Fix Cover block flicker (with improved heuristics for light/dark theme) #53375
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A >50% dimmed block should use the overlay color for computation; otherwise, the media should be used as shown in this table. | >50% dimmed | media isDark | overlayColor isDark | setIsDark() | |:----------- |:------------ |:------------------- |:----------- | | false | false | false | false | | false | false | true | false | | false | true | false | true | | false | true | true | true | | true | false | false | false | | true | false | true | true | | true | true | false | false | | true | true | true | true |
This reverts commit 7f87feb.
Co-authored-by: Glen Davies <glen.davies@automattic.com>
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Size Change: +55 B (0%) Total Size: 1.44 MB
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This was referenced Aug 6, 2023
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What?
Fixes the potential for unending state/store update loops in the Cover blocks’s hook for determining light/dark theme.
For now this includes the changes from #45076 for easy testing.
Why?
The flicker that can be experienced is awful. To fix #53211
How?
Removes the local state from the hook to directly use store state.
Testing Instructions
templatesdirectory).my-template.html, add the synced block pattern. To get the markup to add to the template, you can add the synced pattern to a post or page, then view the code editor view and copy + paste to yourmy-template.htmlfilemy-template.html.Example markup from my
my-template.htmlfile: