使用iTextSharp ColumnText的居中多行文字 [英] Centered, multiline text using iTextSharp ColumnText

问题描述

我正在尝试使用iTextSharp对多行文本进行居中。我认为使用ColumnText可以解决问题，但我在同时进行中心对齐以及正确包装工作时遇到了一些麻烦。

I am trying to center a block of multiline text using iTextSharp. I thought that using the ColumnText would do the trick, but I'm having some trouble getting both center alignment, as well as proper wrapping working at the same time.

这里是一些代码，显示了我正在尝试的两种方法：

Here is some code which shows the 2 methods I'm trying:

private void PrintLocationAddress(PdfContentByte Canvas, string Address)
{
    //define the regions for our ColumnText objects
    Rectangle rect1 = new Rectangle(150f, 300, 350f, 450f);
    Rectangle rect2 = new Rectangle(150f, 50f, 350f, 200f);

    //outline the rectangles so we can visualize placement of the ColumnText
    Canvas.Rectangle(rect1.Left, rect1.Bottom, rect1.Width, rect1.Height);
    Canvas.Rectangle(rect2.Left, rect2.Bottom, rect2.Width, rect2.Height);
    Canvas.SetColorStroke(BaseColor.CYAN);
    Canvas.Stroke();

    //define the text and style
    Chunk c = new Chunk(Address, new Font(Font.FontFamily.COURIER, 12, Font.NORMAL, BaseColor.MAGENTA));
    c.SetTextRenderMode(PdfContentByte.TEXT_RENDER_MODE_FILL, 0, BaseColor.PINK);
    Phrase LongText = new Phrase(c);

    //this text is centered, but will wrap onto itself on the same line
    ColumnText column1 = new ColumnText(Canvas);
    column1.SetSimpleColumn(LongText, rect1.Left, rect1.Bottom, rect1.Right, rect1.Top, 0, PdfContentByte.ALIGN_CENTER);
    column1.Go();

    //this text will wrap, but how to center it?!
    ColumnText column2 = new ColumnText(Canvas);
    column2.SetSimpleColumn(rect2);
    column2.SetText(LongText);
    column2.Go();
}

您可以查看上述代码的输出：
http://imgur.com/Ty3oD7w

You can view the output for the above code: http://imgur.com/Ty3oD7w

推荐答案

我错过了ColumnText.Alignment属性：

I missed the ColumnText.Alignment property:

column2.Alignment = Element.ALIGN_CENTER;

因此，要使用ColumnText在一个指定尺寸的框中居中获取Multiline文本：

So, to get Multiline text, centered, in a box of specified dimensions using ColumnText:

ColumnText column2 = new ColumnText(Canvas);
column2.SetSimpleColumn(rect2);
column2.SetText(LongText);
column2.Alignment = Element.ALIGN_CENTER;
column2.Go();

这篇关于使用iTextSharp ColumnText的居中多行文字的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！