package com.jll.demo;

import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfWriter;

public class PDFBuilder {
	private int pageHeight;
	private int pageWidth;
	public PDFBuilder(){	
	}
	public static PDFBuilder getInstance(){
		return new PDFBuilder();
	}
	//这个方法主要是测试可不可以显示 第几页/共几页 模式
	public void generatePDF()throws Exception{
		Document document = new Document(new Rectangle(pageWidth,pageHeight));
		PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("d:\\3.pdf"));
		setFooter(writer);
		writer.setFullCompression();
		writer.setPdfVersion(PdfWriter.VERSION_1_4);
		document.open();
		PdfContentByte cb = writer.getDirectContent();
		 new ColumnText(cb);
		for (int i = 0; i < 10; i++) {
			document.newPage();
			//如果不设置 空白页无法单独显示
			writer.setPageEmpty(false);
		}
		document.close();
	}
	public static void setFooter(PdfWriter writer) throws DocumentException,IOException{
		//更改事件，瞬间变身 第几页/共几页 模式。
		PdfReportM1HeaderFooter headerFooter = new PdfReportM1HeaderFooter();
		//就是上面那个类
		writer.setBoxSize("art",PageSize.A4);
		writer.setPageEvent(headerFooter);
	}
	public int getPageHeight() {
		return pageHeight;
	}
	public void setPageHeight(int pageHeight) {
		this.pageHeight = pageHeight;
	}
	public int getPageWidth() {
		return pageWidth;
	}
	public void setPageWidth(int pageWidth) {
		this.pageWidth = pageWidth;
	}
	public static void main(String[] args) throws Exception {
		PDFBuilder builder = new PDFBuilder();
		builder.setPageHeight(400);
		builder.setPageWidth(600);
		//builder.generatePDF();
	}
}