iText最大字体大小 [英] iText Maximum Font Size

问题描述

我正在使用固定的单元格高度来创建表格。
如果字体太大，表格中看不到文字。

I'm using a fixed cell height to create a table. If the font size is too large, the text is not visible in the table.

iText中是否有内置函数可自动缩小字体大小到最大可能的大小，还是我必须自己实现？

Is there a built-in function in iText that automatically reduces the font size to the maximum possible size, or do I have to implement this by myself?

推荐答案

自动字体大小只能在AcroForm文本字段的上下文。将文本字段的字体大小定义为0时，将选择适合矩形的字体大小。如果表中的单元格高度固定，则您有责任确保文本适合。

Automatic font size is only possible in the context of AcroForm text fields. When you define the font size of a text field as 0, then a font size is chosen that fits the rectangle. In the case of a fixed cell height in a table, you are responsible to make sure that the text fits.

如果您担心高度，请选择请查看 FitTextInRectangle 示例：

If you're concerned about the height, please take a look at the FitTextInRectangle example:

BaseFont bf = BaseFont.createFont();
int textHeightInGlyphSpace = bf.getAscent(text) - bf.getDescent(text);
float fontSize = 1000f * fixedHeight / textHeightInGlyphSpace;

这个例子是为了回答在矩形iText中更正文本位置中心

如果你担心的话宽度，然后你需要使用 getWidthPoint（）方法，如下所述：如何计算iText中的字符串宽度？

If you're concerned about the width, then you need to use the getWidthPoint() method as explained here: How to calculate the string width in iText?

BaseFont bf = BaseFont.createFont();
float width = bf.getWidthPoint("My text", myFontSize);

您需要确保宽度不超过细胞的宽度。为此，您需要调整 myFontSize 。

You'll need to make sure that width doesn't exceed the width of the cell. To achieve this, you'll need to adjust myFontSize.

请参阅我对此问题的回答：如何选择字体的最佳大小？

See my answer to this question: How to choose the optimal size for a font?

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