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<!DOCTYPE html>
<title>CSS Position: absolute position, replaced elements, and minmax</title>
<link rel="author" title="mailto:atotic@google.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="help" href="https://www.w3.org/TR/CSS2/visudet.html#min-max-widths">
<meta name="assert" content="Min/max width and height interact properly with abspos replaced elements">
<style>
.container {
position: relative;
display: inline-block;
width: 400px;
height: 200px;
border: 1px solid black;
}
.target {
position: absolute;
padding: 10px;
bottom: 0;
right: 0;
border-width: 3px 7px 9px 11px;
border-color: yellow;
border-style: solid;
margin: 1px 3px 7px 9px;
}
</style>
<!-- test all combinations of minmax from section 10.4 table at
https://www.w3.org/TR/CSS2/visudet.html#min-max-widths -->
<!-- IFRAME tests -->
<!-- iframe: intrinsic size is 300x150, no aspect ratio -->
<div class="container">
<iframe class="target"
data-expected-width="338" data-expected-height="182" data-offset-y="11" data-offset-x="59"
>
</iframe>
</div>
<!-- spec 1: w > max-width -->
<div class="container">
<iframe class="target" style="max-width:100px"
data-expected-width="138" data-expected-height="182" data-offset-y="11" data-offset-x="259"
>
</iframe>
</div>
<!-- spec 2: w < min-width -->
<div class="container">
<iframe class="target" style="min-width: 350px"
data-expected-width="388" data-expected-height="182" data-offset-y="11" data-offset-x="9"
>
</iframe>
</div>
<!-- spec 3: h > max-height -->
<div class="container">
<iframe class="target" style="max-height: 150px"
data-expected-width="338" data-expected-height="182" data-offset-y="11" data-offset-x="59"
>
</iframe>
</div>
<!-- spec 4: h < min-height -->
<div class="container">
<iframe class="target" style="min-height: 165px"
data-expected-width="338" data-expected-height="197" data-offset-y="-4" data-offset-x="59"
>
</iframe>
</div>
<!-- spec 5: (w > max-width) and (h > max-height), where (max-width/w ≤ max-height/h) -->
<div class="container">
<iframe class="target" style="max-width: 240px; max-height: 135px"
data-expected-width="278" data-expected-height="167" data-offset-y="26" data-offset-x="119"
>
</iframe>
</div>
<!-- spec 6: (w > max-width) and (h > max-height), where (max-width/w > max-height/h) -->
<div class="container">
<iframe class="target" style="max-width: 270px; max-height: 120px"
data-expected-width="308" data-expected-height="152" data-offset-y="41" data-offset-x="89"
>
</iframe>
</div>
<!-- spec 7: (w < min-width) and (h < min-height), where (min-width/w ≤ min-height/h) -->
<div class="container">
<iframe class="target" style="min-width: 360px; min-height: 165px"
data-expected-width="398" data-expected-height="197" data-offset-y="-4" data-offset-x="-1"
>
</iframe>
</div>
<!-- spec 8: (w < min-width) and (h < min-height), where (min-width/w > min-height/h) -->
<div class="container">
<iframe class="target" style="min-width: 330px; min-height: 180px"
data-expected-width="368" data-expected-height="212" data-offset-y="-19" data-offset-x="29"
>
</iframe>
</div>
<!-- spec 9: (w < min-width) and (h > max-height) -->
<div class="container">
<iframe class="target" style="min-width: 330px; max-height: 135px"
data-expected-width="368" data-expected-height="167" data-offset-y="26" data-offset-x="29"
>
</iframe>
</div>
<!-- spec 10: (w > max-width) and (h < min-height) -->
<div class="container">
<iframe class="target" style="max-width: 240px; min-height: 165px"
data-expected-width="278" data-expected-height="197" data-offset-y="-4" data-offset-x="119"
>
</iframe>
</div>
<!-- IMG png tests -->
<!-- image dimensions: 200x150. images has intrinic size and aspect ratio -->
<div class="container">
<img class="target png"
data-expected-width="238" data-expected-height="182" data-offset-y="11" data-offset-x="159"
>
</div>
<!-- spec 1: w > max-width -->
<div class="container">
<img class="target png" style="max-width: 180px"
data-expected-width="218" data-expected-height="167" data-offset-y="26" data-offset-x="179"
>
</div>
<!-- spec 2: w < min-width -->
<div class="container">
<img class="target png" style="min-width: 220px"
data-expected-width="258" data-expected-height="197" data-offset-y="-4" data-offset-x="139"
>
</div>
<!-- spec 3: h > max-height -->
<div class="container">
<img class="target png" style="max-height: 135px"
data-expected-width="218" data-expected-height="167" data-offset-y="26" data-offset-x="179"
>
</div>
<!-- spec 4: h < min-height -->
<div class="container">
<img class="target png" style="min-height: 165px"
data-expected-width="258" data-expected-height="197" data-offset-y="-4" data-offset-x="139"
>
</div>
<!-- spec 5: (w > max-width) and (h > max-height), where (max-width/w ≤ max-height/h) -->
<div class="container">
<img class="target png" style="max-width: 160px; max-height: 135px"
data-expected-width="198" data-expected-height="152" data-offset-y="41" data-offset-x="199"
>
</div>
<!-- spec 6: (w > max-width) and (h > max-height), where (max-width/w > max-height/h) -->
<div class="container">
<img class="target png" style="max-width: 180px; max-height: 120px"
data-expected-width="198" data-expected-height="152" data-offset-y="41" data-offset-x="199"
>
</div>
<!-- spec 7: (w < min-width) and (h < min-height), where (min-width/w ≤ min-height/h) -->
<div class="container">
<img class="target png" style="min-width: 240px;min-height: 165px"
data-expected-width="278" data-expected-height="212" data-offset-y="-19" data-offset-x="119"
>
</div>
<!-- spec 8: (w < min-width) and (h < min-height), where (min-width/w > min-height/h) -->
<div class="container">
<img class="target png" style="min-width: 220px;min-height: 180px"
data-expected-width="278" data-expected-height="212" data-offset-y="-19" data-offset-x="119"
>
</div>
<!-- spec 9: (w < min-width) and (h > max-height) -->
<div class="container">
<img class="target png" style="min-width: 220px; max-height: 130px"
data-expected-width="258" data-expected-height="162" data-offset-y="31" data-offset-x="139"
>
</div>
<!-- spec 10: (w > max-width) and (h < min-height) -->
<div class="container">
<img class="target png" style="max-width: 180px; min-height: 165px"
data-expected-width="218" data-expected-height="197" data-offset-y="-4" data-offset-x="179"
>
</div>
<!-- IMG SVG tests -->
<!-- image dimensions: 200x150. images has no intrinic size and no aspect ratio -->
<div class="container">
<img class="target svg"
data-expected-width="338" data-expected-height="182" data-offset-y="11" data-offset-x="59"
>
</div>
<!-- spec 1: w > max-width -->
<div class="container">
<img class="target svg" style="max-width: 180px"
data-expected-width="218" data-expected-height="182" data-offset-y="11" data-offset-x="179"
>
</div>
<!-- spec 2: w < min-width -->
<div class="container">
<img class="target svg" style="min-width: 220px"
data-expected-width="338" data-expected-height="182" data-offset-y="11" data-offset-x="59"
>
</div>
<!-- spec 3: h > max-height -->
<div class="container">
<img class="target svg" style="max-height: 135px"
data-expected-width="338" data-expected-height="167" data-offset-y="26" data-offset-x="59"
>
</div>
<!-- spec 4: h < min-height -->
<div class="container">
<img class="target svg" style="min-height: 165px"
data-expected-width="338" data-expected-height="197" data-offset-y="-4" data-offset-x="59"
>
</div>
<!-- spec 5: (w > max-width) and (h > max-height), where (max-width/w ≤ max-height/h) -->
<div class="container">
<img class="target svg" style="max-width: 160px; max-height: 135px"
data-expected-width="198" data-expected-height="167" data-offset-y="26" data-offset-x="199"
>
</div>
<!-- spec 6: (w > max-width) and (h > max-height), where (max-width/w > max-height/h) -->
<div class="container">
<img class="target svg" style="max-width: 180px; max-height: 120px"
data-expected-width="218" data-expected-height="152" data-offset-y="41" data-offset-x="179"
>
</div>
<!-- spec 7: (w < min-width) and (h < min-height), where (min-width/w ≤ min-height/h) -->
<div class="container">
<img class="target svg" style="min-width: 240px;min-height: 165px"
data-expected-width="338" data-expected-height="197" data-offset-y="-4" data-offset-x="59"
>
</div>
<!-- spec 8: (w < min-width) and (h < min-height), where (min-width/w > min-height/h) -->
<div class="container">
<img class="target svg" style="min-width: 220px;min-height: 180px"
data-expected-width="338" data-expected-height="212" data-offset-y="-19" data-offset-x="59"
>
</div>
<!-- spec 9: (w < min-width) and (h > max-height) -->
<div class="container">
<img class="target svg" style="min-width: 220px; max-height: 130px"
data-expected-width="338" data-expected-height="162" data-offset-y="31" data-offset-x="59"
>
</div>
<!-- spec 10: (w > max-width) and (h < min-height) -->
<div class="container">
<img class="target svg" style="max-width: 180px; min-height: 165px"
data-expected-width="218" data-expected-height="197" data-offset-y="-4" data-offset-x="179"
>
</div>
<!-- SVG tests -->
<!-- SVGs are special: any combination of intrinsic_size and aspect_ratio
can happen. -->
<!-- Just viewbox. Has intrinsic aspect ratio, but no width/height -->
<div class="container">
<img class="target" src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E" style=""
data-expected-width="338" data-expected-height="182" data-offset-y="11" data-offset-x="59"
>
</div>
<!-- Just viewbox. Has aspect_ratio, but no intrinsic size
inline_width defaults to container width -->
<div class="container">
<img class="target" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="388" data-expected-height="67" data-offset-y="126" data-offset-x="9"
>
</div>
<!-- Just viewbox. Has aspect_ratio, but no intrinsic size
inline_width is constrained by left/right, height computed proportionally -->
<div class="container">
<img class="target" style="left:100px;right:100px;" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="188" data-expected-height="47" data-offset-y="146" data-offset-x="109"
>
</div>
<!-- Same as previous test, but with max-width:fit-content. crbug.com/1010798
-->
<div class="container">
<img class="target" style="left:100px;right:100px;max-width:fit-content" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="188" data-expected-height="47" data-offset-y="146" data-offset-x="109"
>
</div>
<!-- Viewbox + svg width. Has aspect_ratio and width. Height is scaled -->
<div class="container">
<img class="target" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' width='100px' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="138" data-expected-height="42" data-offset-y="151" data-offset-x="259"
>
</div>
<!-- Viewbox + svg height. Has aspect_ratio and height. Width is scaled -->
<div class="container">
<img class="target" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' height='20px' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="238" data-expected-height="52" data-offset-y="141" data-offset-x="159"
>
</div>
<!-- Viewbox + css height. Has aspect_ratio and height. Width is scaled -->
<div class="container">
<img class="target" style="height:20px" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="238" data-expected-height="52" data-offset-y="141" data-offset-x="159"
>
</div>
<!-- Viewbox + css width. Has aspect_ratio and width. Height is scaled -->
<div class="container">
<img class="target" style="width:238px" src="data:image/svg+xml,%3Csvg viewBox='0 0 100 10' xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E"
data-expected-width="276" data-expected-height="56" data-offset-y="137" data-offset-x="121"
>
</div>
<script>
// initialize png images with 200x150 green png
let pngSrc="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAACWAQMAAAChElVaAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABlBMVEUAgAD///8UPy9PAAAAAWJLR0QB/wIt3gAAAAd0SU1FB+MBDwkdA1Cz/EMAAAAbSURBVEjH7cGBAAAAAMOg+VPf4ARVAQAAAM8ADzwAAeM8wQsAAAAldEVYdGRhdGU6Y3JlYXRlADIwMTktMDEtMTVUMTc6Mjk6MDMtMDg6MDCYDy9IAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDE5LTAxLTE1VDE3OjI5OjAzLTA4OjAw6VKX9AAAAABJRU5ErkJggg=="
;
let images = document.querySelectorAll("img.png");
for (let i=0; i<images.length; ++i) {
images[i].src = pngSrc;
}
// SVG with no intrinsic width/height
let svgSrc="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E ";
images = document.querySelectorAll("img.svg");
for (let i=0; i<images.length; ++i) {
images[i].src = svgSrc;
}
function makeTest(el) {
return function() {
if (!el.getAttribute("data-expected-width")) {
// This code is used to generate reference data for the tests.
let text = `data-expected-width="${el.offsetWidth}" data-expected-height="${el.offsetHeight}" data-offset-y="${el.offsetTop}" data-offset-x="${el.offsetLeft}"`;
el.parentElement.innerText = text;
return;
}
assert_equals(el.offsetWidth + "", el.getAttribute("data-expected-width"), "incorrect offsetWidth");
assert_equals(el.offsetHeight + "", el.getAttribute("data-expected-height"), "incorrect offsetHeight");
assert_equals(el.offsetTop + "", el.getAttribute("data-offset-y"), "incorrect offsetTop");
assert_equals(el.offsetLeft + "", el.getAttribute("data-offset-x"), "incorrect offsetLeft");
}
};
let testNameIndex = 1;
function getTestName(el) {
let svg = el.classList.contains("svg") ? " svg" : "";
return "minmax replaced " + el.nodeName + svg + " " + testNameIndex++;
};
function testAfterImageLoads(img, test) {
let asyncTest = async_test(getTestName(img));
img.addEventListener("load", _ => {
asyncTest.step(test);
asyncTest.done();
});
};
let testElements = document.querySelectorAll(".target");
for (let i=0; i<testElements.length; ++i) {
let myTest = makeTest(testElements[i]);
if (testElements[i].nodeName == "IMG" && !testElements[i].complete) {
testAfterImageLoads(testElements[i], myTest);
} else {
test(myTest, getTestName(testElements[i]));
}
}
</script>
|
