PyQt打印原始PDF [英] PyQt Printing raw PDF

问题描述

假设我在当前目录中有一个 test.pdf 文件，我想使用 PyQt gui打印机将该原始文件发送到打印机.

Assuming I have a test.pdf file in the current directory, I would like to send this raw file to a printer using the PyQt gui Printer.

以下Python3代码可打印PDF源代码！我不希望Qt为我构建PDF，而只是通过GUI对话框将其发送到打印机.

The following Python3 code prints the PDF source code! I don't want Qt to build the PDF for me, but just send it to the printer with a gui dialog box.

这应该在任何操作系统上都可以使用(无lp命令)……假设打印机设备本身可以理解PDF.

This should work on any OS, (no lp command) ...assuming that the printer device understands PDF natively.

import sys, PyQt4.QtCore, PyQt4.QtGui

def pdf():
    pdf = open('test.pdf', encoding='utf-8').read() # ascii PDF here
    doc = PyQt4.QtGui.QTextDocument(pdf)
    printer = PyQt4.QtGui.QPrinter()
    dialog = PyQt4.QtGui.QPrintDialog(printer)
    if dialog.exec_() == True:
        doc.print_(printer)

if __name__ == '__main__':
    app = PyQt4.QtGui.QApplication(sys.argv)
    w = PyQt4.QtGui.QWidget()
    but = PyQt4.QtGui.QPushButton('Print', w)
    but.clicked.connect(pdf)  
    PyQt4.QtGui.QVBoxLayout(w).addWidget(but)
    w.show()
    sys.exit(app.exec_())

推荐答案

其中内置了支持以编写 PDF格式的文档，但不支持读取的文档.

There is built in support for writing a document in PDF format, but not for reading one.

要阅读PDF文档，您必须首先使用第三方库，或使用外部工具将pdf转换为另一种格式(例如文本或html).

To read PDF documents, you will have to use a third-party library, or use an external tool to convert the pdf to another format (such as text, or html) first.

有关处理PDF文档的概述，请参见此处.

See here for an overview on handling PDF documents.

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