SmoothProgressBarUtils.java

package codetail.widget;

import android.graphics.drawable.Drawable;
import android.graphics.drawable.ShapeDrawable;

/**
 * Created by castorflex on 3/5/14.
 */
public final class SmoothProgressBarUtils {
  private SmoothProgressBarUtils() {
  }

  public static Drawable generateDrawableWithColors(int[] colors, float strokeWidth) {
    if (colors == null || colors.length == 0) return null;

    return new ShapeDrawable(new ColorsShape(strokeWidth, colors));
  }

  static void checkSpeed(float speed) {
    if (speed <= 0f)
      throw new IllegalArgumentException("Speed must be >= 0");
  }

  static void checkColors(int[] colors) {
    if (colors == null || colors.length == 0)
      throw new IllegalArgumentException("You must provide at least 1 color");
  }

  static void checkAngle(int angle) {
    if (angle < 0 || angle > 360)
      throw new IllegalArgumentException(String.format("Illegal angle %d: must be >=0 and <= 360", angle));
  }

  static void checkPositiveOrZero(float number, String name) {
    if (number < 0)
      throw new IllegalArgumentException(String.format("%s %d must be positive", name, number));
  }

  static void checkPositive(int number, String name){
    if(number <= 0)
      throw new IllegalArgumentException(String.format("%s must not be null", name));
  }

  static void checkNotNull(Object o, String name) {
    if (o == null)
      throw new IllegalArgumentException(String.format("%s must be not null", name));
  }
}