Question

我想将节点及其内容（ImageView，Label，VBox等）打印到热敏打印机。我已经准备好节点并将其设置为适合80mm纸张的大小。

问题是，当我尝试创建自定义纸张尺寸以适合热敏打印机的80mm纸张尺寸时，所有内容都移到了右侧。

但是，只有当我更改论文的height时，这种情况才会发生。

这是我的打印代码

public void printImage(Node node) {

        PrinterJob job = PrinterJob.createPrinterJob();

        Paper paper = PrintHelper.createPaper("Roll80", 80, 270, Units.MM);
        PageLayout pageLayout = job.getPrinter().createPageLayout(paper, PageOrientation.PORTRAIT, 0, 0, 0, 0);

        double scale = 0.791;

        node.getTransforms().add(new Scale(scale, scale));

        if (job != null) {
            boolean success = printerJob.printPage(pageLayout, node);
            if (success) {
                job.endJob();
                System.exit(0);
            }
        }
    }

ٌ将纸张高度设置为小于310或大于340时的结果示例：Paper paper = PrintHelper.createPaper("Roll80", 80, 270, Units.MM); results1

ٌ将纸张高度设置为310或340或大于560时的结果示例：Paper paper = PrintHelper.createPaper("Roll80", 80, 590, Units.MM); results2 *图片比捕获的图片高得多。

注意：当我将宽度调整为大于100时，我仍然可以将高度调整为小于230，没有问题，但是仍然，我希望页面宽度为80mm，并且高度与收据（节点）的高度相同。

PrintHelper方法：

package com.sun.javafx.print;

import javafx.print.JobSettings;
import javafx.print.Paper;
import javafx.print.PaperSource;
import javafx.print.PrintResolution;
import javafx.print.Printer;

/**
 * An internal class which provides a way for implementation code to
 * access to package level protected constructors (etc).
 * All entry points to the printing API need to ensure this class is
 * loaded and initialized.
 */
public class PrintHelper {
    private static PrintAccessor printAccessor;

    static {
        forceInit(Printer.class);
    }

    private PrintHelper() {
    }

    public static PrintResolution createPrintResolution(int fr, int cfr) {
        return printAccessor.createPrintResolution(fr, cfr);
    }

    public static Paper createPaper(String paperName,
                             double paperWidth,
                             double paperHeight,
                             Units units) {
        return printAccessor.createPaper(paperName, paperWidth, paperHeight, units);
    }

    public static PaperSource createPaperSource(String name) {
        return printAccessor.createPaperSource(name);
    }

    public static JobSettings createJobSettings(Printer printer) {
        return printAccessor.createJobSettings(printer);
    }

    public static Printer createPrinter(PrinterImpl impl) {
        return printAccessor.createPrinter(impl);
    }

    public static PrinterImpl getPrinterImpl(Printer printer) {
        return printAccessor.getPrinterImpl(printer);
    }

    public static void setPrintAccessor(final PrintAccessor newAccessor) {
        if (printAccessor != null) {
            throw new IllegalStateException();
        }

        printAccessor = newAccessor;
    }

    public interface PrintAccessor {
        PrintResolution createPrintResolution(int fr, int cfr);

        Paper createPaper(String paperName,
                                          double paperWidth,
                                          double paperHeight,
                                          Units units);

        PaperSource createPaperSource(String name);

        JobSettings createJobSettings(Printer printer);

        Printer createPrinter(PrinterImpl impl);

        PrinterImpl getPrinterImpl(Printer printer);
    }

    private static void forceInit(final Class<?> classToInit) {
        try {
            Class.forName(classToInit.getName(), true,
                          classToInit.getClassLoader());
        } catch (final ClassNotFoundException e) {
            throw new AssertionError(e);  // Can't happen
        }
    }
}

如何将节点打印到热敏打印机-JavaFX

0 个答案: