找到字体真实边界的最佳方法
我正在寻找一种方法来查找渲染文本的边界，并遇到了 FontMetrics getStringBounds 方法。这似乎忽略了某些字体的下降并具有夸张的上升，因此它返回的边界不允许我正确垂直对齐。我更深入地挖掘了一下，发现 GlyphVector.getPixelBounds() 似乎可以做我想做的事情，但我不知道使用它是否会出现一些问题。
我写了一个小程序 http://breadmilkbeer香烟.com/bmbc /shelves/users/bbb/src/java/applet/glyphvector.html 显示两者之间的差异，似乎适合我的系统字体它返回正确的边界。有谁知道这是否是一种昂贵的方法，或者使用它是否存在其他可能的陷阱？ FontMetrics 似乎从来没有对我正常工作过。或者也许我对它的期望是错误的。
谢谢， 血脑屏障
I was looking for a way to find the bounds on rendered text and encountered the FontMetrics getStringBounds method. This seems to ignore some font's descent and has an exaggerated ascent so that it returns a bounds that doesn't let me align vertically properly. I dug a bit deeper and found that GlyphVector.getPixelBounds() SEEMS to do what I want, but I don't know if there might be some problems with using it.
I wrote an applet http://breadmilkbeercigarettes.com/bmbc/shelves/users/bbb/src/java/applet/glyphvector.html that displays the difference between the two, and it seems for my system fonts it returns the correct bounds. Does anyone know if this is a costly method or if there are other possible pitfalls from using it? FontMetrics never seemed to work correctly for me. Or perhaps my expectations of it were misaligned.
Thanks,
BBB
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GlyphVector 有方法
GlyphVector has the method