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