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<!DOCTYPE html>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-position-3/#abspos-insets">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/11478">
<meta name="assert" content="
If the insets of an abspos are big enough that would make the inset-modified
containing block (IMCB) have a negative size, the weaker inset is adjusted
so that the IMCB size becomes zero instead.
">
<style>
.rtl {
direction: rtl;
}
.container {
display: inline-block;
margin: 8px;
border: 1px solid;
position: relative;
width: 20px;
height: 20px;
}
.abspos {
position: absolute;
background: orange;
}
.abspos.case1 {
margin: auto;
width: 18px;
height: 18px;
}
.abspos.case2 {
inset: 18px;
margin: auto;
}
.abspos.case3 {
inset: 18px;
margin: -10px;
}
.abspos.case4 {
width: 10px;
height: 10px;
place-self: unsafe center;
}
</style>
<!-- Case 1: Auto margins, fixed size, varying insets -->
<div class="container">
<div class="abspos case1" style="inset: 0px"
data-expected-width="18" data-expected-height="18"
data-offset-x="1" data-offset-y="1"></div>
</div>
<div class="container">
<div class="abspos case1" style="inset: 8px"
data-expected-width="18" data-expected-height="18"
data-offset-x="8" data-offset-y="1"></div>
</div>
<div class="container">
<div class="abspos case1" style="inset: 12px"
data-expected-width="18" data-expected-height="18"
data-offset-x="12" data-offset-y="3"></div>
</div>
<div class="container">
<div class="abspos case1" style="inset: 18px"
data-expected-width="18" data-expected-height="18"
data-offset-x="18" data-offset-y="9"></div>
</div>
<br>
<!-- Case 1, but RTL -->
<div class="container rtl">
<div class="abspos case1" style="inset: 0px"
data-expected-width="18" data-expected-height="18"
data-offset-x="1" data-offset-y="1"></div>
</div>
<div class="container rtl">
<div class="abspos case1" style="inset: 8px"
data-expected-width="18" data-expected-height="18"
data-offset-x="-6" data-offset-y="1"></div>
</div>
<div class="container rtl">
<div class="abspos case1" style="inset: 12px"
data-expected-width="18" data-expected-height="18"
data-offset-x="-10" data-offset-y="3"></div>
</div>
<div class="container rtl">
<div class="abspos case1" style="inset: 18px"
data-expected-width="18" data-expected-height="18"
data-offset-x="-16" data-offset-y="9"></div>
</div>
<hr>
<!-- Case 2: Auto margins, fixed insets, varying sizes -->
<div class="container">
<div class="abspos case2" style="border: solid orange 6px;"
data-expected-width="12" data-expected-height="12"
data-offset-x="18" data-offset-y="12"></div>
</div>
<div class="container">
<div class="abspos case2" style="width: 12px; height: 12px;"
data-expected-width="12" data-expected-height="12"
data-offset-x="18" data-offset-y="12"></div>
</div>
<div class="container">
<div class="abspos case2" style="min-width: 12px; min-height: 12px;"
data-expected-width="12" data-expected-height="12"
data-offset-x="18" data-offset-y="12"></div>
</div>
<div class="container">
<div class="abspos case2" style="width: min-content; height: min-content;"
data-expected-width="12" data-expected-height="12"
data-offset-x="18" data-offset-y="12">
<div style="width: 12px; height: 12px"></div>
</div>
</div>
<div class="container">
<div class="abspos case2" style="display: table;"
data-expected-width="12" data-expected-height="12"
data-offset-x="18" data-offset-y="12">
<div style="width: 12px; height: 12px"></div>
</div>
</div>
<br>
<!-- Case 2, but RTL -->
<div class="container rtl">
<div class="abspos case2" style="border: solid orange 6px;"
data-expected-width="12" data-expected-height="12"
data-offset-x="-10" data-offset-y="12"></div>
</div>
<div class="container rtl">
<div class="abspos case2" style="width: 12px; height: 12px;"
data-expected-width="12" data-expected-height="12"
data-offset-x="-10" data-offset-y="12"></div>
</div>
<div class="container rtl">
<div class="abspos case2" style="min-width: 12px; min-height: 12px;"
data-expected-width="12" data-expected-height="12"
data-offset-x="-10" data-offset-y="12"></div>
</div>
<div class="container rtl">
<div class="abspos case2" style="width: min-content; height: min-content;"
data-expected-width="12" data-expected-height="12"
data-offset-x="-10" data-offset-y="12">
<div style="width: 12px; height: 12px"></div>
</div>
</div>
<div class="container rtl">
<div class="abspos case2" style="display: table;"
data-expected-width="12" data-expected-height="12"
data-offset-x="-10" data-offset-y="12">
<div style="width: 12px; height: 12px"></div>
</div>
</div>
<hr>
<!-- Case 3: No margins, fixed insets, auto sizes -->
<div class="container">
<div class="abspos case3"
data-expected-width="20" data-expected-height="20"
data-offset-x="8" data-offset-y="8"></div>
</div>
<div class="container rtl">
<div class="abspos case3"
data-expected-width="20" data-expected-height="20"
data-offset-x="-8" data-offset-y="8"></div>
</div>
<hr>
<!-- Case 4: Fixed size, unsafe center alignment, varying insets -->
<div class="container">
<div class="abspos case4" style="inset: 5px"
data-expected-width="10" data-expected-height="10"
data-offset-x="5" data-offset-y="5"></div>
</div>
<div class="container">
<div class="abspos case4" style="inset: 10px"
data-expected-width="10" data-expected-height="10"
data-offset-x="5" data-offset-y="5"></div>
</div>
<div class="container">
<div class="abspos case4" style="inset: 15px"
data-expected-width="10" data-expected-height="10"
data-offset-x="10" data-offset-y="10"></div>
</div>
<div class="container">
<div class="abspos case4" style="inset: 20px"
data-expected-width="10" data-expected-height="10"
data-offset-x="15" data-offset-y="15"></div>
</div>
<div class="container">
<div class="abspos case4" style="inset: 25px"
data-expected-width="10" data-expected-height="10"
data-offset-x="20" data-offset-y="20"></div>
</div>
<br>
<!-- Case 4, but RTL -->
<div class="container rtl">
<div class="abspos case4" style="inset: 5px"
data-expected-width="10" data-expected-height="10"
data-offset-x="5" data-offset-y="5"></div>
</div>
<div class="container rtl">
<div class="abspos case4" style="inset: 10px"
data-expected-width="10" data-expected-height="10"
data-offset-x="5" data-offset-y="5"></div>
</div>
<div class="container rtl">
<div class="abspos case4" style="inset: 15px"
data-expected-width="10" data-expected-height="10"
data-offset-x="0" data-offset-y="10"></div>
</div>
<div class="container rtl">
<div class="abspos case4" style="inset: 20px"
data-expected-width="10" data-expected-height="10"
data-offset-x="-5" data-offset-y="15"></div>
</div>
<div class="container rtl">
<div class="abspos case4" style="inset: 25px"
data-expected-width="10" data-expected-height="10"
data-offset-x="-10" data-offset-y="20"></div>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script>
checkLayout(".abspos");
</script>
|
