[Webkit-unassigned] [Bug 282007] [Site isolation] Site isolated frames with css transform are not displayed correctly

Wed Oct 23 16:00:21 PDT 2024

https://bugs.webkit.org/show_bug.cgi?id=282007

--- Comment #2 from Said Abou-Hallawa <sabouhallawa at apple.com> ---
It looks like the problem with the scaling. For a page like this

<style>
    iframe {
        width: 600px;
        height: 300px;
        transform: scale(0.5);
        transform-origin: 0 0;
    }
</style>
<body>
    <iframe src="http://localhost:8000/site-isolation/resources/green-background.html" frameborder=0></iframe>
</body>

It is expected to render { 300 x 150 } green rectangle for the iframe because its size is { 600 x 300 } and it has transform of scale(0.5). But we end up having { 150 x 75 } green rectangle. So it seems the scaling is applied twice.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20241023/b39e12ba/attachment-0001.htm>