detectDragGesture is unusable on Desktop

[LAP2]

Hi folks.

Found one interesting thing.
If you try to use detectDragGesture in pointerInput it wouldn't work on desktop cause of huge value of touchSlop configured in androidx.compose.ui.platform.DesktopViewConfiguration.

Every time i had try to drag something i run into awaitTouchSlopOrCancellation and then check if (distance >= touchSlop) allways fail cause distance (1~3) is allways less then value of touchSlop (its 18).

[igordmn]

Thanks for the report!

Temporary solution - wrap top-level composable to this:

Window {
    WithoutTouchSlop {
        App()
    }
}

@Composable
private fun WithoutTouchSlop(content: @Composable () -> Unit) {
    fun ViewConfiguration.withoutTouchSlop() = object : ViewConfiguration {
        override val longPressTimeoutMillis get() =
            [email protected]

        override val doubleTapTimeoutMillis get() =
            [email protected]

        override val doubleTapMinTimeMillis get() =
            [email protected]

        override val touchSlop: Float get() = 0f
    }

    Providers(
        LocalViewConfiguration provides LocalViewConfiguration.current.withoutTouchSlop()
    ) {
        content()
    }
}

P.S. Touch slop should be available with touch screens on desktop, and on android there should be not touch slop if we use mouse.

So the temporary solution should be removed from the client code once the issue will be resolved.

[06000000-0000]

Hi

[LAP2]

Update, possibly we should use CompositionLocalProvider cause Provider is unavailable

[Jakobeha]

This seems to work now on my windows PC. Does anyone still have the issue?

[igordmn]

It should be fixed, yes

[okushnikov]

Please check the following ticket on YouTrack for follow-ups to this issue. GitHub issues will be closed in the coming weeks.