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
Python中set与frozenset方法和区别详解
May 23 Python
Python中分支语句与循环语句实例详解
Sep 13 Python
python linecache 处理固定格式文本数据的方法
Jan 08 Python
Ubuntu18.04下python版本完美切换的解决方法
Jun 14 Python
Django的models中on_delete参数详解
Jul 16 Python
python爬虫 模拟登录人人网过程解析
Jul 31 Python
如何用Python来理一理红楼梦里的那些关系
Aug 14 Python
python3使用GUI统计代码量
Sep 18 Python
python程序 创建多线程过程详解
Sep 23 Python
django框架中ajax的使用及避开CSRF 验证的方式详解
Dec 11 Python
pytorch进行上采样的种类实例
Feb 18 Python
Python如何利用Har文件进行遍历指定字典替换提交的数据详解
Nov 05 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
隐性调用php程序的方法
2009/03/09 PHP
PHP 遍历文件实现代码
2011/05/04 PHP
phpstrom使用xdebug配置方法
2013/12/17 PHP
php加速器eAccelerator的配置参数、API详解
2014/05/05 PHP
php分页查询的简单实现代码
2017/03/14 PHP
JQuery下的Live方法和$.browser方法使用代码
2010/06/02 Javascript
js中有关IE版本检测
2012/01/04 Javascript
javascripit实现密码强度检测代码分享
2013/12/12 Javascript
JS删除字符串中重复字符方法
2014/03/09 Javascript
javascript图片滑动效果实现
2021/01/28 Javascript
文本框只能输入数字的js代码(含小数点)
2016/07/10 Javascript
JS获取和修改元素样式的实例代码
2016/08/06 Javascript
JavaScript生成.xls文件的代码
2016/12/22 Javascript
在vscode中统一vue编码风格的方法
2018/02/22 Javascript
jQuery实现的监听导航滚动置顶状态功能示例
2018/07/23 jQuery
Vue.js组件使用props传递数据的方法
2019/10/19 Javascript
JavaScript运行机制实例分析
2020/04/11 Javascript
快速解决element的autofocus失效问题
2020/09/08 Javascript
windows下python安装pip图文教程
2018/05/25 Python
解决安装tensorflow遇到无法卸载numpy 1.8.0rc1的问题
2018/06/13 Python
python实现俄罗斯方块
2018/06/26 Python
使用Python函数进行模块化的实现
2019/11/15 Python
django从后台返回html代码的实例
2020/03/11 Python
pyCharm 设置调试输出窗口中文显示方式(字符码转换)
2020/06/09 Python
Python Map 函数的使用
2020/08/28 Python
html5+css3进度条倒计时动画特效代码【推荐】
2016/03/08 HTML / CSS
Redbubble法国:由独立艺术家设计的独特产品
2019/01/08 全球购物
意大利时尚精品店:Nugnes 1920
2020/02/10 全球购物
分布式数据库需要考虑哪些问题
2013/12/08 面试题
机械专业应届生求职信
2013/09/21 职场文书
安全标准化实施方案
2014/02/20 职场文书
幼儿园门卫安全责任书
2015/05/08 职场文书
看上去很美观后感
2015/06/10 职场文书
学校扫黄打非工作总结
2015/10/15 职场文书
廉政党课工作报告案例
2019/06/21 职场文书
【海涛dota解说】DCG联赛第一周 LGD VS DH
2022/04/01 DOTA