我想提请阿拉伯文字到一个位图显示:
I'm trying to draw Arabic text onto a Bitmap for display:
Bitmap img = Bitmap.createBitmap( (int) f+100, 300, Config.RGB_565);
Canvas c = new Canvas();
c.setBitmap( img );
mFace = Typeface.createFromAsset(getAssets(),"DejaVuSansCondensed.ttf");
mPaint.setTypeface(mFace);
content = "يجري";
content = ArabicUtilities.reshape( content );
System.out.println("Drawing text: " + content);
c.drawText(content, 30, 30, mPaint);
该ArabicUtilities类是一个工具,以便字母连接到重塑UNI code文本。请参阅: http://github.com/agawish/Better-Arabic-Reshaper/
不过,这会产生类似下面这样的位图:
However, the bitmap that is generated looks like this:
当它应该看起来像يجري
我相信这个问题是因为,不像的TextView 中, Bitmap类是不是比迪知道,所以它吸引的字母从左至右书写。
I believe the issue is because, unlike a TextView, the Bitmap class is not BiDi aware, so it draws the letters from left to write.
尝试,因为我可能,我想不出如何绘制在正确的顺序中的文本。
Try as I might, I can't figure out how to draw the text in the correct order.
画布实际上是一个围绕Skia的画布(私有图形引擎)的包装。 Skia的不执行任何比迪/整形,它只是吸引字形序列。
Canvas is practically a wrapper around the Canvas of Skia (native graphics engine). Skia doesn't perform any BiDi/reshaping, it simply draws sequences of glyphs.
TextView的,对其他的方式,采用了Android的文本相关的对象的负载,其中包括布局和派生类里面做简单的(实际上是愚蠢的)比迪。 Android的比迪是非常愚蠢的,它甚至不能处理的数字在RTL:طولي180'显示'طولي081
TextView, on the other way, uses a load of Android's text-related objects, among them Layout and derived classes which do simple (actually dumb) BiDi. Android's BiDi is very dumb that it can't even handle digits in RTL: 'طولي 180' is displayed 'طولي 081'.
我个人不相信Android的电流比迪,并会写我自己的统一code-比迪兼容类,并使用它,如果我需要。我建议你除了手动整形兄弟使用手动比迪。切记:一是比迪,然后重塑
Personally I don't trust Android's current BiDi, and would write my own Unicode-BiDi compliant class and use it if I need. I suggest you use manual BiDi in addition to the manual reshaping bro. Remember: First BiDi, then reshape!
萨拉姆