Is there any way to override the default alpha va...

# compose

[Utkarsh Tiwari]

Is there any way to override the default alpha value of ripple across my app?

[Utkarsh Tiwari]

I have created a custom theme like this:

@Composable
fun DsTheme(
    colors: DsColorPalette = dsLightColorPalette(),
    typography: Typography = dsTypography(),
    content: @Composable () -> Unit
) {
    CompositionLocalProvider(
        LocalDsColor provides colors,
        LocalRippleTheme provides object : RippleTheme {
            @Composable
            override fun defaultColor(): Color = LocalRippleTheme.current.defaultColor()

            @Composable
            override fun rippleAlpha(): RippleAlpha = RippleAlpha(
                pressedAlpha = 1f,
                focusedAlpha = 1f,
                draggedAlpha = 1f,
                hoveredAlpha = 1f
            )
        }
    ) {
        content()
    }
}

[Utkarsh Tiwari]

But it doesn’t seem to have any effect on the alpha value of ripple.

The ripples are still very light in color due to very low alpha values pre-defined by Material side.

[Louis Pullen-Freilich [G]]

The framework by default caps the max alpha at 0.5:

issuetracker.google.com/issues/201308665

So there isn’t really much we can do from the Compose side - presumably the alpha is correctly being applied here, but it is just being capped to 50%

[Utkarsh Tiwari]

Thank you Louis for the clarification.

[Utkarsh Tiwari]

So basically, there is nothing I could do to change the alpha, right?

[Louis Pullen-Freilich [G]]

Unfortunately, yes

[Louis Pullen-Freilich [G]]

Not above 0.5f anyway