briar/briar-android/src/im/delight/android/identicons/IdenticonDrawable.java

package im.delight.android.identicons;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.Log;

import org.briarproject.api.crypto.CryptoComponent;

/**
 * Created by saiimons on 05/10/14.
 */
public class IdenticonDrawable extends Drawable {
    private IdenticonBase mDelegate;

    private static final int CENTER_COLUMN_INDEX = 3;

    public IdenticonDrawable(final CryptoComponent crypto, byte[] toShow) {
        super();
        mDelegate = new IdenticonBase() {
            @Override
            protected CryptoComponent getCrypto() {
                return crypto;
            }

            @Override
            protected int getRowCount() {
                return 5;
            }

            @Override
            protected int getColumnCount() {
                return 5;
            }

            @Override
            protected boolean isCellVisible(int row, int column) {
                return getByte(3 + row * CENTER_COLUMN_INDEX + getSymmetricColumnIndex(column)) >= 0;
            }

            @Override
            protected int getIconColor() {
                return Color.rgb(getByte(0) + 128, getByte(1) + 128, getByte(2) + 128);
            }
        };
        mDelegate.show(toShow);
    }

    @Override
    public void setBounds(Rect bounds) {
        super.setBounds(bounds);
        Log.d("IDENTICON", "SIZE : " + (bounds.right - bounds.left) + " " + (bounds.bottom - bounds.top));
        mDelegate.updateSize(bounds.right - bounds.left, bounds.bottom - bounds.top);
    }

    @Override
    public void setBounds(int left, int top, int right, int bottom) {
        super.setBounds(left, top, right, bottom);
        mDelegate.updateSize(right - left, bottom - top);
    }

    @Override
    public void draw(Canvas canvas) {
        Log.d("IDENTICON", "DRAW IN PROGRESS");
        mDelegate.draw(canvas);
    }

    @Override
    public void setAlpha(int alpha) {

    }

    @Override
    public void setColorFilter(ColorFilter cf) {

    }

    @Override
    public int getOpacity() {
        return 0;
    }

    protected int getSymmetricColumnIndex(int row) {
        if (row < CENTER_COLUMN_INDEX) {
            return row;
        } else {
            return mDelegate.getColumnCount() - row - 1;
        }
    }
}