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fix: recalculate scrolltop when scroll.y changes

This commit is contained in:
gx-mac 2021-03-02 16:37:36 +08:00
parent 6b8ad2414e
commit 06a8d7f6ff
1 changed files with 15 additions and 4 deletions
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19
src/Table.js
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@ -276,11 +276,22 @@ class Table extends Component {
if (prevScrollY && currentScrollY && (prevScrollY !== currentScrollY) && this.props.lazyLoad && !this.props.ignoreScrollYChange) {
this.bodyTable.scrollTop = 0
} else if (this.props.ignoreScrollYChange && currentScrollY && prevScrollY && (prevScrollY !== currentScrollY)) {
const distance = this.bodyTable.scrollTop + (currentScrollY - prevScrollY)
if (distance < 0) {
this.bodyTable.scrollTop = 0
const bodyScrollTop = this.bodyTable.scrollTop
if (bodyScrollTop === 0) { // 在顶部的时候，滚动条不用动
this.bodyTable.scrollTop = 0;
} else {
this.bodyTable.scrollTop = distance
const distance = bodyScrollTop + currentScrollY - prevScrollY;
if (distance < 0) {
this.bodyTable.scrollTop = 0;
} else {
const { scrollHeight, scrollTop } = this.bodyTable
const bottomDistance = Math.abs(scrollHeight - scrollTop - prevScrollY) // 在最底部的时候也不用滚动滚动条
if (bottomDistance < 5) { // 有些dom计算不是十分精确，设置一个值来缓冲一下
this.bodyTable.scrollTop = scrollTop + prevScrollY - currentScrollY
} else {
this.bodyTable.scrollTop = distance;
}
}
}
}
// 是否传入 scroll中的y属性，如果传入判断是否是整数，如果是则进行比较 。bodyTable 的clientHeight进行判断