Add support for mask-border-* properties #2139
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Add support for the mask-border-* properties as specified in https://drafts.fxtf.org/css-masking/#the-mask-border.
These can be handy when you want a background to extend exactly to an irregular image border, but don't want the background to stretch the same way the border does. It can also be useful for other cases where you want a non-rectangular box with a size depending on its content, and such.
This was surprisingly straightforward to add since I could reuse a lot of code from #2125.
Note for any comparison testing that Chrome uses -webkit-mask-box-image-* properties rather than the "standard" names.
Let me know if you need anything else. Thanks for your consideration!