from PyQt5.QtWidgets import (QApplication, QWidget, QTableWidget,QPushButton, QVBoxLayout, QTableWidgetItem) from PyQt5.QtGui import QPixmap, QPainter, QImage, QTextDocument from PyQt5.QtPrintSupport import QPrinter, QPrintDialog, QPrintPreviewDialog from PyQt5.QtCore import QRect, QPoint, QSize , Qt def on_picButton_clicked(): printer =QPrinter(QPrinter.HighResolution) #/* 打印预览 */ preview =QPrintPreviewDialog(printer,widget ) """ * QPrintPreviewDialog类提供了一个打印预览对话框,里面功能比较全, * paintRequested(QPrinter *printer)是系统提供的, * 当preview.exec()执行时该信号被触发, * plotPic(QPrinter *printer)是用户自定义的槽函数,图像的绘制就在这个函数里。 """ preview.paintRequested.connect(plotPic) preview.exec(); #/* 等待预览界面退出 */ def plotPic(printer): painter =QPainter(printer); image = QPixmap() image=widget.grab(QRect( QPoint( 0, 0 ), QSize( widget.size().width(), widget.size().height() ) ) )# /* 绘制窗口至画布 */ #QRect rect = painter.viewport(); #QSize size = image.size(); size.scale(rect.size(), Qt.KeepAspectRatio)# //此处保证图片显示完整 painter.setViewport(rect.x(), rect.y(),size.width(), size.height()); painter.setWindow(image.rect()); painter.drawPixmap(0,0,image); #/* 数据显示至预览界面 */ import sys app = QApplication(sys.argv) tablewidget = QTableWidget() ## 设置列数 tablewidget.setColumnCount(4) tablewidget.horizontalHeader().setDefaultSectionSize(150) ## QStringList在PyQt5 header= ["name", "last modify time","type", "size"] tablewidget.setHorizontalHeaderLabels(header) tablewidget.insertRow(0) tablewidget.insertRow(0) pItem1 = QTableWidgetItem("aa" ) pItem2 = QTableWidgetItem("bb" ) pItem3 = QTableWidgetItem("cc" ) pItem4 = QTableWidgetItem("dd" ) tablewidget.setItem( 0, 0, pItem1 ) tablewidget.setItem( 0, 1, pItem2 ) tablewidget.setItem( 0, 2, pItem3 ) tablewidget.setItem( 0, 3, pItem4 ) tablewidget.setMinimumSize(800, 600) button = QPushButton(‘打印界面‘) button.clicked.connect(on_picButton_clicked) widget = QWidget() layout = QVBoxLayout(widget) layout.addWidget(button) layout.addWidget(button_txt) layout.addWidget(tablewidget) widget.show() sys.exit(app.exec_())
时间: 2024-11-05 17:24:17