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sloop
2016-05-12 22:21:36 +08:00
parent 805c2aa774
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CustomView/Advance/[7]DrawText.md
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@@ -170,6 +170,8 @@ descent | + | 单个字符的最低点与基线距离的推荐值
bottom | + | 在指定字形和大小的情况下，字符最低点与基线之间的距离
leading | + | 行间距,当前行bottom与下一行top之间的距离的推荐值 (通常为0，因为top与ascent，bottom与leading之间的距离足够作为行间距了)
![](http://ww1.sinaimg.cn/large/005Xtdi2gw1f3syr8fbd1j30dw08c755.jpg)
看了上面啰啰嗦嗦讲了一堆，你可能会产生一些疑问，这里我简单解释一下：
0、 FontMetrics到底有什么用？