java - 如何使用特殊尺寸的热敏打印机打印

Question

我正在寻找一种使用热敏打印机打印列表的方法，但它只能打印 72.1 毫米 x 210 毫米。我开始着手我的项目，我的一个朋友负责制作窗户和管理印刷。除了当我打印“this”时，文本会出现在 A4 页面上。

请帮我 ！！！

import javax.print.PrintException;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.IOException;

public class FentreListeDeCourse extends JFrame implements ActionListener, Printable {
    private JPanel panel;
    private JList theList;
    private JButton print;
    private JButton suppr;
    private JPanel panneauDroite;
    private DefaultListModel model;


    public FentreListeDeCourse(){
        super();
        //debug
        this.model = new DefaultListModel();


        this.panel =(JPanel)getContentPane();
        setTitle("La super liste de Francky");
        setSize(1280,720);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
        setLayout(new BorderLayout());
        this.theList = new JList(this.model);
        this.theList.setLayoutOrientation(JList.VERTICAL);
        this.theList.setBorder(BorderFactory.createEmptyBorder(25,25,25,25));
        this.panel.add(this.theList,BorderLayout.CENTER);


        this.panneauDroite = new JPanel();
        this.panneauDroite.setLayout(new FlowLayout(FlowLayout.CENTER));
        this.panel.add(this.panneauDroite,BorderLayout.EAST);

        this.suppr = new JButton("Supprimer l'article sel.");
        this.print = new JButton("Imprimer");
        this.suppr.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
        this.print.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
        this.suppr.addActionListener(this);
        this.print.addActionListener(this);
        this.panneauDroite.add(this.suppr);
        this.panneauDroite.add(this.print);


    }


    public void addToList(String name){
//        System.out.println(name);
        if(this.model.size() != 0){
            int i = 0;
            boolean find = false;
            do{
                String nameIn = (String) this.model.get(i);
                
                if(nameIn.substring(0,nameIn.indexOf("      ")).equals(name)){
                    find = true;
                }
                i++;
            }while (i < this.model.size() && !find);
//            System.out.println(find);
            if(find){
                int index = i -1;
                String nameIn = (String) this.model.get(index);
                String tmp = nameIn.substring(0,nameIn.indexOf("      "));
                int nb = Integer.parseInt(nameIn.substring(nameIn.lastIndexOf("X") + 1)) + 1;
                this.model.set(index,tmp + "      X" + nb);
            }else{
                this.model.addElement(name + "      X1");
            }
        }else{
            this.model.addElement(name + "      X1");
        }
    }

    private void delListSelected(){
        int selectedIndex = this.theList.getSelectedIndex();
        System.out.println(selectedIndex);
        if(selectedIndex != -1){
            model.remove(selectedIndex);
        }else{
            JOptionPane.showMessageDialog(this,"Impossible de supprimer, rien n'est sélectionné","Attntion",JOptionPane.ERROR_MESSAGE);
        }
    }

    public void printButton() throws PrintException, IOException {
        if(this.model.size() != 0){
            PrinterJob job = PrinterJob.getPrinterJob();
            job.setPrintable(this);
            
            System.out.println(this);
                     
            boolean ok = job.printDialog();
            if (ok) {
                try {
                    job.print();
                } catch (PrinterException ex) {
                    /* The job did not successfully complete */
                }
            }
        }else{
            System.out.println("wallah y a rien a imprimer gros con");
        }
    }

    public void actionPerformed(ActionEvent e) {
        if(e.getSource() == this.suppr){
            delListSelected();
        }
        if(e.getSource() == this.print){
             try {
                printButton();
            } catch (PrintException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
        }
    }

    public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
        if (pageIndex > 0) {
            return NO_SUCH_PAGE;
        }
        // User (0,0) is typically outside the
        // imageable area, so we must translate
        // by the X and Y values in the PageFormat
        // to avoid clipping.
        Graphics2D g2d = (Graphics2D)graphics;
        g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());

        //ajout des infos present dans la liste de gauche
        int y =10;
        for(int i=0;i< this.model.size();i++){
            String nameLocal = (String) this.model.get(i);
            g2d.drawString(nameLocal, 0, y);
            y = y + 25;
        }
        // tell the caller that this page is part
        // of the printed document
        return PAGE_EXISTS;
    }
}

谢谢您的回答

标签： java