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keep the accent blobs dimmer than the primary button

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austinried
2026-10-04 00:29:53 +00:00
parent 7303e23d62
commit e8e2c38aaa
3 changed files with 50 additions and 2 deletions
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app/src/main/kotlin/com/subtracks/ui/theme/ArtworkTheme.kt
+16 -2
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@@ -35,7 +35,8 @@ private const val SEED_ART_SIZE_PX = 128
private const val PERIOD_SCREENS = 2f
private const val BLOB_ZONE = 0.62f
private const val BLOB_COUNT = 4
private const val ACCENT_MAX_LUMINANCE = 0.34f
private const val ACCENT_MAX_LUMINANCE = 0.18f
private const val PRIMARY_MIN_LUMINANCE = 0.30f
private const val MIN_GRADIENT_SATURATION = 0.30f
private const val HERO_DARKEN_MAX = 1.0f
private const val DARKEN_START_SCREENS = 0.5f
@@ -66,7 +67,7 @@ fun artworkColorsFromSeeds(
l: Float,
) = Color.hsl(h % 360f, sat.coerceIn(0f, 1f), l.coerceIn(0f, 1f))
val primary = tone(hue, s, 0.62f)
val primary = tone(hue, s, 0.62f).withMinLuminance(PRIMARY_MIN_LUMINANCE)
val background = tone(hue, (s * 0.35f).coerceAtMost(0.20f), 0.06f)
val onBackground = tone(hue, (s * 0.10f).coerceAtMost(0.08f), 0.95f)
@@ -138,6 +139,19 @@ private fun Color.withMaxLuminance(max: Float): Color {
return color
}
private fun Color.withMinLuminance(min: Float): Color {
if (luminance() >= min) return this
val (h, s, initial) = toHsl()
var lightness = initial
var color = this
var guard = 0
while (color.luminance() < min && guard++ < 40) {
lightness = (lightness + 0.02f).coerceAtMost(0.95f)
color = Color.hsl(h, s, lightness)
}
return color
}
fun ArtworkColors.gradientColorAt(fraction: Float): Color {
if (fraction.isNaN()) return gradientHigh
val f = fraction.mod(1f)