I am wondering why's everyone going after testing this week :laughing:

# compose-desktop

[theapache64]

I am wondering why's everyone going after testing this week 😆

[Colton Idle]

Released to production last week... time to start testing this week. 😂

[TheMrCodes]

Just wanted to take a screenshot and it seems to be impossible outside of testing so I lookt into its implementation 🤷‍♂️😂

[Igor Demin]

Just wanted to take a screenshot

You can use TestComposeWindow 🙂

val window = TestComposeWindow(width = 1024, height = 768)

window.setContent {

}

File(path).writeBytes(window.surface.makeImageSnapshot().encodeToData()!!.bytes)

[Igor Demin]

It has some bugs, so it is better to use it inside SwingUtilities.invokeLater. We will fix this in this issue

[TheMrCodes]

Thanks @Igor Demin for this very clear example 🙏 Would be really cool if this would find its way into the test documentation and if not I will personally create a pull request for it ^^

Additional question: Can we just create an skia surface, print our components to it and take a screenshot from that? (without creating a whole window)

[Igor Demin]

Would be really cool if this would find its way into the test documentation

Very good idea, thanks 🙂
https://github.com/JetBrains/compose-jb/issues/368#issuecomment-811166809

skia surface, print our components to it and take a screenshot from that? (without creating a whole window)

TestComposeWindow does exactly that. It doesn't create a whole window.

[TheMrCodes]

Very cool 👍
ok sorry for misinterpreting the class name I will try it asap.
Thanks 😁

[Igor Demin]

SwingUtilities.invokeLater is needed because we don't properly handle mutableStateOf observations in other threads than Swing thread.