Add Hugging and CompressionResistance Please

[iStarEternal]

I want to add hugging constraint to a view now, but it is not elegant code to write so

[self.footTitleSignBackgroundView mas_makeConstraints:^(MASConstraintMaker *make) {
    make.left.equalTo(self.footView);
    make.centerY.equalTo(self.footView.mas_centerY).offset(0);
}];
[self.footTitleSignBackgroundView setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
[self.footTitleSignBackgroundView setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];

I think you should add this syntax into Masonry

make.horizontal.huggingRequired()
make.horizontal.huggingHigh()
make.horizontal.huggingFittingSizeLevel()
make.horizontal.huggingLow()
make.vertical...
make.horizontal.compressionResistance...
make.vertical.compressionResistance...

[robertjpayne]

Happy to accept a well proposed PR for this but otherwise as per the readme we're currently focusing any feature development exclusively into SnapKit.

[iStarEternal]

Is really a terrible news, I hope you can combined with the above in SnapKit

[robertjpayne]

@iStarEternal it's not really terrible news, it's pretty much just me maintaining the two repositories now and I just don't have enough time. Neither project is financially sponsored so I can't just take time off to work on both.

[iStarEternal]

Sorry for my grammar, my English is not very good. Hope that you can understand what I had written.
Thanks for your SnapKit & Masonry. It makes the code is simple, easy to read and elegant. This popularity in China. You are a great Programmer. ;-)

[iStarEternal]

@robertjpayne
Do you remember me?
I fix my issues, It's non destructive.
You can use it like so:
[button makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(100);
make.top.equalTo(100);
make.hugging.priorityRequired();
make.hugging.vertical.priorityRequired();
make.hugging.horizontal.priorityRequired();
make.compression.priorityRequired();
make.compression.vertical.priorityRequired();
make.compression.horizontal.priorityRequired();
make.vertical.hugging.priorityRequired();
make.vertical.compression.priorityRequired();
make.horizontal.hugging.priorityRequired();
make.horizontal.compression.priorityRequired();
}];
@nickynick @cloudkite
Solution: MASForbearance.zip

[iStarEternal]

If it helps, please add it to Masonry

[adubr]

Hey @robertjpayne,

I'd like to contribute to this issue and prepare a nice and clean PR. But first I'd like to discuss syntax, logic and probable caveats of the feature.

Some of the discussion was started at #88, and @nickynick with @cloudkite pointed out that hugging and compression resistance are somehow out of Mansonry semantics, which is kind of true. On the other hand as far as I know there are underlying constraints to support these properties, though they aren't available to the user directly. I suppose there could be a workaround, like storing the hugging and compression resistance values in an instance of a specialized subclass of MASConstraint and applying/rolling them back when appropriate (i.e. install and uninstall methods). How does it sound to you?

And what syntax looks good? The one suggested by @iStarEternal or the one from #88?

[iStarEternal]

@adubr Nice to meet you! you can download my solution: MASForbearance.zip and try to use it.
I think it can perfectly solve my problem, I wish it could help you.

[robertjpayne]

@adubr @iStarEternal it's an interesting feature, I think in some ways @cloudkite is right that semantically it doesn't make much sense to stuff these into the maker API.

One could say that a shortcut API would be beneficial, and it's what I've done in the Swift version.

view.mas_contentCompressionResistanceVerticalPriority = 50.0

The benefit here is getting rid of the method call and making it just a dynamic property.