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import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import com.squareup.picasso.Transformation;
public class CircleTransform implements Transformation {
private final int radius;
private final int margin; // dp
// radius is corner radii in dp
// margin is the board in dp
public CircleTransform(final int radius, final int margin) {
this.radius = radius;
this.margin = margin;
}
@Override
public Bitmap transform(final Bitmap source) {
final Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(new BitmapShader(source, Shader.TileMode.CLAMP,
Shader.TileMode.CLAMP));
Bitmap output = Bitmap.createBitmap(source.getWidth(),
source.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
canvas.drawRoundRect(new RectF(margin, margin, source.getWidth()
- margin, source.getHeight() - margin), radius, radius, paint);
if (source != output) {
source.recycle();
}
return output;
}
@Override
public String key() {
return "rounded";
}
}
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