DimensUtils.java

package com.hannesdorfmann.mosby3.sample.mail.utils;

import android.content.Context;
import android.util.DisplayMetrics;

/**
 * This is a little util / helper class that converts pixels in dp values and
 * vice versa
 *
 * @author Hannes Dorfmann
 */
public class DimensUtils {

  /**
   * Converts a dp value to a px value
   *
   * @param context The context
   * @param dp the dp value
   * @return value in pixels
   */
  public static int dpToPx(Context context, float dp) {
    DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
    return (int) ((dp * displayMetrics.density) + 0.5);
  }

  /**
   * Converts pixel in dp
   *
   * @param context The context
   * @param px the pixel value
   * @return  value in dp
   */
  public static int pxToDp(Context context, int px) {
    DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics();
    return (int) ((px / displayMetrics.density) + 0.5);
  }

  /**
   * Convertes pixels to sp
   */
  public static float pxToSp(Context context, Float px) {
    float scaledDensity = context.getResources().getDisplayMetrics().scaledDensity;
    return px / scaledDensity;
  }
}