Question

我正在尝试以自定义样式将表格打印到一张纸上，但是当我将其发送到打印机时，页面上只打印了列标题。

使用相同的代码打印到JPanel时，它可以正常工作。

我一直在像疯子一样进行调试，但我发现只是在写入打印机时使用了不同的图形，并且它以某种方式略微不同地计算字符串的宽度，尽管我看不到这应该如何影响所写的内容。

我已经确认所有代码都已运行。

绘制标题的代码：

private void drawColumnHeaders(Graphics2D g, PageFormat pf)
{
    g.drawLine(columnWidths[0]-1, 0, columnWidths[0]-1, rowHeight);
    drawText(g, 1, columnHeader[1]);
    drawLineAround(g, 1);
    drawText(g, 2, columnHeader[2]);
    drawLineAround(g, 2);
    etc...
    ...
    g.translate(0, rowHeight);
}

绘制行的代码：

private void drawRow(Graphics2D g, Konto konto, boolean kunAfstanden)
{
    ...
    drawAccountNo(g, konto, 1);
    etc...
    ...
    g.translate(0, rowHeight);
}

...

private void drawAccountNo(Graphics2D g, Account account, int columnNo)
{
    switch (account.getType())
    {
    case SUMACCOUNT: 
        drawLineBeneath(g, columnNo);
    default:
        drawText(g, columnNo, "" + account.getAccountNo());
        break;
    }
}

实用方法：

private void drawText(Graphics2D g, int columnNo, String text)
{
    int startX = calculatePosition(columnNo);
    g.drawString(text, startX + lMargin, g.getFontMetrics().getAscent() + aMargin);
}

private void drawLineAround(Graphics2D g, int columnNo)
{
    int startX = calculatePosition(columnNo);
    drawLineBeneath(g, columnNo);
    g.drawLine(startX + columnWidths[columnNo], 0, startX + columnWidths[columnNo], rowHeight);
}

...

private int calculatePosition(int columnNo)
{
    int result = 0;
    for (int i = 0; i < columnNo; i++)
    {
        result+= columnWidths[i];
    }
    return result;
}

感谢任何帮助。

修改

控制打印的代码：

@Override
public int print(Graphics ga, PageFormat pf, int pageIndex) throws PrinterException
{
    ga.setFont(normalFont);
    Graphics2D g = (Graphics2D) ga;
    if (!writeToPrinter)
    {
        pf = standardPF;
    }
    int returnMessage = -1;
    int noOfRowsOnPage = 0;
    calculateColumnWidths(g, pf);
    //Calculates how many pages there will be:
    calculateNoOfPages(g, pf);

    if (pageIndex < noOfPages)
    {
        //Translates Graphics:
        prepareGraphics(g, pf);
        //The parts that do show up:
        drawHeader(g, pf);
        drawStart(g, pf);
        drawColumnHeaders(g, pf);
        while (returnMessage == -1)
        {
            try
            {
                if (accounts.get(iReached).getType().t() != TypeAccount.NEWPAGE.t() && possibleRows > noOfRowsOnPage)
                {
                    //The part that doesn't (even though the code is reached):
                    drawRow(g, accounts.get(iReached));
                    noOfRowsOnPage++;
                }
                else
                {
                    //If the page isn't empty, go to the next page
                    if (noOfRowsOnPage > 0)
                    {
                        returnMessage = PAGE_EXISTS;
                    }
                }
                iReached++;
            }
            catch (IndexOutOfBoundsException e)
            {
                returnMessage = PAGE_EXISTS;
            }
        }
        drawFooter(g, pf, false);
    }
    else
    {
        returnMessage = NO_SUCH_PAGE;
    }
    return returnMessage;
}

使用的PageFormat初始化：

standardPF = new PageFormat();
standardPF.setOrientation(PageFormat.PORTRAIT);
Paper paper = new Paper();
paper.setImageableArea(30, 30, 535, 780);
paper.setSize(595.44, 841.68);
standardPF.setPaper(paper);

部分图形在发送到打印机时消失

0 个答案: