如何打印QTableView

  • Z时代
  • 2024-01-10
  • 分类：问答

我有一个连接到mysql数据库并在QTableView中显示查询结果的Python和PySide应用程序。我需要打印表视图的内容。这是一些代码：

    self.db_table = QtGui.QTableView(self)
    self.model =  QtSql.QSqlQueryModel()
    self.model.setQuery("SELECT * FROM simpsons")
    self.model.setHeaderData(1, QtCore.Qt.Horizontal, self.tr("First Name"))
    self.model.setHeaderData(2, QtCore.Qt.Horizontal, self.tr("Last Name"))
    self.db_table.setModel(self.model)
    self.print_btn = QtGui.QPushButton("Print")
    self.print_btn.clicked.connect(self.print_btn_clicked)
    def print_btn_clicked(self):
        printDialog = QtGui.QPrintDialog(self.printer, self)
        if printDialog.exec_() == QtGui.QDialog.Accepted:
         #printing code

我找不到为此提供示例，并且我对文档的了解不多，因此希望获得一些帮助

回答：

一种方法是将表内容转储到中QTextDocument，然后打印出来。

以下演示使用了一个简单的文本表，但是可以使用html来获取更复杂的格式：

from PyQt4 import QtGui, QtCore
class Window(QtGui.QWidget):
    def __init__(self, rows, columns):
        QtGui.QWidget.__init__(self)
        self.table = QtGui.QTableView(self)
        model =  QtGui.QStandardItemModel(rows, columns, self.table)
        for row in range(rows):
            for column in range(columns):
                item = QtGui.QStandardItem('(%d, %d)' % (row, column))
                item.setTextAlignment(QtCore.Qt.AlignCenter)
                model.setItem(row, column, item)
        self.table.setModel(model)
        self.buttonPrint = QtGui.QPushButton('Print', self)
        self.buttonPrint.clicked.connect(self.handlePrint)
        self.buttonPreview = QtGui.QPushButton('Preview', self)
        self.buttonPreview.clicked.connect(self.handlePreview)
        layout = QtGui.QGridLayout(self)
        layout.addWidget(self.table, 0, 0, 1, 2)
        layout.addWidget(self.buttonPrint, 1, 0)
        layout.addWidget(self.buttonPreview, 1, 1)
    def handlePrint(self):
        dialog = QtGui.QPrintDialog()
        if dialog.exec_() == QtGui.QDialog.Accepted:
            self.handlePaintRequest(dialog.printer())
    def handlePreview(self):
        dialog = QtGui.QPrintPreviewDialog()
        dialog.paintRequested.connect(self.handlePaintRequest)
        dialog.exec_()
    def handlePaintRequest(self, printer):
        document = QtGui.QTextDocument()
        cursor = QtGui.QTextCursor(document)
        model = self.table.model()
        table = cursor.insertTable(
            model.rowCount(), model.columnCount())
        for row in range(table.rows()):
            for column in range(table.columns()):
                cursor.insertText(model.item(row, column).text())
                cursor.movePosition(QtGui.QTextCursor.NextCell)
        document.print_(printer)
if __name__ == '__main__':
    import sys
    app = QtGui.QApplication(sys.argv)
    window = Window(25, 2)
    window.resize(300, 400)
    window.show()
    sys.exit(app.exec_())

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