package org.jeecg.modules.tms.utils;
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import javax.print.*;
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import javax.print.attribute.HashPrintRequestAttributeSet;
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import javax.print.attribute.PrintRequestAttributeSet;
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import java.awt.print.*;
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import java.awt.image.BufferedImage;
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import java.awt.*;
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public class QrCodePrinterUtils implements Printable {
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private final BufferedImage image;
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public QrCodePrinterUtils(BufferedImage image) {
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this.image = image;
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}
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/**
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* 打印二维码
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*/
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public void print() {
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PrinterJob job = PrinterJob.getPrinterJob();
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job.setPrintable(this);
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// 弹出打印对话框（可选）
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if (job.printDialog()) {
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try {
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job.print();
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} catch (PrinterException e) {
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System.err.println("打印失败: " + e.getMessage());
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}
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}
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}
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/**
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* 实现 Printable 接口的打印方法
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*/
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@Override
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public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
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if (pageIndex > 0) {
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return NO_SUCH_PAGE;
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}
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Graphics2D g2d = (Graphics2D) graphics;
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g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
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// 计算居中坐标
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double pageWidth = pageFormat.getImageableWidth();
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double pageHeight = pageFormat.getImageableHeight();
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double imgWidth = image.getWidth();
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double imgHeight = image.getHeight();
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double scale = Math.min(pageWidth / imgWidth, pageHeight / imgHeight);
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g2d.scale(scale, scale);
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g2d.drawImage(image, 0, 0, null);
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return PAGE_EXISTS;
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}
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/**
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* 使用默认打印机打印，不弹对话框
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*/
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public static void noDialogPrint(){
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BufferedImage qrImage = QrCodeUtils.generateQrCode("Silent Print", 300, 300);
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QrCodePrinterUtils printer = new QrCodePrinterUtils(qrImage);
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PrinterJob job = PrinterJob.getPrinterJob();
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job.setPrintable(printer);
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try {
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job.print();
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} catch (PrinterException e) {
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e.printStackTrace();
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}
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}
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}
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