无声打印嵌入式PDF

Question

我有一个带有嵌入式PDF的网页。我的代码看起来像这样：

<embed
    type="application/pdf"
    src="path_to_pdf_document.pdf"
    id="pdfDocument"
    width="100%"
    height="100%">
</embed>

我有此JavaScript代码以打印我的PDF：

function printDocument(documentId) {

    //Wait until PDF is ready to print    
    if (typeof document.getElementById(documentId).print == 'undefined') {

        setTimeout(function(){printDocument(documentId);}, 1000);

    } else {

        var x = document.getElementById(documentId);
        x.print();
    }
}

执行此代码时，Acrobat插件将打开众所周知的打印对话框。这样的事情：

两个问题：

• 如何改善检测PDF已加载并准备好打印的方法？
• 如何避免显示打印对话框？

有关我的系统的更多信息：

OS： Windows XP

浏览器： Internet Explorer 7

PDF插件： Acrobat Reader 9

Answer 1

您将无法使用普通的旧JavaScript静静地打印。您希望打印机如何开始打印全黑的100000000页。不是一件好事。如果您想静静地打印并仅适用于Internet Explorer，则有ActiveX控件可以做到。这需要您的页面和用户真正信任您的网站的更高安全设置。

Answer 2

This is possible in a trusted, Intranet environment.

<object id="pdfDoc" style="position:absolute;z-index:-1;" name="pdfDoc" classid="clsid:CA8A9780-280D-11CF-A24D-444553540000" width="900px" height="100%">
        <param name="SRC" value="yourdoc.pdf" />
    </object>

<input type="button" ... onclick="pdfDoc.printAll();" />

This will bypass the print dialog and send directly to the default printer.

Answer 3

I wonder if you actually need to wait before printing -- won't the print job handle that for you? And I truly hope no modern browser will allow you (or any website for that matter) to print without that confirmation dialog (some old browsers used to do that, a long time ago).

Answer 4

You can do this in Firefox by changing about:config. Add print.always_print_silent and set it to true.