EmojiSpan.java 文件源码

@Override
public int getSize(Paint paint, CharSequence text, int start, int end,
        FontMetricsInt fm) {
    if (fm != null && this.fm != null) {
        fm.ascent = this.fm.ascent;
        fm.descent = this.fm.descent;
        fm.top = this.fm.top;
        fm.bottom = this.fm.bottom;
        return size;
    } else {
        return super.getSize(paint, text, start, end, fm);
    }
}