Android text justify

JustifyTextView.java

import android.content.Context;
import android.graphics.Canvas;
import android.text.Layout;
import android.text.StaticLayout;
import android.util.AttributeSet;
import android.widget.TextView;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class JustifyTextView extends TextView {

    private static final Pattern BLANKS = Pattern.compile("\\s+");

    public JustifyTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        getPaint().setColor(getCurrentTextColor());
        getPaint().drawableState = getDrawableState();
        int lineY = getPaddingTop();
        lineY += 2 + getLineHeight() / 2; //FIXME
        Layout layout = getLayout();
        for (int i = 0; i < layout.getLineCount(); i++) {
            int lineStart = layout.getLineStart(i);
            int lineEnd = layout.getLineEnd(i);
            CharSequence line = getText().subSequence(lineStart, lineEnd);

            if (line.length() != 0 && i < layout.getLineCount() - 1) {
                float lineWidth = StaticLayout.getDesiredWidth(line, getPaint());
                int viewWidth = getMeasuredWidth() - (getPaddingLeft() + getPaddingRight());
                drawScaledText(canvas, line, lineY, lineWidth, viewWidth);
            } else {
                canvas.drawText(line.toString(), getPaddingLeft(), lineY, getPaint());
            }

            lineY += getLineHeight();
        }
    }

    private void drawScaledText(Canvas canvas, CharSequence line, int lineY, float lineWidth, int viewWidth) {
        float x = getPaddingLeft();
        Matcher matcher = BLANKS.matcher(line);
        if (matcher.find() && matcher.start() == 0) {
            String blanks = matcher.group();
            canvas.drawText(blanks, x, lineY, getPaint());
            float bw = StaticLayout.getDesiredWidth(blanks, getPaint());
            x += bw;

            line = line.subSequence(matcher.end(), line.length());
        }

        float d = (viewWidth - lineWidth) / (line.length() - 1);
        for (int i = 0; i < line.length(); i++) {
            String c = String.valueOf(line.charAt(i));
            float cw = StaticLayout.getDesiredWidth(c, getPaint());
            canvas.drawText(c, x, lineY, getPaint());
            x += cw + d;
        }
    }

}