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Try: Media & Text max-width rule. #28922

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jasmussen
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@jasmussen jasmussen commented Feb 10, 2021

Description

Make the media & text image rules more resilient to CSS bleed. Fixes #17787, props @Wingo5315, alternative to #28822.

How has this been tested?

Insert a Media & Text block, try adding a small image, a big image, or a video. All three should behave predictably in the editor, and the frontend should look identical.

Screenshots

If a theme has CSS to style the img tag (such as setting widths, min-widths or max-widths), those styles will affect the image inside media & text as well.

Here's what could happen with a min-width:

Screenshot 2021-02-10 at 17 01 14

Here's what could happen with a too-high max-width:

Screenshot 2021-02-10 at 17 01 30

This PR adds explicit min and max-widths, but keeps the width, to make the behavior consistent.

Checklist:

  • My code is tested.
  • My code follows the WordPress code style.
  • My code follows the accessibility standards.
  • 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.

@jasmussen jasmussen added the [Block] Media & Text Affects the Media & Text Block label Feb 10, 2021
@jasmussen jasmussen self-assigned this Feb 10, 2021
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Size Change: -88 B (0%)

Total Size: 1.37 MB

Filename Size Change
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@adamsilverstein
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Nice @jasmussen - this worked well in my testing!

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Nice! Worked well in my local testing.

@jasmussen
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Thank you for the review Adam! I'm tempted to merge, but because the block is in wide usage, I'd love a few more eyes on it just as a sanity check.

For context, I looked up the initial PR that added the max-width: unset; rule, here: #9416 — there doesn't appear to be any conversation about why that was set to "unset". My instinct is that it was set to unset because themes usually explicitly set a max-width to 100%;, which could influence things.

But at the same time, the change feels totally resilient to me, testing with big and small images and video. Here's a friendly ping to @WordPress/gutenberg and if I don't hear anything in a couple of days, I'll and this!

@tellthemachines
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Might be good to get @joyously to verify, but I can't see any difference with this change. As I understood it, the intent of removing width: 100% from the image was to allow smaller sized images to display at their original size. As it is, it's very confusing that selecting "medium" in the image size dropdown does nothing but make the image slightly blurry 😕

@joyously
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joyously commented Feb 11, 2021

I revisited my original test post using WP 5.6.1 and the front end no longer shows the image overlapping text like in my original report. (tried with three different themes)
However, the small image is stretched and blurry, even with this "fix", because the width:100% is still there.
So I don't think that this is the solution to my issue.
I think perhaps the block styles should not style this image at all. The theme should have max and min widths set already. There is nothing special about this image in this block. Just make it so the correct image is inserted according to the selected size and let it be.

Edit: Be sure to use a small portrait image to test.

@jasmussen
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So it seems like the fix of the image overflowing on the frontend is no longer an issue. Is the issue then best described by the review in this PR, here? #28822 (review) — that is, small images are forced to fit the space?

In that review I suggested 3 paths forward. I suppose this PR applies option 3.

@draganescu
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To me this looks like a good default CSS for this particular block.

@joyously
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Yes, the issue is the small images being forced larger, but also matching editor and front end.
Your assessment focuses on experience when adding new images, but I found the issue when I looked at existing content that was blowing up my small image. So out of your 3 options, I would vote for number 2 (remove both max-width: unset and width:100%).

@tellthemachines
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I agree with pursuing option 2 for the reasons I explained here.

If we don't change the current behaviour, then we should remove the Image size setting because it makes no sense to have it if we're effectively unable to resize the image:

Screen Shot 2021-02-15 at 10 55 54 am

@jasmussen
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Good thoughts, all around.

If we don't change the current behaviour, then we should remove the Image size setting because it makes no sense to have it if we're effectively unable to resize the image:

I'm confused — the behavior currently being proposed would allow a small image to remain small, regardless of where you set the resize handle, right?

The way the block works now, is that the image is sized from the left edge to the resize handle by default, and the height is automatic. And when the toggle — fill entire column — is flipped, it's both 100% width and 100% height. Both of those seem like deliberate intentions of this block, both of which will regress if we remove the behavior, to the point that you might as well have used 2 columns with an image in one of them.

@tellthemachines
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If we don't change the current behaviour, then we should remove the Image size setting because it makes no sense to have it if we're effectively unable to resize the image:

I'm confused — the behavior currently being proposed would allow a small image to remain small, regardless of where you set the resize handle, right?

I mean we should remove the Image size select setting in the sidebar. Because unless we remove the width: 100%, changing the size to Medium or Thumbnail will only result in a blurry image, with no actual size change.

@jasmussen
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Thank you for the clarification.

@jasmussen
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I'm not sure how to move forward on this one, so going to close it for now. We can always revisit if there's value :)

@jasmussen jasmussen closed this Feb 22, 2021
@Copons Copons deleted the try/increased-specificity-cover-rule branch February 22, 2021 14:37
@tellthemachines
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Can we reopen #28822 then? As that PR would fix #17787. I'm confused as to why it was closed in the first place.

Or, if there really is strong opposition to removing width: 100%, then we should close #17787 as wontfix and then I'm happy to open a new issue to remove the Image size setting, because what we're providing currently is a broken experience.

@jasmussen
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These issues remain if we remove the width: #28822 (review). To an extent the conversation goes to the heart of the media & text block itself, because you could accomplish the layout using floats or columns instead. I see the key value being that the resize handle is a split between two types of content that scale to each.

@tellthemachines
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These issues remain if we remove the width

If we remove the width, we'll also have to set max-width: 100% to stop a larger image from blowing out beyond its place, but as for smaller images not occupying the whole image area, that's expected and more or less the whole point of removing the width.

To an extent the conversation goes to the heart of the media & text block itself, because you could accomplish the layout using floats or columns instead. I see the key value being that the resize handle is a split between two types of content that scale to each.

In that case, let's close #17787 as wontfix and remove the Image size setting instead. I'm happy with either solution, as long as we're all clear on how the block is meant to behave. If users can only change the ratio between image and text, then it doesn't make sense to allow them to pick an image size, as we can easily serve the correct image for a given ratio with our responsive image logic.

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Using width: 100% on img causes problems
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