python3+PyQt5는 문서 인쇄 기능을 구현합니다.

이 글은 주로 python3+PyQt5의 문서 인쇄 기능을 소개합니다. 관심 있는 친구들은 참고할 수 있습니다.

이 글은 Python3+PyQt5를 사용하여 "python Qt Gui Fast" 프로그래밍을 구현합니다. 책 13장 문서 인쇄 기능. 이 기사에서는 세 가지 방법을 사용합니다.

1. HTML 및 QTextDOcument를 사용하여 문서 인쇄
2. QTextCusor 및 QTextDocument를 사용하여 문서 인쇄

Qpainter를 사용하여 문서 인쇄에는 더 많은 고민과 복잡한 계산이 필요합니다. QTextDocument.보다 그러나 QPainter는 출력을 완전히 제어할 수 있습니다.

#!/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=&#39;:/logo.png&#39;></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=&#39;page-break-after:always;&#39;>"
   "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_()

실행 결과:

관련 권장 사항:

python3+PyQt5는 멀티 스레딩을 지원하는 페이지 인덱서 애플리케이션을 구현합니다

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