Useful Fluent composables for Compose Desktop

FluentBorderStroke.kt

/*
 * Copyright © 2023 Alex Facciorusso
 *
 * Licensed under MIT The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the “Software”), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import androidx.compose.foundation.BorderStroke
import androidx.compose.material3.MaterialTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.ReadOnlyComposable
import androidx.compose.ui.unit.Dp

@Composable
@ReadOnlyComposable
fun fluentSurfaceBorderStroke() = BorderStroke(
    Dp.Hairline,
    MaterialTheme.colorScheme.onSurface.copy(alpha = .1f)
)

FluentMaterialTheme.kt

/*
 * Copyright © 2023 Alex Facciorusso
 *
 * Licensed under MIT The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the “Software”), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.runtime.ReadOnlyComposable
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.luminance
import com.github.composenativelook.isSystemInDarkTheme


fun fluentLightColorScheme() = lightColorScheme(
    surface = Color.White.copy(alpha = .60f),
    surfaceTint = Color.White,
)

fun fluentDarkColorScheme() = darkColorScheme(
    surface = Color.Transparent,
    surfaceTint = Color.White,
)

@Composable
fun FluentMaterialTheme(
    lightColorScheme: ColorScheme = fluentLightColorScheme(),
    darkColorScheme: ColorScheme = fluentDarkColorScheme(),
    overrideIsDark: Boolean? = null,
    content: @Composable () -> Unit,
) {
    val isDark = overrideIsDark ?: isSystemInDarkTheme()

    val colorScheme = if (isDark) darkColorScheme else lightColorScheme

    MaterialTheme(
        colorScheme = colorScheme,
    ) {
        content()
    }
}

@Composable
@ReadOnlyComposable
fun MaterialTheme.isDark() = colorScheme.background.luminance() <= 0.179

FluentSurface.kt

/*
 * Copyright © 2023 Alex Facciorusso
 *
 * Licensed under MIT The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the “Software”), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import androidx.compose.foundation.BorderStroke
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.Shape
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp

enum class FluentSurfaceLevel(internal val elevationValue: Dp) {
    Background(0.dp),
    Level1(1.dp),
    Level2(16.dp),
    ;
}

@Composable
fun fluentBorderForSection() = if (MaterialTheme.isDark()) null else fluentSurfaceBorderStroke()

@Composable
fun FluentSurface(
    surfaceLevel: FluentSurfaceLevel = FluentSurfaceLevel.Level1,
    border: BorderStroke? = null,
    shape: Shape = MaterialTheme.shapes.small,
    content: @Composable () -> Unit,
) {
    Surface(
        tonalElevation = surfaceLevel.elevationValue,
        color = if (surfaceLevel == FluentSurfaceLevel.Background) Color.Transparent else MaterialTheme.colorScheme.surface,
        border = border,
        shape = shape,

        content = content
    )
}