问题描述
如何用java实现，1.白色的提示结账面（就是图片中间的白色图片跟上面显示的结账单），2.用什么方法如何打印出来结账单 我上传了附件，有会的帮忙讲解下，或是写个代码带个注释！ 问题补充第一个问题知道了，第二个问题有谁知道？就是打印结账单如何打印，写个简单的出来，最好加个注释，非常感谢！问题补充太强悍了！！！
解决方案
public class PrintPreviewDialog extends JDialog implements ActionListener {/** * */private static final long serialVersionUID = -7320342468005550954L;private JButton nextButton = new JButton("Next");private JButton previousButton = new JButton("Previous");private JButton closeButton = new JButton("Close");private JPanel buttonPanel = new JPanel();private PreviewCanvas canvas;public PrintPreviewDialog(Frame parent, String title, boolean modal,PrintTest pt, String str) {super(parent, title, modal);canvas = new PreviewCanvas(pt, str);setLayout();}private void setLayout() {this.getContentPane().setLayout(new BorderLayout());this.getContentPane().add(canvas, BorderLayout.CENTER);nextButton.setMnemonic('N');nextButton.addActionListener(this);buttonPanel.add(nextButton);previousButton.setMnemonic('N');previousButton.addActionListener(this);buttonPanel.add(previousButton);closeButton.setMnemonic('N');closeButton.addActionListener(this);buttonPanel.add(closeButton);this.getContentPane().add(buttonPanel, BorderLayout.SOUTH);this.setBounds((int) ((SystemProperties.SCREEN_WIDTH - 400) / 2),(int) ((SystemProperties.SCREEN_HEIGHT - 400) / 2), 400, 400);}public void actionPerformed(ActionEvent evt) {Object src = evt.getSource();if (src == nextButton)nextAction();else if (src == previousButton)previousAction();else if (src == closeButton)closeAction();}private void closeAction() {this.setVisible(false);this.dispose();}private void nextAction() {canvas.viewPage(1);}private void previousAction() {canvas.viewPage(-1);}class PreviewCanvas extends JPanel {private String printStr;private int currentPage = 0;private PrintTest preview;public PreviewCanvas(PrintTest pt, String str) {printStr = str;preview = pt;}public void paintComponent(Graphics g) {super.paintComponent(g);Graphics2D g2 = (Graphics2D) g;PageFormat pf = PrinterJob.getPrinterJob().defaultPage();double xoff;double yoff;double scale;double px = pf.getWidth();double py = pf.getHeight();double sx = getWidth() - 1;double sy = getHeight() - 1;if (px / py < sx / sy) {scale = sy / py;xoff = 0.5 * (sx - scale * px);yoff = 0;} else {scale = sx / px;xoff = 0;yoff = 0.5 * (sy - scale * py);}g2.translate((float) xoff, (float) yoff);g2.scale((float) scale, (float) scale);Rectangle2D page = new Rectangle2D.Double(0, 0, px, py);g2.setPaint(Color.white);g2.fill(page);g2.setPaint(Color.black);g2.draw(page);try {preview.print(g2, pf, currentPage);} catch (PrinterException pe) {g2.draw(new Line2D.Double(0, 0, px, py));g2.draw(new Line2D.Double(0, px, 0, py));}}public void viewPage(int pos) {int newPage = currentPage + pos;if (0 <= newPage && newPage < preview.getPagesCount(printStr)) {currentPage = newPage;repaint();}}}}
解决方案二：
不错就用JWindow，没有标题栏和边框也没有任务栏按钮的，把景色设置为白色就可以了
解决方案三：
JWindow可以实现