JavaFX: изменить размер шрифта при печати с помощью DocPrintJob?

Question

Как изменить размер шрифта для задания на печать в JAVA?

TXTFile file = mainApp.getFilesData().get(i); 

InputStream stream = new ByteArrayInputStream(file.getModifiedContent().getBytes(StandardCharsets.UTF_8)); 
PrintService service = PrintServiceLookup.lookupDefaultPrintService(); 

PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet(); 
pras.add(new Copies(1)); 
pras.add(MediaSizeName.ISO_A4); 
pras.add(OrientationRequested.PORTRAIT); 

DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE; 
Doc doc = new SimpleDoc(stream, flavor, null); 
DocPrintJob job = service.createPrintJob(); 

PrintJobWatcher pjw = new PrintJobWatcher(job); 
job.print(doc, pras); 
pjw.waitForDone(); 
stream.close(); 

Благодарим за любые предложения.

Answer 1

Наконец-то я нашел рабочее решение с печатью нескольких страниц.

TXTFile file = mainApp.getFilesData().get(i); 

PrintService service = PrintServiceLookup.lookupDefaultPrintService(); 

PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet(); 
pras.add(MediaSizeName.ISO_A4); 

Doc doc = new SimpleDoc(new PrintableLog(file.getModifiedContent(), lineSeparator), DocFlavor.SERVICE_FORMATTED.PRINTABLE, null); 
DocPrintJob job = service.createPrintJob(); 

PrintJobWatcher pjw = new PrintJobWatcher(job); 
job.print(doc, pras); 
pjw.waitForDone(); 

Версия для печати Класс:

package com.txtlogger.logger.libraries; 

import java.awt.*; 
import java.awt.print.PageFormat; 
import java.awt.print.Printable; 
import java.awt.print.PrinterException; 

public class PrintableLog implements Printable { 

    private int[] pageBreaks; 
    private String strContent; 
    private String lineSeparator; 
    private int pageVerticalMargin = 40; 

    public PrintableLog(String strContent, String lineSeparator) { 
     this.strContent = strContent; 
     this.lineSeparator = lineSeparator; 
    } 

    @Override 
    public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException { 

     String[] content = getLinesFromContent(strContent); 

     Font font = new Font("Serif", Font.PLAIN, 10); 
     FontMetrics metrics = graphics.getFontMetrics(font); 
     int lineHeight = metrics.getHeight(); 

     if (pageBreaks == null) { 
      int linesPerPage = (int)((pageFormat.getImageableHeight()-pageVerticalMargin*2)/lineHeight); 
      int numBreaks = (content.length-1)/linesPerPage; 
      pageBreaks = new int[numBreaks]; 
      for (int b=0; b<numBreaks; b++) { 
       pageBreaks[b] = (b+1)*linesPerPage; 
      } 
     } 

     if (pageIndex > pageBreaks.length) { 
      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 
     * Since we are drawing text we 
     */ 
     Graphics2D g2d = (Graphics2D)graphics; 
     g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY()); 

     /* Draw each line that is on this page. 
     * Increment 'y' position by lineHeight for each line. 
     */ 
     int y = pageVerticalMargin; 
     int start = (pageIndex == 0) ? 0 : pageBreaks[pageIndex-1]; 
     int end = (pageIndex == pageBreaks.length) 
       ? content.length : pageBreaks[pageIndex]; 
     for (int line=start; line<end; line++) { 
      y += lineHeight; 
      graphics.drawString(content[line], 40, y); 
     } 

     /* tell the caller that this page is part of the printed document */ 
     return PAGE_EXISTS; 

    } 

    private String[] getLinesFromContent(String content) { 
     return content.split(this.lineSeparator); 
    } 
}