Transform wheel – Gallery effect Banner

It is a ConvenientBanner library, which was written in ViewPager at the very beginning. If you want to put banner in the github library, it is best to put banner in the github library. If you want to put banner in the Github library, it is a ConvenientBanner library. The latest version is RecyclerView to write, we use the old version of ViewPager, talk less nonsense, do.

package com.example.administrator.custombanner.banner;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.support.annotation.NonNull;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

import java.security.MessageDigest;

public class CornersTransform extends BitmapTransformation {

    private static float radius = 0f;

    CornersTransform(Context context, int dp) {
        super(context);
        radius = Resources.getSystem().getDisplayMetrics().density * dp;
    }

    @Override
    protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
        return roundCrop(pool, toTransform);
    }

    private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {
        if (source == null) {
            return null;
        }

        Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(result);
        Paint paint = new Paint();
        paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
        paint.setAntiAlias(true);
        RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
        canvas.drawRoundRect(rectF, radius, radius, paint);
        return result;
    }

    @Override
    public void updateDiskCacheKey(@NonNull MessageDigest messageDigest) {

    }
}
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In fact, very simple hope to help beginners demo address: github.com/Bleach1/Cus…