/*
 * Copyright 2021 Google LLC
 *
 * 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.
 *
 * ---------------------------------------------------------------------
 *
 * Portions of this file were modified and ported to Vala by Victor Vintorez in 2026.
 * These modifications are licensed under the European Union Public License (EUPL),
 * Version 1.2 or later. You may obtain a copy of the License at:
 * https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12
 */

using GLib;

namespace MaterialColorUtilities {
	/**
	 * Describes the relationship in lightness between two colors.
	 *
	 * <p>'relative_darker' and 'relative_lighter' describes the tone adjustment relative to the surface
	 * color trend (white in light mode; black in dark mode). For instance, ToneDeltaPair(A, B, 10,
	 * 'relative_lighter', 'farther') states that A should be at least 10 lighter than B in light mode,
	 * and at least 10 darker than B in dark mode.
	 *
	 * <p>See `ToneDeltaPair` for details.
	 */
	public enum TonePolarity {
		DARKER,
		LIGHTER,
		RELATIVE_DARKER,
		RELATIVE_LIGHTER,
		/**
		 * @deprecated Use {@link ToneDeltaPair.DeltaConstraint} instead.
		 */
		NEARER,
		/**
		 * @deprecated Use {@link ToneDeltaPair.DeltaConstraint} instead.
		 */
		FARTHER
	}
}
