From 7771a8716d4bc135adadf95cf9ddf976f4294fba Mon Sep 17 00:00:00 2001 From: wolfbeast Date: Sat, 22 Dec 2018 14:59:46 +0100 Subject: [intersection-observer] Calculate areas using int64_t. Tag #249 --- dom/base/DOMIntersectionObserver.cpp | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'dom/base') diff --git a/dom/base/DOMIntersectionObserver.cpp b/dom/base/DOMIntersectionObserver.cpp index 650ec83cd..2f3a341c5 100644 --- a/dom/base/DOMIntersectionObserver.cpp +++ b/dom/base/DOMIntersectionObserver.cpp @@ -413,13 +413,15 @@ DOMIntersectionObserver::Update(nsIDocument* aDocument, DOMHighResTimeStamp time } } - double targetArea = targetRect.width * targetRect.height; - double intersectionArea = !intersectionRect ? - 0 : intersectionRect->width * intersectionRect->height; + int64_t targetArea = + (int64_t) targetRect.Width() * (int64_t) targetRect.Height(); + int64_t intersectionArea = !intersectionRect ? 0 : + (int64_t) intersectionRect->Width() * + (int64_t) intersectionRect->Height(); double intersectionRatio; if (targetArea > 0.0) { - intersectionRatio = intersectionArea / targetArea; + intersectionRatio = (double) intersectionArea / (double) targetArea; } else { intersectionRatio = intersectionRect.isSome() ? 1.0 : 0.0; } -- cgit v1.2.3