Blitz - WPT: anchor-size-css-zoom.html

wpt / css / css-anchor-position / anchor-size-css-zoom.html

/css/css-anchor-position/anchor-size-css-zoom.html

<!DOCTYPE html>

<title>CSS Anchor Positioning: tests that anchor-size() works with CSS zoom property</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-size-fn">
<link rel="help" href="https://drafts.csswg.org/css-viewport/#zoom-property">
<link rel="author" href="mailto:kiet.ho@apple.com">
<link rel="match" href="reference/anchor-size-css-zoom-ref.html">

<style>
    #containing-block {
        position: relative;

        zoom: 2;
    }

    #anchor {
        position: absolute;

        width: 200px;
        height: 100px;

        anchor-name: --anchor;

        background: red;
    }

    #anchor-positioned {
        position: absolute;

        width: anchor-size(--anchor width);
        height: anchor-size(--anchor height);

        background: green;

        z-index: 1;
    }
</style>

Test passes if no red is visible.

<div id="containing-block">
    <!--
        Both rectangles below overlaps.
        #anchor is red, #anchor-positioned is green and above #anchor in Z order.
        If no red is visible then #anchor-positioned has fully covered #anchor.
    -->
    <div id="anchor"></div>
    <div id="anchor-positioned"></div>
</div>

/css/css-anchor-position/reference/anchor-size-css-zoom-ref.html

<!DOCTYPE html>

<style>
    #containing-block {
        position: relative;

        zoom: 2;
    }

    #anchor {
        position: absolute;

        width: 200px;
        height: 100px;

        background: red;
    }

    #anchor-positioned {
        position: absolute;

        width: 200px;
        height: 100px;

        background: green;

        z-index: 1;
    }
</style>

Test passes if no red is visible.

<div id="containing-block">
    <div id="anchor"></div>
    <div id="anchor-positioned"></div>
</div>