commonMain.scheme.SchemeExpressive.kt Maven / Gradle / Ivy

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/*
 * Copyright (c) 2024, Google LLC, OpenSavvy and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package opensavvy.material3.colors.scheme

import opensavvy.material3.colors.dynamiccolor.DynamicScheme
import opensavvy.material3.colors.dynamiccolor.Variant
import opensavvy.material3.colors.hct.Hct
import opensavvy.material3.colors.palettes.TonalPalette
import opensavvy.material3.colors.utils.sanitizeDegreesDouble

/** A playful theme - the source color's hue does not appear in the theme.  */
class SchemeExpressive(sourceColorHct: Hct, isDark: Boolean, contrastLevel: Double) : DynamicScheme(
	sourceColorHct = sourceColorHct,
	variant = Variant.EXPRESSIVE,
	isDark = isDark,
	contrastLevel = contrastLevel,
	primaryPalette = TonalPalette.fromHueAndChroma(
		sanitizeDegreesDouble(sourceColorHct.hue + 240.0), 40.0),
	secondaryPalette = TonalPalette.fromHueAndChroma(
		getRotatedHue(sourceColorHct, HUES, SECONDARY_ROTATIONS), 24.0),
	tertiaryPalette = TonalPalette.fromHueAndChroma(
		getRotatedHue(sourceColorHct, HUES, TERTIARY_ROTATIONS), 32.0),
	neutralPalette = TonalPalette.fromHueAndChroma(
		sanitizeDegreesDouble(sourceColorHct.hue + 15.0), 8.0),
	neutralVariantPalette = TonalPalette.fromHueAndChroma(
		sanitizeDegreesDouble(sourceColorHct.hue + 15.0), 12.0)) {
	companion object {
		// NOMUTANTS--arbitrary increments/decrements, correctly, still passes tests.
		private val HUES = doubleArrayOf(0.0, 21.0, 51.0, 121.0, 151.0, 191.0, 271.0, 321.0, 360.0)
		private val SECONDARY_ROTATIONS = doubleArrayOf(45.0, 95.0, 45.0, 20.0, 45.0, 90.0, 45.0, 45.0, 45.0)
		private val TERTIARY_ROTATIONS = doubleArrayOf(120.0, 120.0, 20.0, 45.0, 20.0, 15.0, 20.0, 120.0, 120.0)
	}
}