feat(ui-toolkit): skip parallax header after user scrolls
This commit is contained in:
parent
77fd895b6c
commit
882085a170
@ -53,12 +53,17 @@ const Img = styled.img`
|
||||
const gutterWidth = 47 + 70;
|
||||
const windowWidth = (window || {}).outerWidth + 70;
|
||||
|
||||
let isScrolling;
|
||||
|
||||
const isScrolledOutsideView = () => {
|
||||
const elem = document.getElementById('parallaxWrapper');
|
||||
const eleHeight = elem.clientHeight;
|
||||
const scrollY = window.scrollY;
|
||||
if (elem) {
|
||||
const eleHeight = elem.clientHeight;
|
||||
const scrollY = window.scrollY;
|
||||
|
||||
return scrollY > eleHeight;
|
||||
return scrollY >= eleHeight;
|
||||
}
|
||||
return true;
|
||||
};
|
||||
|
||||
export default class extends Component {
|
||||
@ -68,6 +73,35 @@ export default class extends Component {
|
||||
show: true
|
||||
};
|
||||
|
||||
componentDidMount() {
|
||||
if (this.props.hideAfterScroll) {
|
||||
isScrolledOutsideView()
|
||||
? this.setState({ show: false })
|
||||
: window.addEventListener('scroll', this.scrollStopHandler);
|
||||
}
|
||||
}
|
||||
|
||||
scrollStopHandler = () => {
|
||||
window.clearTimeout(isScrolling);
|
||||
isScrolling = setTimeout(() => {
|
||||
isScrolledOutsideView()
|
||||
? this.setState({ show: false }, () =>
|
||||
window.removeEventListener('scroll', this.scrollStopHandler)
|
||||
)
|
||||
: this.skipParallax();
|
||||
}, 66);
|
||||
};
|
||||
|
||||
skipParallax = () => {
|
||||
if (this.state.show) {
|
||||
window.scroll({
|
||||
top: document.getElementsByTagName('header')[0].offsetTop,
|
||||
left: 0,
|
||||
behavior: 'smooth'
|
||||
});
|
||||
}
|
||||
};
|
||||
|
||||
render() {
|
||||
window.addEventListener('resize', () => {
|
||||
this.setState({
|
||||
@ -76,14 +110,6 @@ export default class extends Component {
|
||||
});
|
||||
});
|
||||
|
||||
if (this.props.hideAfterScroll) {
|
||||
window.addEventListener('scroll', () => {
|
||||
if (this.state.show && isScrolledOutsideView()) {
|
||||
this.setState({ show: false });
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
const array = Array.apply(null, { length: this.state.value }).map(
|
||||
Number.call,
|
||||
Number
|
||||
|
Loading…
Reference in New Issue
Block a user