我只是让打印机在
java中工作我也需要它,但是我需要解决的最后一个问题.当它打印时,字体的宽度相当拉伸,并且不像它应该的那样清晰和清晰.
这是我的代码我的实际绘图到论文:
FontMetrics metrics = graphics.getFontMetrics(font);
int lineHeight = metrics.getHeight();
arrangePage(graphics, pageFormat, lineHeight);
if (page > pageBreaks.length){
return NO_SUCH_PAGE;
}
Graphics2D g = (Graphics2D) graphics;
g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
g.setFont(font);
int y = 0;
int begin = 0;
if (page == 0){
begin = 0;
}else begin = pageBreaks[page-1];
int end = 0;
if (page == pageBreaks.length){
end = lines.length;
}else end = pageBreaks[page];
for (int line = begin; line < end; line++){
y += lineHeight;
g.drawString(lines[line], 0, y);
}
string = deepCopy;
return PAGE_EXISTS;
如何摆脱拉伸?可以注意到,这是基于本教程:
http://docs.oracle.com/javase/tutorial/2d/printing/set.html
非常感谢任何建议或帮助.
最佳答案 默认的DPI是正常的72 DPI(我相信),在印刷纸上,它非常糟糕.您需要提示打印API尝试找到具有更好DPI的打印机.
基本上您需要使用print services API.
试试像……
public class PrintTest01 {
public static void main(String[] args) {
PrinterResolution pr = new PrinterResolution(300, 300, PrinterResolution.DPI);
PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
aset.add(MediaSizeName.ISO_A4);
aset.add(pr);
aset.add(OrientationRequested.PORTRAIT);
PrinterJob pj = PrinterJob.getPrinterJob();
pj.setPrintable(new Page());
try {
pj.print(aset);
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
public static class Page implements Printable {
@Override
public int print(Graphics g, PageFormat pageFormat, int pageIndex) throws PrinterException {
if (pageIndex > 0) {
return NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) g;
g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
g.setFont(new Font("Arial", Font.PLAIN, 128));
FontMetrics fm = g.getFontMetrics();
int x = (int)(pageFormat.getWidth() - fm.stringWidth("A")) / 2;
int y = (int)((pageFormat.getHeight() - fm.getHeight()) / 2) + fm.getAscent();
g2d.drawString("A", x, y);
return PAGE_EXISTS;
}
}
}
你可能会发现Working with Print Services and Attributes的一些帮助……
我应该警告你,这将打印到它可以找到的第一个符合PrintRequestAttributeSet的打印件.你也可以添加打印对话框来查看它在做什么,但这是我现在可以生活的另一个复杂程度;)