Javascript 如何使用图形组件打印jpanel
这里我只使用打印JPanel,但我需要为drawLine方法放置图形组件。如何使用它任何人请建议我。这里是打印JPanel的示例代码Javascript 如何使用图形组件打印jpanel,javascript,java,Javascript,Java,这里我只使用打印JPanel,但我需要为drawLine方法放置图形组件。如何使用它任何人请建议我。这里是打印JPanel的示例代码 public class Sample { JPanel component_name = new JPanel(); public void printComponenet(){ PrinterJob pj = PrinterJob.getPrinterJob(); pj.setJobName(" Print Component ");
public class Sample {
JPanel component_name = new JPanel();
public void printComponenet(){
PrinterJob pj = PrinterJob.getPrinterJob();
pj.setJobName(" Print Component ");
pj.setPrintable (new Printable() {
public int print(Graphics pg, PageFormat pf, int pageNum){
if (pageNum > 0){
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2 = (Graphics2D) pg;
g2.translate(pf.getImageableX(), pf.getImageableY());
component_name.printAll(g2);
return Printable.PAGE_EXISTS;
}
});
if (pj.printDialog() == false)
return;
try {
pj.print();
} catch (PrinterException ex) {
// handle exception
}
}
加
用要使用的整数值替换(或指定)四个参数。例如:
g2.drawLine(30,40,400,300);
应该适用于大多数显示器
g2.setColor(r,g,b);
以前,如果你想要黑色以外的颜色
g2.setColor(r,g,b);