使用React和内联CSS的苹果动画问题
P粉729436537
P粉729436537 2024-01-10 17:08:30
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我试图在React中使用HTML和CSS重新创建这个动画,使用内联样式和TypeScript。我正在创建一个带有样式信息的对象,并在style属性中引用它。下面是代码。它不起作用,我不确定我做错了什么,我怀疑样式没有正确定义和引用?

这是我尝试重写的原始Codepen示例: Apple动画

这是我的代码

import React from 'react';

const styles = {
    
    '@keyframes showTopText': {
        '0%': { transform: 'translate3d(0, 100%, 0)' },
        '40%, 60%': { transform: 'translate3d(0, 50%, 0)' },
        '100%': { transform: 'translate3d(0, 0, 0)' },
    },
    '@keyframes showBottomText': {
        '0%': { transform: 'translate3d(0, -100%, 0)' },
        '100%': { transform: 'translate3d(0, 0, 0)' },
    },

    animatedTitle: {
        color: '#222',
        fontFamily: 'Roboto, Arial, sans-serif',
        height: '90vmin',
        left: '50%',
        top: '50%',
        transform: 'translate(-50%, -50%)',
        width: '90vmin',
    },
    'animatedTitle > div': {
        height: '50%',
        overflow: 'hidden',
        position: 'absolute',
        width: '100%',
    },
    'animatedTitle > div div': {
        fontSize: '12vmin',
        padding: '2vmin 0',
        position: 'absolute',
    },
    'animatedTitle > div div span': {
        display: 'block',
    },
    'animated-title > div.text-top': {
        borderBottom: '1vmin solid #000',
        top: 0,
    },
    'animatedTitle > div.text-top div': {
        animation: 'showTopText 1s',
        animationDelay: '0.5s',
        animationFillMode: 'forwards',
        bottom: 0,
        transform: 'translate(0, 100%)',
    },
    'animatedTitle > div.text-top div span:first-child': {
        color: '#767676',
    },
    'animatedTitle > div.text-bottom': {
        bottom: 0,
    },
    'animatedTitle > div.text-bottom div': {
        animation: 'showBottomText 0.5s',
        animationDelay: '1.75s',
        animationFillMode: 'forwards',
        top: 0,
        transform: 'translate(0, -100%)',
    },
};

function Design() {
    return (
        <div style={styles.animatedTitle}>
            <div style={styles['animatedTitle > div.text-top div']}>
                <div>
                    <span>mimicking</span>
                    <span>apple's design</span>
                </div>
            </div>
            <div style={styles['animatedTitle > div.text-bottom']}>
                <div>for the win!</div>
            </div>
        </div>
    );
}

export { Design };

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全部回复(1)
P粉115840076

您可以尝试使用 styled-components 来使您的组件更灵活和兼容。我使用 styled-components 复制了 codepen 的示例,并使其易于扩展。

因此,TopAnimateBlockBottomAnimateBlock 都有 numOfLine 属性,表示块内有多少行。在 BottomAnimateBlock 中的第二个属性是 delayTopLine,它应该与 TopAnimateBlock 中的 numOfLine 数量相同,因为我们需要等待顶部行播放。

此外,您可以通过 TextStylecolor 属性轻松更改文本颜色,并传递颜色值,HEX 颜色或 rgba() / hsla()

TextAnimation.tsx

import styled, { keyframes } from 'styled-components';

const showTopText = keyframes`
  0% { transform: translate3d(0, 100% , 0); }
  40%, 60% { transform: translate3d(0, 50%, 0); }
  100% { transform: translate3d(0, 0, 0); }
`;
const showBottomText = keyframes`
  0% { transform: translate3d(0, -100%, 0); }
  100% { transform: translate3d(0, 0, 0); }
`;

const Section = styled.section`
  width: calc(100% + 10vmin);
  display: flex;
  flex-flow: column;
  padding: 2vmin 0;
  overflow: hidden;
  &:last-child {
    border-top: 1vmin solid white;
  }
`;

const Block = styled.div<{ numOfLine: number }>`
  position: relative;
`;
const TopAnimateBlock = styled(Block)`
  animation: ${showTopText} calc(0.5s * ${props => props.numOfLine}) forwards;
  animation-delay: 0.5s;
  transform: translateY(calc(100% * ${props => props.numOfLine}));
`;
const BottomAnimateBlock = styled(Block)<{ delayTopLine: number }>`
  animation: ${showBottomText} calc(0.5s * ${props => props.numOfLine}) forwards;
  animation-delay: calc(0.7s * ${props => props.delayTopLine});
  transform: translateY(calc(-100% * ${props => props.numOfLine}));
`;

const TextStyle = styled.p<{ color: string }>`
  font-family: Roboto, Arial, sans-serif;
  font-size: 12vmin;
  color: ${props => props.color};
`;

export const TextAnimation = () => {
  return (
    <>
      <Section>
        <TopAnimateBlock numOfLine={2}>
          <TextStyle color="grey">mimicking</TextStyle>
          <TextStyle color="white">apple's design</TextStyle>
        </TopAnimateBlock>
      </Section>
      <Section>
        <BottomAnimateBlock numOfLine={1} delayTopLine={2}>
          <TextStyle color="white">for the win!</TextStyle>
        </BottomAnimateBlock>
      </Section>
    </>
  );
};

如果我们想要动画化3行而不是2行,只需添加/更改:

  1. 添加新的 TextStyle 组件
  2. TopAnimateBlock 中将 numOfLine 从2更改为3,在 BottomAnimateBlock 中将 delayTopLine 从2更改为3
  3. 并将关键帧替换为以下片段:
const showTopText = keyframes`
  0% { transform: translate3d(0, 100% , 0); }
  25%, 40% { transform: translate3d(0, 66%, 0); }
  60%, 75% { transform: translate3d(0, 33%, 0); }
  100% { transform: translate3d(0, 0, 0); }
`;
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