SimpleTextCacheStuffer.java 文件源码

protected Float getCacheHeight(BaseDanmaku danmaku, Paint paint) {
    Float textSize = Float.valueOf(paint.getTextSize());
    Float textHeight = (Float) sTextHeightCache.get(textSize);
    if (textHeight != null) {
        return textHeight;
    }
    FontMetrics fontMetrics = paint.getFontMetrics();
    textHeight = Float.valueOf((fontMetrics.descent - fontMetrics.ascent) + fontMetrics.leading);
    sTextHeightCache.put(textSize, textHeight);
    return textHeight;
}