/*  _____ _
 * |_   _| |_  _ _ ___ ___ _ __  __ _
 *   | | | ' \| '_/ -_) -_) '  \/ _` |_
 *   |_| |_||_|_| \___\___|_|_|_\__,_(_)
 *
 * Threema for Android
 * Copyright (c) 2014-2020 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.ui;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.Gravity;

import androidx.appcompat.widget.AppCompatTextView;

public class VerticalTextView extends AppCompatTextView {
	final boolean topDown;

	public VerticalTextView(Context context,
	                        AttributeSet attrs) {
		super(context, attrs);
		final int gravity = getGravity();
		if (Gravity.isVertical(gravity) && (gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
			setGravity( (gravity & Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP );
			topDown = false;
		} else {
			topDown = true;
		}
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(heightMeasureSpec, widthMeasureSpec);
		setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
	}

	@Override
	protected void onDraw(Canvas canvas) {
		if (topDown) {
			canvas.translate(getWidth(), 0);
			canvas.rotate(90);
		} else {
			canvas.translate(0, getHeight());
			canvas.rotate(-90);
		}

		canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());
		getLayout().draw(canvas);
	}
}

