The zoom property of css changed by brower/W3C and JqueryUI component is affected
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Description
Description
Steps to reproduce the problem
testJquery.zip
1.write the code like "document.body.style.zoom=1.2" in javascript.
2.create a date component of jqueryUI like $( "#datepicker" ).datepicker({});
3.open the html and focus in the date component, the popup is Misplaced
Cause estimation
https://drafts.csswg.org/css-viewport/#zoom-om
The W3C standard for the Zoom attribute has been changed so that the getBoundingClientRect, getClientRects, and IntersectionObserver APIs return rects with scaled lengths by browser, which returned rects with unscaled lengths before.
So the offset() method developed on getBoundingClientRect also changed, return rects with scaled lengths now.
Please let us know will jquery or jqueryUI Do some correspondence.
We did this temporarily.
var originalOffset = $.fn.offset;
$.fn.offset = function() {
var originalResult = originalOffset.apply(this, arguments);
originalResult.top = originalResult.top / document.body.style.zoom;
originalResult.left = originalResult.left / document.body.style.zoom;
return originalResult;
}
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the attached test case and reproduce the misplaced datepicker popup after setting document.body.style.zoom. Read the datepicker positioning path and the offset() behavior around getBoundingClientRect, then verify that the popup is correctly positioned under the affected browser zoom behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, jquery
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 28/100