Save a screenshot of the current layout

[marcosgriselli]

We could add a 'take screenshot' button that generates a UIImage from the containedView and displays the share sheet so we can save/share the image of the current layout in full size.

Ideally, we can let users select if they want to place a label with the current device/orientation/font size on the generated image though this is not a priority.

Current situation when taking a screenshot when using Sizes on an iPad testing small phones layouts:

[gtrunso]

I'm taking care of it

[marcosgriselli]

Great @gtrunso, I'll assign you the issue 🙂

[csknns]

I have implemented this! Did not see @gtrunso comment, sorry.(Github has technical issues and did not let yesterday to fork the repo to submit a pull request)
Would you like a pull request to review it, or should I scrap it?

[marcosgriselli]

Hey @csknns thanks for working on this! @gtrunso wasn't able to send the PR yesterday due to the GitHub issues. I think this is a great opportunity for both of you to work together since this functionality will require a bit of extra work to be perfect. Also, I recommend we wait until the issues with GitHub are solved since is messing up with the workflows.

[marcosgriselli]

I'd avoid pushing new branches or sending PRs. @csknns I just got an email from a PR of yours but it's not showing up on GitHub for me so let's wait until GitHub is working properly to work on this.

[csknns]

@marcosgriselli I agree, I will close the PR for now and wait until Github reports everything is back to normal.
It will be a great to collaborate with @gtrunso on this issue!

[jbuchman]

Please make sure that the screenshots are at the native resolution of the view as opposed to the resolution of the device. I had implemented something similar for my use case, but found that if I screenshot the SizesWindow or SizesViewController's views I ended up with a screenshot at the device's resolution instead of the resolution of the simulated size...

[marcosgriselli]

Yeah, we'll be tweaking this to make it perfect.

[marcosgriselli]

Added functionality on #29