/*  _____ _
 * |_   _| |_  _ _ ___ ___ _ __  __ _
 *   | | | ' \| '_/ -_) -_) '  \/ _` |_
 *   |_| |_||_|_| \___\___|_|_|_\__,_(_)
 *
 * Threema for Android
 * Copyright (c) 2022-2023 Threema GmbH
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

package ch.threema.app.adapters.decorators

import android.graphics.Rect
import android.view.View
import androidx.recyclerview.widget.RecyclerView

/**
 * A decoration that adds a margin to RecyclerView items.
 *
 * This decorator can be used for RecyclerViews that uses a GridLayoutManager or LinearLayoutManager
 * with vertical orientation.
 */
class VerticalGridLayoutGutterDecoration(gutterPx: Int) : RecyclerView.ItemDecoration() {
	private val gutterPx = gutterPx / 2
	override fun getItemOffsets(
		outRect: Rect,
		view: View,
		parent: RecyclerView,
		state: RecyclerView.State
	) {
		outRect.top = gutterPx
		outRect.left = gutterPx
		outRect.right = gutterPx
		outRect.bottom = gutterPx
	}
}
