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fix: 修正intersectionRect的计算方式并对齐微信添加宽高 #2556

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Merged
hiyuki merged 2 commits into from
Aug 25, 2026
Merged

fix: 修正intersectionRect的计算方式并对齐微信添加宽高 #2556

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7f33472
fix: 修正intersectionRect的计算方式并添加宽高
Jul 26, 2026
a81211d
Merge branch 'master' into fix-intersectionrect
hiyuki Aug 25, 2026
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4 changes: 3 additions & 1 deletion packages/api-proxy/src/platform/api/create-intersection-observer/rnIntersectionObserver.js
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Original file line number Diff line number Diff line change
Expand Up @@ -184,9 +184,11 @@ class RNIntersectionObserver {
right: this._restrictValueInRange(relativeRect.left, relativeRect.right, observeRect.right),
bottom: this._restrictValueInRange(relativeRect.top, relativeRect.bottom, observeRect.bottom)
}
visibleRect.width = visibleRect.right - visibleRect.left
visibleRect.height = visibleRect.bottom - visibleRect.top

const targetArea = (observeRect.bottom - observeRect.top) * (observeRect.right - observeRect.left)
const visibleArea = (visibleRect.bottom - visibleRect.top) * (visibleRect.right - visibleRect.left)
const visibleArea = visibleRect.width * visibleRect.height
const intersectionRatio = targetArea ? visibleArea / targetArea : 0
const isInsected = isInit ? intersectionRatio > this.initialRatio : !(this._getRatioIndex(intersectionRatio, this.thresholds) === this._getRatioIndex(this.previousIntersectionRatio[observeIndex], this.thresholds))
this.previousIntersectionRatio[observeIndex] = intersectionRatio
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