# compose

I was looking through some Compose widgets, and couldn't find where they are literally drawing their contents, is there a good example some where? Does it boil down to a canvas object at some point?

yes, compose draws straight to Canvas using Skia

Yes, go down the source code and you'll eventually get to Canvas composables

great, thanks

Skia everywhere! https://kotlinlang.slack.com/archives/C01D6HTPATV/p1642708915197100

Modifier.drawBehind etc is the most typical in-app usage

Anyway, you won't find anything related to Skia or (platform) Canvas in any of the common directories. To find it you'll need too look in Foo.android.kt files

The Canvas composables will be in the common directories though

https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:compose/material3/material3/src/commonMain/kotlin/androidx/compose/material3/Checkbox.kt;l=317 like this one

awesome, thanks for the info! I feel much more comfortable with things when I see how they work all the way down to the pixels 😛

write up a blog post. id read about it. 😄