package com.hw.nativeapp.ui.widgets;

import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.squareup.picasso.Transformation;

public class CircleImageTransformer implements Transformation {

    @Override
    public Bitmap transform(Bitmap source) {
        //去图片宽高的最小值，变成正方形图片
        int size = Math.min(source.getWidth(),source.getHeight());

        Bitmap bitmap = Bitmap.createBitmap(size,size,source.getConfig());
        Canvas canvas = new Canvas(bitmap);
        Paint paint = new Paint();

        BitmapShader shader = new BitmapShader(source,BitmapShader.TileMode.CLAMP,BitmapShader.TileMode.CLAMP);
        paint.setShader(shader);
        paint.setAntiAlias(true);

        float r = size / 2f;
        canvas.drawCircle(r,r,r,paint);
        source.recycle();
        return bitmap;
    }

    @Override
    public String key() {
        return "Circle-Image";
    }
}
