package com.github.jdsjlzx.progressindicator.indicators;
import android.animation.ValueAnimator;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import com.github.jdsjlzx.progressindicator.Indicator;
import java.util.ArrayList;
/**
* Created by Jack on 2015/10/19.
*/
public class LineScaleIndicator extends Indicator {
public static final float SCALE=1.0f;
float[] scaleYFloats=new float[]{SCALE,
SCALE,
SCALE,
SCALE,
SCALE,};
@Override
public void draw(Canvas canvas, Paint paint) {
float translateX=getWidth()/11;
float translateY=getHeight()/2;
for (int i = 0; i < 5; i++) {
canvas.save();
canvas.translate((2 + i * 2) * translateX - translateX / 2, translateY);
canvas.scale(SCALE, scaleYFloats[i]);
RectF rectF=new RectF(-translateX/2,-getHeight()/2.5f,translateX/2,getHeight()/2.5f);
canvas.drawRoundRect(rectF, 5, 5, paint);
canvas.restore();
}
}
@Override
public ArrayList<ValueAnimator> onCreateAnimators() {
ArrayList<ValueAnimator> animators=new ArrayList<>();
long[] delays=new long[]{100,200,300,400,500};
for (int i = 0; i < 5; i++) {
final int index=i;
ValueAnimator scaleAnim= ValueAnimator.ofFloat(1, 0.4f, 1);
scaleAnim.setDuration(1000);
scaleAnim.setRepeatCount(-1);
scaleAnim.setStartDelay(delays[i]);
addUpdateListener(scaleAnim,new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
scaleYFloats[index] = (float) animation.getAnimatedValue();
postInvalidate();
}
});
animators.add(scaleAnim);
}
return animators;
}
}