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Code Issues Releases Wiki Activity

fix: reduce motion disables nav indicator animation (#1523) 

fixes #1521
This commit is contained in:
Nolan Lawson 2019-09-24 00:28:40 -07:00 committed by GitHub
parent 3d58c86963
commit 488e87bda1
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 34 additions and 26 deletions
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60
src/routes/_components/NavItem.html
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@ -107,36 +107,19 @@
export default {
oncreate () {
const { name } = this.get()
const indicator = this.refs.indicator
on('animateNavPart1', this, ({ fromPage, toPage }) => {
if (fromPage !== name) {
return
const { name } = this.get()
const { reduceMotion } = this.store.get()
if (fromPage === name && !reduceMotion) {
this.animatePart1({ toPage })
}
mark('animateNavPart1 gBCR')
const fromRect = indicator.getBoundingClientRect()
stop('animateNavPart1 gBCR')
emit('animateNavPart2', { fromRect, fromPage, toPage })
})
on('animateNavPart2', this, ({ fromPage, fromRect, toPage }) => {
if (toPage !== name) {
return
on('animateNavPart2', this, ({ toPage, fromRect }) => {
const { name } = this.get()
const { reduceMotion } = this.store.get()
if (toPage === name && !reduceMotion) {
this.animatePart2({ fromRect })
}
mark('animateNavPart2 gBCR')
const toRect = indicator.getBoundingClientRect()
stop('animateNavPart2 gBCR')
const translateX = fromRect.left - toRect.left
const scaleX = fromRect.width / toRect.width
indicator.style.transform = `translateX(${translateX}px) scaleX(${scaleX})`
const onTransitionEnd = () => {
indicator.removeEventListener('transitionend', onTransitionEnd)
indicator.classList.remove('animate')
}
indicator.addEventListener('transitionend', onTransitionEnd)
doubleRAF(() => {
indicator.classList.add('animate')
indicator.style.transform = ''
})
})
},
store: () => store,
@ -175,6 +158,31 @@
e.preventDefault()
e.stopPropagation()
}
},
animatePart1 ({ toPage }) {
const indicator = this.refs.indicator
mark('animateNavPart1 gBCR')
const fromRect = indicator.getBoundingClientRect()
stop('animateNavPart1 gBCR')
emit('animateNavPart2', { fromRect, toPage })
},
animatePart2 ({ fromRect }) {
const indicator = this.refs.indicator
mark('animateNavPart2 gBCR')
const toRect = indicator.getBoundingClientRect()
stop('animateNavPart2 gBCR')
const translateX = fromRect.left - toRect.left
const scaleX = fromRect.width / toRect.width
indicator.style.transform = `translateX(${translateX}px) scaleX(${scaleX})`
const onTransitionEnd = () => {
indicator.removeEventListener('transitionend', onTransitionEnd)
indicator.classList.remove('animate')
}
indicator.addEventListener('transitionend', onTransitionEnd)
doubleRAF(() => {
indicator.classList.add('animate')
indicator.style.transform = ''
})
}
},
components: {