pyqt如何打印QWebEngineView显示出来的本地pdf文件
时间: 2024-09-14 17:12:32 浏览: 22
在PyQt5中,要将`QWebEngineView`展示的PDF内容保存并打印,你需要先确保PDF已经被加载到`QWebEngineView`中,然后使用`QPrintDialog`和`QPrinter`来创建打印任务。以下是一个简单的步骤示例:
```python
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QAction, QIcon
from PyQt5.QtWidgets import QApplication, QMainWindow, QFileDialog, QToolBar, QPrintDialog, QPrinter
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEnginePage
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
# ... (其他窗口初始化代码)
self.printAction = QAction('Print', self)
self.printAction.setIcon(QIcon('print.png'))
self.printAction.triggered.connect(self.print_pdf)
toolBar = QToolBar('Print')
toolBar.addAction(self.printAction)
self.addToolBar(toolBar)
def print_pdf(self):
view_pdf = self.findChild(QWebEngineView, 'webEngineView') # 替换成你的视图ID
if not view_pdf or not view_pdf.page():
return
# 获取当前页面的内容
page = view_pdf.page()
pdf_bytes = page.toHtml().toLocal8Bit()
# 创建打印机
printer = QPrinter()
dialog = QPrintDialog(printer, self)
if dialog.exec_() == QDialog.Accepted:
# 设置打印机
printer.setOutputFormat(QPrinter.PdfFormat)
# 将HTML转换为PDF
painter = QPainter(printer)
painter.setRenderHint(QPainter.Antialiasing)
painter.translate(printer纸张宽度(), 0)
painter.drawText(-printer纸张宽度(), -10, Qt.AlignLeft | Qt.AlignBottom, pdf_bytes)
# 打印
painter.end()
printer.commit()
# 显示打印结果对话框,如果需要的话
QMessageBox.information(self, "Print Preview", "PDF has been printed.")
# ... (其余窗口构建代码)
if __name__ == '__main__':
app = QApplication([])
mainWin = MainWindow()
mainWin.show()
app.exec_()
```
在这个例子中,我们首先从工具栏触发`print_pdf`函数,在函数里获取`QWebEngineView`的内容并转换成HTML字节流。接着创建一个`QPrinter`实例,并用它创建一个`QPrintDialog`。如果用户接受打印,我们将HTML内容绘制到打印机上,并最终确认打印操作。