Java Windows UTF-8 (unicode) Drucken

Ist es einfacher, es zu tun mit SWT hier ist der code...

package printer;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.printing.Printer;
import org.eclipse.swt.printing.PrinterData;

public class TextPrinter {

    Printer printer;
    GC gc;
    int lineHeight = 0;
    int tabWidth = 0;
    int leftMargin;
    int rightMargin;
    int topMargin, bottomMargin;
    int x;
    int y;
    int index;
    int end;
    String tabs;
    StringBuffer wordBuffer;

    public TextPrinter() {
    }

    public void printString(final String textToPrint) {

        PrinterData data = Printer.getDefaultPrinterData();
        printer = new Printer(data);
        Thread printingThread = new Thread("Printing") {
            @Override
            public void run() {
                print(printer, textToPrint);
                printer.dispose();
            }
        };
        printingThread.start();
    }

    void print(Printer printer, String textToPrint) {
        if (printer.startJob("iassael")) { 

            Rectangle clientArea = printer.getClientArea();
            Rectangle trim = printer.computeTrim(0, 0, 0, 0);
            Point dpi = printer.getDPI();
            leftMargin = dpi.x + trim.x; //one inch from left side of paper
            rightMargin = clientArea.width - dpi.x + trim.x + trim.width; 
            topMargin = dpi.y + trim.y; //one inch from top edge of paper
            bottomMargin = clientArea.height - dpi.y + trim.y + trim.height;

            /* Create a buffer for computing tab width. */
            int tabSize = 4; //is tab width a user setting in your UI?
            StringBuffer tabBuffer = new StringBuffer(tabSize);
            for (int i = 0; i < tabSize; i++)
                tabBuffer.append(' ');
            tabs = tabBuffer.toString();

            /*
             * Create printer GC, and create and set the printer font &
             * foreground color.
             */
            gc = new GC(printer);

            Font font = new Font(null, "Helvetica", 11, SWT.NORMAL);
            gc.setFont(font);
            tabWidth = gc.stringExtent(tabs).x;
            lineHeight = gc.getFontMetrics().getHeight();

            /* Print text to current gc using word wrap */
            printText(textToPrint);
            printer.endJob();

            /* Cleanup graphics resources used in printing */
            font.dispose();
            gc.dispose();
        }
    }

    void printText(String textToPrint) {
        printer.startPage();
        wordBuffer = new StringBuffer();
        x = leftMargin;
        y = topMargin;
        index = 0;
        end = textToPrint.length();
        while (index < end) {
            char c = textToPrint.charAt(index);
            index++;
            if (c != 0) {
                if (c == 0x0a || c == 0x0d) {
                    if (c == 0x0d && index < end
                            && textToPrint.charAt(index) == 0x0a) {
                        index++; //if this is cr-lf, skip the lf
                    }
                    printWordBuffer();
                    newline();
                } else {
                    if (c != '\t') {
                        wordBuffer.append(c);
                    }
                    if (Character.isWhitespace(c)) {
                        printWordBuffer();
                        if (c == '\t') {
                            x += tabWidth;
                        }
                    }
                }
            }
        }
        if (y + lineHeight <= bottomMargin) {
            printer.endPage();
        }
    }

    void printWordBuffer() {
        if (wordBuffer.length() > 0) {
            String word = wordBuffer.toString();
            int wordWidth = gc.stringExtent(word).x;
            if (x + wordWidth > rightMargin) {
                /* word doesn't fit on current line, so wrap */
                newline();
            }
            gc.drawString(word, x, y, false);
            x += wordWidth;
            wordBuffer = new StringBuffer();
        }
    }

    void newline() {
        x = leftMargin;
        y += lineHeight;
        if (y + lineHeight > bottomMargin) {
            printer.endPage();
            if (index + 1 < end) {
                y = topMargin;
                printer.startPage();
            }
        }
    }
}

InformationsquelleAutor Yannis Assael

Für auto_sense Sie schreiben, könnte ein BOM-Zeichen (\uFEFF) vor den text. Dies ist ein zero-width space, verwendet für die Markierung einen text als unicode.

InformationsquelleAutor Joop Eggen