Printing is designed to work in pixels per inch. The base print API uses a DPI of 72.
You need to convert your measurements accordingly…
double paperWidth = 8 * 72d;
double paperHeight = 4 * 72d;
double margin = 1 * 72d;
UPDATED with example
g2d.setClip(0, 0, (int)pageFormat.getImageableWidth(), (int)pageFormat.getImageableHeight()); is ill adviced, dangerous and generally, not required, besides which, you’ve used the wrong width and height values. The imageable parameters take into account the margins, but you’ve not translated the graphics, which will more then likely cut of the bottom, left portion of the area you do have to print to…
I’d just avoid using clipping
public class TestPrinting01 {
public static void main(String[] args) {
PrinterJob pj = PrinterJob.getPrinterJob();
if (pj.printDialog()) {
PageFormat pf = pj.defaultPage();
Paper paper = pf.getPaper();
double width = 8d * 72d;
double height = 4d * 72d;
double margin = 1d * 72d;
paper.setSize(width, height);
paper.setImageableArea(
margin,
margin,
width - (margin * 2),
height - (margin * 2));
System.out.println("Before- " + dump(paper));
pf.setOrientation(PageFormat.LANDSCAPE);
pf.setPaper(paper);
System.out.println("After- " + dump(paper));
System.out.println("After- " + dump(pf));
dump(pf);
PageFormat validatePage = pj.validatePage(pf);
System.out.println("Valid- " + dump(validatePage));
Book pBook = new Book();
pBook.append(new Page(), pf);
pj.setPageable(pBook);
try {
pj.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
}
protected static String dump(Paper paper) {
StringBuilder sb = new StringBuilder(64);
sb.append(paper.getWidth()).append("x").append(paper.getHeight())
.append("https://stackoverflow.com/").append(paper.getImageableX()).append("x").
append(paper.getImageableY()).append(" - ").append(paper
.getImageableWidth()).append("x").append(paper.getImageableHeight());
return sb.toString();
}
protected static String dump(PageFormat pf) {
Paper paper = pf.getPaper();
return dump(paper);
}
public static class Page implements Printable {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
if (pageIndex >= 1) {
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) graphics;
// Be careful of clips...
g2d.translate((int) pageFormat.getImageableX(), (int) pageFormat.getImageableY());
double width = pageFormat.getImageableWidth();
double height = pageFormat.getImageableHeight();
g2d.drawRect(0, 0, (int)pageFormat.getImageableWidth() - 1, (int)pageFormat.getImageableHeight() - 1);
FontMetrics fm = g2d.getFontMetrics();
String text = "top";
g2d.drawString(text, 0, fm.getAscent());
text = "bottom";
double x = width - fm.stringWidth(text);
double y = (height - fm.getHeight()) + fm.getAscent();
g2d.drawString(text, (int)x, (int)y);
return Printable.PAGE_EXISTS;
}
}
}
UPDATED
When printing components, you become responsible for it’s layout.
public class TestPrinting01 {
private static JEditorPane editor;
public static void main(String[] args) {
try {
editor = new JEditorPane();
editor.setPage(new File("C:/hold/search.htm").toURI().toURL());
PrinterJob pj = PrinterJob.getPrinterJob();
if (pj.printDialog()) {
PageFormat pf = pj.defaultPage();
Paper paper = pf.getPaper();
double width = 8d * 72d;
double height = 4d * 72d;
double margin = 1d * 72d;
paper.setSize(width, height);
paper.setImageableArea(
margin,
margin,
width - (margin * 2),
height - (margin * 2));
System.out.println("Before- " + dump(paper));
pf.setOrientation(PageFormat.LANDSCAPE);
pf.setPaper(paper);
System.out.println("After- " + dump(paper));
System.out.println("After- " + dump(pf));
dump(pf);
PageFormat validatePage = pj.validatePage(pf);
System.out.println("Valid- " + dump(validatePage));
Book pBook = new Book();
pBook.append(new Page(), pf);
pj.setPageable(pBook);
try {
pj.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
} catch (Exception exp) {
exp.printStackTrace();
}
}
protected static String dump(Paper paper) {
StringBuilder sb = new StringBuilder(64);
sb.append(paper.getWidth()).append("x").append(paper.getHeight())
.append("https://stackoverflow.com/").append(paper.getImageableX()).append("x").
append(paper.getImageableY()).append(" - ").append(paper
.getImageableWidth()).append("x").append(paper.getImageableHeight());
return sb.toString();
}
protected static String dump(PageFormat pf) {
Paper paper = pf.getPaper();
return dump(paper);
}
public static class Page implements Printable {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
if (pageIndex >= 1) {
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) graphics;
// Be careful of clips...
// g2d.setClip(0, 0, (int) pageFormat.getWidth(), (int) pageFormat.getHeight());
g2d.translate((int) pageFormat.getImageableX(), (int) pageFormat.getImageableY());
double width = pageFormat.getImageableWidth();
double height = pageFormat.getImageableHeight();
System.out.println("width = " + width);
System.out.println("height = " + height);
editor.setLocation(0, 0);
editor.setSize((int)width, (int)height);
editor.printAll(g2d);
g2d.setColor(Color.BLACK);
g2d.draw(new Rectangle2D.Double(0, 0, width, height));
return Printable.PAGE_EXISTS;
}
}
}