表在同一行 [英] Table on same line
问题描述
我在我的发布商项目中使用了itextpdf-5.5.6。我想在一个段落或短语或文本的同一行设置一个表?
I use itextpdf-5.5.6 in my publisher project. I want to set a table on same line that a paragraph or phrase or text ?
这样的事情:
在我的段落|我的TAB OF ONE COLUMN |存在于同一行。
In My Para |MY TAB OF ONE COLUMN| is present on a same line.
是否可能?
推荐答案
你不需要桌子。您需要的是一个通用标记事件。看看Chris Haas对这个问题的回答:如何使用ITEXT PDF中的虚线标注文本
You don't need a table. What you need, is a generic tag event. Take a look at the answer by Chris Haas to this question: How do you underline text with dashedline in ITEXT PDF
在这个答案中,他描述了如何使用通常被称为的页面事件通用标记功能。您可以在此处找到Java示例: DashedUnderline
In this answer, he describes how to use a page event often referred to as the generic tag functionality. You can find a Java example here: DashedUnderline
在此示例中,我们使用通用标记功能为块
加下划线,但不是绘制虚线,而是可以轻松绘制矩形。
In this example, we use the generic tag functionality to underline a Chunk
, but instead of drawing a dashed line, you can easily draw a rectangle.
你创建一个像这样的块并设置一个通用标签:
You create a chunk like this and set a generic tag:
Chunk chunk = new Chunk(" This chunk needs to be inside a rectangle ");
chunk.setGenericTag("");
你可以将这个块
作为一部分段落
:
You can make this chunk
part of a Paragraph
:
Paragraph p = new Paragraph("[Before]");
p.add(chunk);
p.add("[After]");
这只有在您声明如下页面事件时才有效:
This will only work if you declare a page event like this:
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
writer.setPageEvent(new DrawRectangle());
当然,我们需要实现 DrawRectangle
class;
Of course, we need to implement the DrawRectangle
class;
public class DrawRectangle extends PdfPageEventHelper {
@Override
public void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text) {
PdfContentByte canvas = writer.getDirectContent();
canvas.rectangle(rect.getLeft(), rect.getBottom(), rect.getWidth(), rect.getHeight());
canvas.stroke();
canvas.restoreState();
}
}
如需更多灵感,请查看 MovieYears 示例取自我的书。它在特定位置添加省略号和影片剪辑: movie_years.pdf
For more inspiration, take a look at the MovieYears example taken from my book. It adds ellipses and movie clips at specific places: movie_years.pdf
在这种情况下, onGenericTag()
方法创建如下:
In this case, the onGenericTag()
method is created like this:
class GenericTags extends PdfPageEventHelper {
public void onGenericTag(PdfWriter writer, Document pdfDocument,
Rectangle rect, String text) {
if ("strip".equals(text))
strip(writer.getDirectContent(), rect);
else if ("ellipse".equals(text))
ellipse(writer.getDirectContentUnder(), rect);
else
countYear(text);
}
public void strip(PdfContentByte content, Rectangle rect) {
content.rectangle(rect.getLeft() - 1, rect.getBottom() - 5f,
rect.getWidth(), rect.getHeight() + 8);
content.rectangle(rect.getLeft(), rect.getBottom() - 2,
rect.getWidth() - 2, rect.getHeight() + 2);
float y1 = rect.getTop() + 0.5f;
float y2 = rect.getBottom() - 4;
for (float f = rect.getLeft(); f < rect.getRight() - 4; f += 5) {
content.rectangle(f, y1, 4f, 1.5f);
content.rectangle(f, y2, 4f, 1.5f);
}
content.eoFill();
}
public void ellipse(PdfContentByte content, Rectangle rect) {
content.saveState();
content.setRGBColorFill(0x00, 0x00, 0xFF);
content.ellipse(rect.getLeft() - 3f, rect.getBottom() - 5f,
rect.getRight() + 3f, rect.getTop() + 3f);
content.fill();
content.restoreState();
}
TreeMap<String, Integer> years = new TreeMap<String, Integer>();
public void countYear(String text) {
Integer count = years.get(text);
if (count == null) {
years.put(text, 1);
}
else {
years.put(text, count + 1);
}
}
}
如您所见,我们检查传递给 setGenericTag()
方法的值。另外:我们并不总是使用该方法来绘制某些东西。在这种情况下,我们还使用通用标记功能来计算事物。
As you can see, we check the value that was passed to the setGenericTag()
method here. Also: we don't always use the method to draw something. In this case, we also use the generic tag functionality to count things.
这篇关于表在同一行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!