Use the "paper style" framework in the Java class library to create a custom print template
Use the "paper style" framework in the Java class library to create a custom print template
In Java development, we often encounter needs to print various types of documents or reports.To meet these needs, the Java class library provides many classes and methods for printing.Among them, a very useful framework is the "paper style" framework.
The paper -style framework allows developers to create custom print templates, and customize the layout, text format, image, etc. of the printing page according to the requirements, so as to achieve the function of printing documents or reports according to their own needs.
The following is an example of creating a custom print template using a paper style framework:
import java.awt.*;
import java.awt.print.*;
public class CustomPrintTemplate implements Printable {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
if (pageIndex > 0) {
return NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) graphics;
g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
// Set the layout and style of the print document
Font font = new Font("Arial", Font.BOLD, 12);
g2d.setFont(font);
g2d.setPaint(Color.BLACK);
// Draw text
String text = "This is the example text of the print template";
g2d.drawString(text, 100, 100);
// Draw images
Image image = Toolkit.getDefaultToolkit().getImage("path/to/image.jpg");
g2d.drawImage(image, 200, 200, null);
return PAGE_EXISTS;
}
public static void main(String[] args) {
PrinterJob printerJob = PrinterJob.getPrinterJob();
PageFormat pageFormat = printerJob.defaultPage();
printerJob.setPrintable(new CustomPrintTemplate(), pageFormat);
try {
printerJob.print();
} catch (PrinterException e) {
e.printStackTrace();
}
}
}
In the above sample code, we created a class called CustomPrintTemplate and implemented the Printable interface.In the Print () method, we define the content that needs to be printed, including text and images.Then, in the main () method, we use the PrinterJob class to obtain the printer operation object, and set the printer operating object to the CustomPrintTemplate instance.Finally, call the print () method to perform print operations.
In this way, we can use the paper -style framework to create a custom print template and realize the function of printing documents or reports according to our own needs.
It should be noted that the print () method in the above example is only used to demonstrate the purpose. In actual use, the content and style of printing the template must be customized according to the specific needs.
