python3+PyQt5实现文档打印功能


Posted in Python onApril 24, 2018

本文通过Python3+PyQt5实现《python Qt Gui 快速编程》这本书13章文档打印功能。本文共通过三种方式:

1、使用HTML和QTextDOcument打印文档
2、使用QTextCusor和QTextDocument打印文档
3、使用QPainter打印文档

使用Qpainter打印文档比QTextDocument需要更操心和复杂的计算,但是QPainter确实能够对输出赋予完全控制。

#!/usr/bin/env python3
import math
import sys
import html
from PyQt5.QtPrintSupport import QPrinter,QPrintDialog
from PyQt5.QtCore import (QDate, QRectF, Qt)
from PyQt5.QtWidgets import (QApplication,QDialog, 
 QHBoxLayout,QPushButton, QTableWidget, QTableWidgetItem,QVBoxLayout)
from PyQt5.QtGui import (QFont,QFontMetrics,QPainter,QTextCharFormat,
  QTextCursor, QTextDocument, QTextFormat,
  QTextOption, QTextTableFormat,
  QPixmap,QTextBlockFormat)
import qrc_resources


from PyQt5.QtPrintSupport import QPrinter,QPrintDialog
from PyQt5.QtCore import (QDate, QRectF, Qt)
from PyQt5.QtWidgets import (QApplication,QDialog, 
 QHBoxLayout,QPushButton, QTableWidget, QTableWidgetItem,QVBoxLayout)
from PyQt5.QtGui import (QFont,QFontMetrics,QPainter,QTextCharFormat,
  QTextCursor, QTextDocument, QTextFormat,
  QTextOption, QTextTableFormat,
  QPixmap,QTextBlockFormat)
import qrc_resources
DATE_FORMAT = "MMM d, yyyy"


class Statement(object):

 def __init__(self, company, contact, address):
 self.company = company
 self.contact = contact
 self.address = address
 self.transactions = [] # List of (QDate, float) two-tuples


 def balance(self):
 return sum([amount for date, amount in self.transactions])


class Form(QDialog):

 def __init__(self, parent=None):
 super(Form, self).__init__(parent)

 self.printer = QPrinter()
 self.printer.setPageSize(QPrinter.Letter)
 self.generateFakeStatements()
 self.table = QTableWidget()
 self.populateTable()

 cursorButton = QPushButton("Print via Q&Cursor")
 htmlButton = QPushButton("Print via &HTML")
 painterButton = QPushButton("Print via Q&Painter")
 quitButton = QPushButton("&Quit")

 buttonLayout = QHBoxLayout()
 buttonLayout.addWidget(cursorButton)
 buttonLayout.addWidget(htmlButton)
 buttonLayout.addWidget(painterButton)
 buttonLayout.addStretch()
 buttonLayout.addWidget(quitButton)
 layout = QVBoxLayout()
 layout.addWidget(self.table)
 layout.addLayout(buttonLayout)
 self.setLayout(layout)

 cursorButton.clicked.connect(self.printViaQCursor)
 htmlButton.clicked.connect(self.printViaHtml)
 painterButton.clicked.connect(self.printViaQPainter)
 quitButton.clicked.connect(self.accept)

 self.setWindowTitle("Printing")


 def generateFakeStatements(self):
 self.statements = []
 statement = Statement("Consality", "Ms S. Royal",
 "234 Rue Saint Hyacinthe, 750201, Paris")
 statement.transactions.append((QDate(2007, 8, 11), 2342))
 statement.transactions.append((QDate(2007, 9, 10), 2342))
 statement.transactions.append((QDate(2007, 10, 9), 2352))
 statement.transactions.append((QDate(2007, 10, 17), -1500))
 statement.transactions.append((QDate(2007, 11, 12), 2352))
 statement.transactions.append((QDate(2007, 12, 10), 2352))
 statement.transactions.append((QDate(2007, 12, 20), -7500))
 statement.transactions.append((QDate(2007, 12, 20), 250))
 statement.transactions.append((QDate(2008, 1, 10), 2362))
 self.statements.append(statement)

 statement = Statement("Demamitur Plc", "Mr G. Brown",
 "14 Tall Towers, Tower Hamlets, London, WC1 3BX")
 statement.transactions.append((QDate(2007, 5, 21), 871))
 statement.transactions.append((QDate(2007, 6, 20), 542))
 statement.transactions.append((QDate(2007, 7, 20), 1123))
 statement.transactions.append((QDate(2007, 7, 20), -1928))
 statement.transactions.append((QDate(2007, 8, 13), -214))
 statement.transactions.append((QDate(2007, 9, 15), -3924))
 statement.transactions.append((QDate(2007, 9, 15), 2712))
 statement.transactions.append((QDate(2007, 9, 15), -273))
 #statement.transactions.append((QDate(2007, 11, 8), -728))
 #statement.transactions.append((QDate(2008, 2, 7), 228))
 #statement.transactions.append((QDate(2008, 3, 13), -508))
 #statement.transactions.append((QDate(2008, 3, 22), -2481))
 #statement.transactions.append((QDate(2008, 4, 5), 195))
 self.statements.append(statement)


 def populateTable(self):
 headers = ["Company", "Contact", "Address", "Balance"]
 self.table.setColumnCount(len(headers))
 self.table.setHorizontalHeaderLabels(headers)
 self.table.setRowCount(len(self.statements))
 for row, statement in enumerate(self.statements):
 self.table.setItem(row, 0, QTableWidgetItem(statement.company))
 self.table.setItem(row, 1, QTableWidgetItem(statement.contact))
 self.table.setItem(row, 2, QTableWidgetItem(statement.address))
 item = QTableWidgetItem("$ {0:,.2f}".format(float(statement.balance())))
 item.setTextAlignment(Qt.AlignRight|Qt.AlignVCenter)
 self.table.setItem(row, 3, item)
 self.table.resizeColumnsToContents()


 def printViaHtml(self):
 htmltext = ""
 for statement in self.statements:
 date = QDate.currentDate().toString(DATE_FORMAT)
 address = html.escape(statement.address).replace(
  ",", "<br>")
 contact = html.escape(statement.contact)
 balance = statement.balance()
 htmltext += ("<p align=right><img src=':/logo.png'></p>"
  "<p align=right>Greasy Hands Ltd."
  "<br>New Lombard Street"
  "<br>London<br>WC13 4PX<br>{0}</p>"
  "<p>{1}</p><p>Dear {2},</p>"
  "<p>The balance of your account is $ {3:,.2f}.").format(
  date, address, contact, float(balance))
 if balance < 0:
 htmltext += (" <p><font color=red><b>Please remit the "
  "amount owing immediately.</b></font>")
 else:
 htmltext += (" We are delighted to have done business "
  "with you.")
 htmltext += ("</p><p> </p><p>"
  "<table border=1 cellpadding=2 "
  "cellspacing=2><tr><td colspan=3>"
  "Transactions</td></tr>")
 for date, amount in statement.transactions:
 color, status = "black", "Credit"
 if amount < 0:
  color, status = "red", "Debit"
 htmltext += ("<tr><td align=right>{0}</td>"
  "<td>{1}</td><td align=right>"
  "<font color={2}>$ {3:,.2f}</font></td></tr>".format(
  date.toString(DATE_FORMAT), status, color,float(abs(amount))))
 htmltext += ("</table></p><p style='page-break-after:always;'>"
  "We hope to continue doing "
  "business with you,<br>Yours sincerely,"
  "<br><br>K. Longrey, Manager</p>")
 dialog = QPrintDialog(self.printer, self)
 if dialog.exec_():
 document = QTextDocument()
 document.setHtml(htmltext)
 document.print_(self.printer)

 def printViaQCursor(self):
 dialog = QPrintDialog(self.printer, self)
 if not dialog.exec_():
 return
 logo = QPixmap(":/logo.png")
 headFormat = QTextBlockFormat()
 headFormat.setAlignment(Qt.AlignLeft)
 headFormat.setTextIndent(
 self.printer.pageRect().width() - logo.width() - 216)
 bodyFormat = QTextBlockFormat()
 bodyFormat.setAlignment(Qt.AlignJustify)
 lastParaBodyFormat = QTextBlockFormat(bodyFormat)
 lastParaBodyFormat.setPageBreakPolicy(
 QTextFormat.PageBreak_AlwaysAfter)
 rightBodyFormat = QTextBlockFormat()
 rightBodyFormat.setAlignment(Qt.AlignRight)
 headCharFormat = QTextCharFormat()
 headCharFormat.setFont(QFont("Helvetica", 10))
 bodyCharFormat = QTextCharFormat()
 bodyCharFormat.setFont(QFont("Times", 11))
 redBodyCharFormat = QTextCharFormat(bodyCharFormat)
 redBodyCharFormat.setForeground(Qt.red)
 tableFormat = QTextTableFormat()
 tableFormat.setBorder(1)
 tableFormat.setCellPadding(2)

 document = QTextDocument()
 cursor = QTextCursor(document)
 mainFrame = cursor.currentFrame()
 page = 1
 for statement in self.statements:
 cursor.insertBlock(headFormat, headCharFormat)
 cursor.insertImage(":/logo.png")
 for text in ("Greasy Hands Ltd.", "New Lombard Street",
  "London", "WC13 4PX",
  QDate.currentDate().toString(DATE_FORMAT)):
 cursor.insertBlock(headFormat, headCharFormat)
 cursor.insertText(text)
 for line in statement.address.split(", "):
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 cursor.insertText(line)
 cursor.insertBlock(bodyFormat)
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 cursor.insertText("Dear {0},".format(statement.contact))
 cursor.insertBlock(bodyFormat)
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 balance = statement.balance()
 cursor.insertText("The balance of your account is $ {0:,.2f}.".format(float(balance)))
 if balance < 0:
 cursor.insertBlock(bodyFormat, redBodyCharFormat)
 cursor.insertText("Please remit the amount owing "
   "immediately.")
 else:
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 cursor.insertText("We are delighted to have done "
   "business with you.")
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 cursor.insertText("Transactions:")
 table = cursor.insertTable(len(statement.transactions), 3,
   tableFormat)
 row = 0
 for date, amount in statement.transactions:
 cellCursor = table.cellAt(row, 0).firstCursorPosition()
 cellCursor.setBlockFormat(rightBodyFormat)
 cellCursor.insertText(date.toString(DATE_FORMAT),
   bodyCharFormat)
 cellCursor = table.cellAt(row, 1).firstCursorPosition()
 if amount > 0:
  cellCursor.insertText("Credit", bodyCharFormat)
 else:
  cellCursor.insertText("Debit", bodyCharFormat)
 cellCursor = table.cellAt(row, 2).firstCursorPosition()
 cellCursor.setBlockFormat(rightBodyFormat)
 format = bodyCharFormat
 if amount < 0:
  format = redBodyCharFormat
 cellCursor.insertText("$ {0:,.2f}".format(float(amount)), format)
 row += 1
 cursor.setPosition(mainFrame.lastPosition())
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 cursor.insertText("We hope to continue doing business "
  "with you,")
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 cursor.insertText("Yours sincerely")
 cursor.insertBlock(bodyFormat)
 if page == len(self.statements):
 cursor.insertBlock(bodyFormat, bodyCharFormat)
 else:
 cursor.insertBlock(lastParaBodyFormat, bodyCharFormat)
 cursor.insertText("K. Longrey, Manager")
 page += 1
 document.print_(self.printer)


 def printViaQPainter(self):
 dialog = QPrintDialog(self.printer, self)
 if not dialog.exec_():
 return
 LeftMargin = 72
 sansFont = QFont("Helvetica", 10)
 sansLineHeight = QFontMetrics(sansFont).height()
 serifFont = QFont("Times", 11)
 fm = QFontMetrics(serifFont)
 DateWidth = fm.width(" September 99, 2999 ")
 CreditWidth = fm.width(" Credit ")
 AmountWidth = fm.width(" W999999.99 ")
 serifLineHeight = fm.height()
 logo = QPixmap(":/logo.png")
 painter = QPainter(self.printer)
 pageRect = self.printer.pageRect()
 page = 1
 for statement in self.statements:
 painter.save()
 y = 0
 x = pageRect.width() - logo.width() - LeftMargin
 painter.drawPixmap(x, 0, logo)
 y += logo.height() + sansLineHeight
 painter.setFont(sansFont)
 painter.drawText(x, y, "Greasy Hands Ltd.")
 y += sansLineHeight
 painter.drawText(x, y, "New Lombard Street")
 y += sansLineHeight
 painter.drawText(x, y, "London")
 y += sansLineHeight
 painter.drawText(x, y, "WC13 4PX")
 y += sansLineHeight
 painter.drawText(x, y,
  QDate.currentDate().toString(DATE_FORMAT))
 y += sansLineHeight
 painter.setFont(serifFont)
 x = LeftMargin
 for line in statement.address.split(", "):
 painter.drawText(x, y, line)
 y += serifLineHeight
 y += serifLineHeight
 painter.drawText(x, y, "Dear {0},".format(statement.contact))
 y += serifLineHeight

 balance = statement.balance()
 painter.drawText(x, y, "The balance of your account is $ {0:,.2f}".format(float(balance)))
 y += serifLineHeight
 if balance < 0:
 painter.setPen(Qt.red)
 text = "Please remit the amount owing immediately."
 else:
 text = ("We are delighted to have done business "
  "with you.")
 painter.drawText(x, y, text)
 painter.setPen(Qt.black)
 y += int(serifLineHeight * 1.5)
 painter.drawText(x, y, "Transactions:")
 y += serifLineHeight

 option = QTextOption(Qt.AlignRight|Qt.AlignVCenter)
 for date, amount in statement.transactions:
 x = LeftMargin
 h = int(fm.height() * 1.3)
 painter.drawRect(x, y, DateWidth, h)
 painter.drawText(
  QRectF(x + 3, y + 3, DateWidth - 6, h - 6),
  date.toString(DATE_FORMAT), option)
 x += DateWidth
 painter.drawRect(x, y, CreditWidth, h)
 text = "Credit"
 if amount < 0:
  text = "Debit"
 painter.drawText(
  QRectF(x + 3, y + 3, CreditWidth - 6, h - 6),
  text, option)
 x += CreditWidth
 painter.drawRect(x, y, AmountWidth, h)
 if amount < 0:
  painter.setPen(Qt.red)
 painter.drawText(
  QRectF(x + 3, y + 3, AmountWidth - 6, h - 6),
  "$ {0:,.2f}".format(float(amount)),
  option)
 painter.setPen(Qt.black)
 y += h
 y += serifLineHeight
 x = LeftMargin
 painter.drawText(x, y, "We hope to continue doing "
   "business with you,")
 y += serifLineHeight
 painter.drawText(x, y, "Yours sincerely")
 y += serifLineHeight * 3
 painter.drawText(x, y, "K. Longrey, Manager")
 x = LeftMargin
 y = pageRect.height() - 72
 painter.drawLine(x, y, pageRect.width() - LeftMargin, y)
 y += 2
 font = QFont("Helvetica", 9)
 font.setItalic(True)
 painter.setFont(font)
 option = QTextOption(Qt.AlignCenter)
 option.setWrapMode(QTextOption.WordWrap)
 painter.drawText(
  QRectF(x, y, pageRect.width() - 2 * LeftMargin, 31),
  "The contents of this letter are for information "
  "only and do not form part of any contract.",
  option)
 page += 1
 if page <= len(self.statements):
 self.printer.newPage()
 painter.restore()


if __name__ == "__main__":
 app = QApplication(sys.argv)
 form = Form()
 form.show()
 app.exec_()

运行结果:

python3+PyQt5实现文档打印功能

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持三水点靠木。

Python 相关文章推荐
跟老齐学Python之dict()的操作方法
Sep 24 Python
python实现DES加密解密方法实例详解
Jun 30 Python
Python多继承顺序实例分析
May 26 Python
对python读取zip压缩文件里面的csv数据实例详解
Feb 08 Python
django-rest-swagger对API接口注释的方法
Aug 29 Python
Python之Numpy的超实用基础详细教程
Oct 23 Python
python3 tkinter实现添加图片和文本
Nov 26 Python
关于ZeroMQ 三种模式python3实现方式
Dec 23 Python
Python是怎样处理json模块的
Jul 16 Python
Python如何定义有可选参数的元类
Jul 31 Python
Django DRF APIView源码运行流程详解
Aug 17 Python
Pycharm的Available Packages为空的解决方法
Sep 18 Python
Python结合ImageMagick实现多张图片合并为一个pdf文件的方法
Apr 24 #Python
python3+PyQt5实现柱状图
Apr 24 #Python
python3+PyQt5自定义视图详解
Apr 24 #Python
python自动重试第三方包retrying模块的方法
Apr 24 #Python
python3+PyQt5泛型委托详解
Apr 24 #Python
python去除扩展名的实例讲解
Apr 23 #Python
python3 遍历删除特定后缀名文件的方法
Apr 23 #Python
You might like
php中的常用魔术方法汇总
2016/02/14 PHP
laravel 框架实现无限级分类的方法示例
2019/10/31 PHP
tp5.1 框架数据库高级查询技巧实例总结
2020/05/25 PHP
javascript iframe编程相关代码
2009/12/28 Javascript
基本jquery的控制tabs打开的数量的代码
2010/10/17 Javascript
用jQuery模拟页面加载进度条的实现代码
2011/12/19 Javascript
基于jQuery的动态增删改查表格信息,可左键/右键提示(原创自Zjmainstay)
2012/07/31 Javascript
JS实现跟随鼠标闪烁转动色块的方法
2015/02/26 Javascript
php结合imgareaselect实现图片裁剪
2015/07/05 Javascript
Javascript使用function创建类的两种方法(推荐)
2016/11/19 Javascript
基于slideout.js实现移动端侧边栏滑动特效
2016/11/28 Javascript
详解vue2.0组件通信各种情况总结与实例分析
2017/03/22 Javascript
vue使用element-ui的el-input监听不了回车事件的解决方法
2018/01/12 Javascript
最简单的JS实现json转csv的方法
2019/01/10 Javascript
element-ui table组件如何使用render属性的实现
2019/11/04 Javascript
nodejs如何在package.json中设置多条启动命令
2020/03/16 NodeJs
JavaScript中arguments的使用方法详解
2020/12/20 Javascript
详解为什么Vue中的v-if和v-for不建议一起用
2021/01/13 Vue.js
[12:29]2018国际邀请赛 开幕秀
2018/08/22 DOTA
[44:40]KG vs LGD 2019国际邀请赛小组赛 BO2 第一场 8.15
2019/08/16 DOTA
Python中使用ConfigParser解析ini配置文件实例
2014/08/30 Python
Python可变参数函数用法实例
2015/07/07 Python
python 字典(dict)按键和值排序
2016/06/28 Python
Python模拟用户登录验证
2017/09/11 Python
Pandas数据离散化原理及实例解析
2019/11/16 Python
Python+OpenCV+图片旋转并用原底色填充新四角的例子
2019/12/12 Python
基于selenium及python实现下拉选项定位select
2020/07/22 Python
Snapfish英国:在线照片打印和个性化照片礼品
2017/01/13 全球购物
Elemis美国官网:英国的第一豪华护肤品牌
2018/03/15 全球购物
多媒体编辑专业毕业生推荐信
2013/11/05 职场文书
毕业生就业自荐书
2013/12/15 职场文书
小学开学典礼主持词
2014/03/19 职场文书
实习生评语
2014/04/26 职场文书
2015年团支书工作总结
2015/04/03 职场文书
小学四年级作文之写景
2019/08/23 职场文书
spring boot中nativeQuery的用法
2021/07/26 Java/Android