SizeTagStyle.java

package what.whatandroid.comments.tags;

import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.RelativeSizeSpan;

/**
 * Handle site text size tags like [size={1,10}]
 */
public class SizeTagStyle implements TagStyle {
    @Override
    public Spannable getStyle(CharSequence param, CharSequence text) {
        SpannableString styled = new SpannableString(text);
        int size = Integer.parseInt(param.toString());
        if (size > 0 && size < 11) {
            styled.setSpan(new RelativeSizeSpan(1.f + (size - 2) * 0.2f), 0, styled.length(),
                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
        return styled;
    }
}