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Try: Alternate spacer min-height fix. #32543

Merged
merged 2 commits into from
Jun 10, 2021
Merged

Try: Alternate spacer min-height fix. #32543

merged 2 commits into from
Jun 10, 2021

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jasmussen
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Description

In #25528, I added a small overlay on the Spacer block giving it a min-height so that it's selectable even if it's only 1px tall. This was built in context of every single block in the editing canvas having a top and bottom margin, always.

Block themes do not have this margin anymore, relying instead only on margins that the theme provides. In that context, this extra tap-overlay is now conflicting with selecting blocks, shown here in red:

before

This PR does two things:

  1. It makes that tappable min-height overlay way smaller, 8px tall. If you're using a spacer block, most of the time, I would expect, you do it to add space. So a >8px tall spacer I would count among the edgecases we shouldn't optimize for. 8px makes it selectable in the canvas, with minimum cost to adjacent blocks.
  2. It makes this min-height go downwards rather than upwards. That means it does still cover 7px of the next block, if the block is 1px tall. The benefit of pointing downwards means the extra space only comes into play when the Spacer is less than 8px tall, whereas before when it covered upwards even when the block was plenty tappable and tall.

after

How has this been tested?

  1. Use a block theme, such as Empty Theme.
  2. Insert a navigation block (which doesn't come with a built-in margin) and a spacer block.
  3. Select the navigation block, it should be easy to select.
  4. Now insert a 1px tall spacer block. It might be hard to select those 8px, but it's there as a minimum.

Checklist:

  • My code is tested.
  • My code follows the WordPress code style.
  • My code follows the accessibility standards.
  • I've tested my changes with keyboard and screen readers.
  • My code has proper inline documentation.
  • I've included developer documentation if appropriate.
  • I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

@jasmussen jasmussen added [Block] Spacer Affects the Spacer Block CSS Styling Related to editor and front end styles, CSS-specific issues. labels Jun 9, 2021
@jasmussen jasmussen self-assigned this Jun 9, 2021
@jasmussen jasmussen requested a review from ajitbohra as a code owner June 9, 2021 11:03
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Size Change: +1.39 kB (0%)

Total Size: 1.03 MB

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This makes sense, giving tentative approval. One case I noticed as adding a spacer inside of a horizontal navigation block. For that use case I think we'd want a minimum width

Screen Shot 2021-06-09 at 9 14 04 AM

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Excellent point! I'll add a minwidth there! The original solution was not horizontally aware. Thanks Kerry.

@jasmussen
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I pushed a fix so that it works in horizontal contexts:

spacer min-height

It's "clever" in that it has a both 100% width and height now, with min-width/height fallbacks. But those 100 width/heights only actually span the block in context of their orientation, so it works without the need for further specificity.

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Going to land this one as an improvement over what we have, and will as always follow up on anything that might come.

@jasmussen jasmussen merged commit 12d9340 into trunk Jun 10, 2021
@jasmussen jasmussen deleted the try/alt-spacer-fix branch June 10, 2021 07:56
@github-actions github-actions bot added this to the Gutenberg 10.9 milestone Jun 10, 2021
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