gistfile1.txt

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.util.AttributeSet;
import android.widget.ImageView;

public class ProfileImageView extends ImageView {

    private Matrix matrix = null;

    public ProfileImageView(Context context) {
        this(context, null, 0);
    }

    public ProfileImageView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public ProfileImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        matrix = null;
        invalidate();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        if (matrix == null) {
            matrix = new Matrix();
            float sx = (getMeasuredWidth() / (float)getDrawable().getIntrinsicWidth());
            matrix.setScale(sx, sx);
            setImageMatrix(matrix);
        }

        canvas.setMatrix(matrix);
        canvas.save();
        canvas.translate(0, -getMeasuredHeight()/2);
        getDrawable().draw(canvas);
        canvas.restore();
        canvas.drawColor(0x880088ff);
    }
}