calculate the y offset for aligning text vertically in its containing Sprite on Canvas - Android Graphics

Android examples for Graphics:Canvas

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Description

calculate the y offset for aligning text vertically in its containing Sprite on Canvas

Demo Code

/**/*from ww  w .  j a v  a2 s  . c  o m*/
 * The MIT License (MIT)
 *
 * Copyright (c) 2012-2014 Igor Zinken - http://www.igorski.nl
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
//package com.java2s;
import android.graphics.Paint;
import android.graphics.Rect;

public class Main {
    /**
     * convenience method to calculate the y offset for aligning
     * text vertically in its containing Sprite
     *
     * @param {int} yPos y-coordinate of the Sprite / "container" holding the text
     * @param {int} spriteHeight height of the Sprite / "container" holding the text
     * @param {String} text to render
     * @param {Paint} textPaint the Paint used to render the text
     *
     * @return {int} the y coordinate for drawing the text
     */
    public static int alignTextVertically(int yPos, int spriteHeight,
            String text, Paint textPaint) {
        final Rect bounds = new Rect();
        textPaint.getTextBounds(text, 0, text.length(), bounds);

        return yPos + (spriteHeight / 2) + (bounds.height() / 2);
    }
}

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