JavaFX PrintAPI 错误的 PaperSource

Question

我正在使用 JavaFx Print-Dialog 来自定义打印作业。所有属性都将存储在 PrinterJob#JobSettings 变量中，但是当我从 jobSetting 收到纸张来源时，纸张来源始终是默认值。

如何获取我设置的纸张来源？

这是一个简短的例子:

public class PrinterPaperSourceTest extends Application {
    public static void main(String[] args) {
        launch( args );
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Printer");
        Button btn = new Button();
        btn.setText("Show Printer Settings ");
        btn.setOnAction( new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                PrinterJob job = PrinterJob.createPrinterJob(Printer.getDefaultPrinter());
                job.showPageSetupDialog(null);
                Alert alert = new Alert(AlertType.INFORMATION);
                PaperSource paperSource = job.getJobSettings().getPaperSource();
                alert.setContentText("PaperSource: " + paperSource.getName());
                alert.show();
            }
        });

        StackPane root = new StackPane();
        root.getChildren().add(btn);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();
    }
}

Answer 1

打印 API 出现在 fx8.0 中。它可以打印节点。您可以使用 javafx.print.PrinterJob 类创建打印机作业。但它只打印适合打印页面的区域，而不是屏幕上的区域。因此，您需要手动使您的节点适合页面(缩放、翻译等)。

您可以使用此代码。希望对您有所帮助。

/**
 * Prints the current page displayed within the internal browser, not necessarily the {@link #presentationProperty()}.
 * If no printers are installed on the system, an awareness is displayed.
 */
public final void print() {
    final PrinterJob job = PrinterJob.createPrinterJob();

    if (job != null) {
        if (job.showPrintDialog(null)) {
            if(this.getPresentation().getArchive() != null) {
                final String extension = ".".concat(this.getPresentation().getArchiveExtension());
                final int indexOfExtension = this.getPresentation().getArchive().getName().indexOf(extension);
                final String jobName = this.getPresentation().getArchive().getName().substring(0, indexOfExtension);
                job.getJobSettings().setJobName(jobName);
            }

            job.getJobSettings().setPrintQuality(PrintQuality.HIGH);
            job.getJobSettings().setPageLayout(job.getPrinter().createPageLayout(Paper.A4, PageOrientation.LANDSCAPE, 0, 0, 0, 0));

            this.internalBrowser.getEngine().print(job);
            job.endJob();
        } else {
            job.cancelJob();
        }
    } else {
        DialogHelper.showError("No printer", "There is no printer installed on your system.");
    }
}

资源链接:

1. javafx.print.PrinterJob examples
2. Introduction by Example: JavaFX 8 Printing