Alternate capture method

[yschimke]

Could Capturable use this alpha API to capture the image instead of an AndroidView?

https://cs.android.com/androidx/platform/frameworks/support/+/f60a1149f00d6cc5972e9bd4057eb4a15505b468:compose/ui/ui-graphics/samples/src/main/java/androidx/compose/ui/graphics/samples/DrawScopeSample.kt;l=131

[PatilShreyas]

In Compose, drawWithCache() is used for drawing on the canvas of compose. i.e. you can draw text, lines, shapes, etc.
Refer: https://developer.android.com/jetpack/compose/graphics/draw/modifiers

[yschimke]

The API works with other forms, I thought it should be possible

The retargeting feature can be used to capture a composable as a bitmap yes

https://slack-chats.kotlinlang.org/t/12321887/how-can-i-get-bitmap-from-composable-function#b2205524-3250-4505-9332-0fd2741aee8b

[PatilShreyas]

Oh great, thanks for the good reference. Will definitely take a look into this

[yschimke]

This is where I got to. https://gist.github.com/yschimke/2cbbf4e1fe2354beb10ce2e83216f7e3

Just using retargeting in drawWithCache to an alternative canvas. Unfortunately it's still limited by the current screen. So not properly working. Not sure if this actually an improvement.

    val finalSize = DpSize(227.dp, 227.dp)
    SavedPicture(
        size = finalSize,
        onPicture = { lastPicture = SavedPicture(lastPicture.i + 1, it) },
        pictureTrigger = pictureTrigger,
    ) {
        Box(
            modifier = Modifier
                .fillMaxSize()
                .background(Color.DarkGray),
            contentAlignment = Alignment.Center
        ) {
            Text("Snapped\n" + LocalTime.now().withNano(0))
        }
    }

Screen_recording_20240317_142522.mp4

[PatilShreyas]

Current API has no support for that.

[yschimke]

I'll try with https://cs.android.com/androidx/platform/frameworks/support/+/fa28b73fb1bcba009b460aa0a46613ad2a41d9ed

[yschimke]

This would allow using outside a Composition

https://slack-chats.kotlinlang.org/t/18809650/compose-1-7-0-introduces-remembergraphicslayer-which-looks-l