зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
1.6 KiB
HTML
62 строки
1.6 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<script src="/resources/testharness.js"></script>
|
||
|
|
<script src="/resources/testharnessreport.js"></script>
|
||
|
|
<script src="./resources/intersection-observer-test-utils.js"></script>
|
||
|
|
|
||
|
|
<style>
|
||
|
|
pre, #log {
|
||
|
|
position: absolute;
|
||
|
|
top: 0;
|
||
|
|
left: 200px;
|
||
|
|
}
|
||
|
|
#root {
|
||
|
|
overflow: visible;
|
||
|
|
height: 200px;
|
||
|
|
width: 160px;
|
||
|
|
border: 7px solid black;
|
||
|
|
}
|
||
|
|
#target {
|
||
|
|
margin: 10px;
|
||
|
|
width: 100px;
|
||
|
|
height: 100px;
|
||
|
|
padding: 10px;
|
||
|
|
background-color: green;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
|
||
|
|
<div id="root">
|
||
|
|
<div id="target" style="transform: translateY(300px)"></div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<script>
|
||
|
|
var entries = [];
|
||
|
|
var target;
|
||
|
|
|
||
|
|
runTestCycle(function() {
|
||
|
|
target = document.getElementById("target");
|
||
|
|
assert_true(!!target, "target exists");
|
||
|
|
var root = document.getElementById("root");
|
||
|
|
assert_true(!!root, "root exists");
|
||
|
|
var observer = new IntersectionObserver(function(changes) {
|
||
|
|
entries = entries.concat(changes)
|
||
|
|
}, {root: root});
|
||
|
|
observer.observe(target);
|
||
|
|
entries = entries.concat(observer.takeRecords());
|
||
|
|
assert_equals(entries.length, 0, "No initial notifications.");
|
||
|
|
runTestCycle(step0, "First rAF.");
|
||
|
|
}, "Test that the target's border bounding box is used to calculate intersection.");
|
||
|
|
|
||
|
|
function step0() {
|
||
|
|
var targetBounds = clientBounds(target);
|
||
|
|
target.style.transform = "translateY(195px)";
|
||
|
|
runTestCycle(step1, "target.style.transform = 'translateY(195px)'");
|
||
|
|
checkLastEntry(entries, 0, targetBounds.concat(0, 0, 0, 0, 8, 182, 8, 222, false));
|
||
|
|
}
|
||
|
|
|
||
|
|
function step1() {
|
||
|
|
var targetBounds = clientBounds(target);
|
||
|
|
target.style.transform = "";
|
||
|
|
checkLastEntry(entries, 1, targetBounds.concat(25, 145, 220, 222, 8, 182, 8, 222, true));
|
||
|
|
}
|
||
|
|
</script>
|