Re: [csswg-drafts] [cssom-view] Expose inner border dimensions from Richard Gibson via GitHub on 2017-07-19 (public-css-archive@w3.org from July 2017)

From: Richard Gibson via GitHub <sysbot+gh@w3.org>
Date: Wed, 19 Jul 2017 01:03:42 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-316242150-1500426220-sysbot+gh@w3.org>

Here's how jQuery ended up accounting for scroll gutters when calculating inner border dimensions with the current CSS APIs: https://github.com/jquery/jquery/blob/80f1c8239e9d5f793f3e54e0cb8d7bd0747e4856/src/css.js#L131-L143
```js
// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
// Assuming integer scroll gutter, subtract the rest and round down
delta += Math.max( 0, Math.ceil(
 elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
 computedVal -
 delta -
 extra -
 0.5
) );
```

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Received on Wednesday, 19 July 2017 01:03:48 UTC