Created
May 25, 2017 22:14
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import android.content.Context; | |
import android.graphics.Bitmap; | |
import android.graphics.BitmapShader; | |
import android.graphics.Canvas; | |
import android.graphics.Paint; | |
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool; | |
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation; | |
/** | |
* Created by hackro on 8/04/17. | |
*/ | |
public class CircleTransform extends BitmapTransformation { | |
public CircleTransform(Context context) { | |
super(context); | |
} | |
@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) { | |
return circleCrop(pool, toTransform); | |
} | |
private static Bitmap circleCrop(BitmapPool pool, Bitmap source) { | |
if (source == null) return null; | |
int size = Math.min(source.getWidth(), source.getHeight()); | |
int x = (source.getWidth() - size) / 2; | |
int y = (source.getHeight() - size) / 2; | |
// TODO this could be acquired from the pool too | |
Bitmap squared = Bitmap.createBitmap(source, x, y, size, size); | |
Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888); | |
if (result == null) { | |
result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888); | |
} | |
Canvas canvas = new Canvas(result); | |
Paint paint = new Paint(); | |
paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP)); | |
paint.setAntiAlias(true); | |
float r = size / 2f; | |
canvas.drawCircle(r, r, r, paint); | |
return result; | |
} | |
@Override public String getId() { | |
return getClass().getName(); | |
} | |
} |
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