }, { scale: 1 }] },
    raised: { opacity: 1, transform: [{ translateY: -8 }, { scale: 1.04 }] },
  }}
  tempo={{ spring: { stiffness: 300, damping: 26 } }}
  onRest={() => console.log('arrived')}
/>;

Odziv na geste

respond preslika geste v začasne cilje: hover, focus, focusWithin, press, longPress, drag, inView in druge. Ko se odziv konča, se element vrne v svojo pozo od tam, kjer koli je.

onResponse javi začetek in konec vsakega odziva, respond={{ press: {} }} pa sledi gesti brez kakršne koli vidne spremembe.

Pripravljanje primera …

JavaScript je izklopljen. Koda spodaj je celoten primer.

App.jsx

import { Animated } from '@kkwaenggwari/animated';
import './styles.css';

const actions = ['Share', 'Save', 'Export'];

export default function App({ lift = 8, scale = 1.06 }) {
  return (
    <div className="stage">
      {actions.map((action) => (
        <Animated.button
          key={action}
          type="button"
          className="action"
          pose={{ transform: [{ translateY: 0 }, { scale: 1 }] }}
          respond={{
            hover: { transform: [{ translateY: -lift }, { scale }] },
            focus: { transform: [{ translateY: -lift }, { scale }] },
            press: { transform: [{ translateY: 0 }, { scale: 0.94 }] },
          }}
          tempo={{ spring: { stiffness: 420, damping: 24 } }}
        >
          {action}
        </Animated.button>
      ))}
    </div>
  );
}

styles.css

.stage {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 200px;
  padding: 32px;
}

.action {
  min-width: 120px;
  min-height: 56px;
  padding: 0 24px;
  border: 0;
  border-radius: 16px;
  background: #16181d;
  color: #fff;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.action:focus-visible {
  outline: 3px solid #5c7cff;
  outline-offset: 3px;
}

Skupne privzete vrednosti z Animated.Scope

Animated.Scope posreduje ime poze, tempo in privzete vrednosti animacije elementom Animated v njem.

Menu.jsx

<Animated.Scope tempo={{ spring: { stiffness: 380, damping: 30 } }}>
  <Animated.li pose={{ opacity: 1 }} />
  <Animated.li pose={{ opacity: 1 }} />
</Animated.Scope>;

Lastne komponente

Animated.wrap(Component) — v React Nativu createAnimatedComponent — poskrbi, da komponenta, ki posreduje ref in se razreši v en element DOM, sprejema iste props.

Link.jsx

import { forwardRef } from 'react';
import { Animated } from '@kkwaenggwari/animated';

const Link = forwardRef((props, ref) => <a ref={ref} {...props} />);
const AnimatedLink = Animated.wrap(Link);

<AnimatedLink href="/pricing" respond={{ hover: { transform: [{ translateX: 4 }] } }} />;