在Android的一些油漆常数的含义 [英] Meaning of some Paint constants in Android

问题描述

有一些涂料不断在Android中，对此，我无法找到很多信息。谁能帮我稍微解释一下关于这些标志：

There are a few Paint constant in Android about which I couldn't find much info. Could anyone help me with a bit of explanation about those flags:

• LINEAR_TEXT_FLAG
• SUBPIXEL_TEXT_FLAG
• FILTER_BITMAP_FLAG

时的子像素模式，一些接近的ClearType或者是一个完全不同的？

Is 'subpixel' mode something close to ClearType or is it something altogether different?

推荐答案

SUBPIXEL的确是子像素抗锯齿，这是目前不支持Android系统。设置此标志将没有任何效果。 FILTER_BITMAP用于双线性过滤应用到他们的位图转化时（比例为实例。）它通常是一个好主意，让FILTER_BITMAP除非速度的问题（多）比质量。 LINEAR_TEXT是用在与设置为您TEXTSIZE / 64的比例因子一64PX文本大小绘制文本。

SUBPIXEL is indeed for sub-pixel antialiasing, which is currently not supported on Android. Setting this flag will have no effect. FILTER_BITMAP is used to apply bilinear filtering to bitmaps when they are transformed (scaled for instance.) It's usually a good idea to enable FILTER_BITMAP unless speed matters (much) more than quality. LINEAR_TEXT is used to draw text at a 64px text size with a scale factor set to your textSize/64.

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