使用PDFBox设置字符间距 [英] Setting character spacing with PDFBox

问题描述

我目前正在使用Java和PDFBox库即时创建一些PDF.

I'm currently using Java and the PDFBox library to create some PDFs on the fly.

我需要能够设置某些文本的字符间距/跟踪，但似乎无法弄清楚.

I need to be able to set the character spacing/tracking of some text but can't seem to figure it out.

似乎有一种方法可以做到:

It looks as there is a method to do so : http://ci.apache.org/projects/pdfbox/javadoc/index.html?org/apache/pdfbox/util/operator/SetCharSpacing.html

但是我不太确定如何在这种情况下应用它.

But I'm not quite sure how to apply this in the situation.

cs.beginText();
cs.setFont( font, fontSize );
cs.setNonStrokingColor(color);
cs.moveTextPositionByAmount(position[0], position[1]);
cs.drawString(text);
cs.endText();

任何帮助将不胜感激！谢谢.

Any help would be appreciated! Thanks.

推荐答案

您需要用困难的方式完成操作，因为PDPageContentStream类不支持"Tc"运算符:

You need to do it the hard way, because the "Tc" operator isn't supported by the PDPageContentStream class:

cs.appendRawCommands("0.25 Tc\n");

您提到的SetCharSpacing方法用于解析现有的PDF.

The SetCharSpacing method you mentioned is for parsing existing PDFs.

PS:别忘了在写完内容流之后调用close！

PS: don't forget to call close after finishing writing to the content stream!

PPS:setCharacterSpacing()在2.0.4和更高版本中可用.

PPS: setCharacterSpacing() is available in version 2.0.4 and higher.

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