问题描述
我想打印一些qtdesigner设计的文字和图片.
I want to print some text and image designed by qtdesigner.
如何更改 QTextDocument
中的字体和其他格式?
How could I change font and another format in QTextDocument
?
from PyQt5 import QtCore, QtGui, QtWidgets, QtPrintSupport
class Ui_MainWindow(object):
def handlePrint(self):
dialog = QtPrintSupport.QPrintDialog()
if dialog.exec_() == QtWidgets.QDialog.Accepted:
self.handlePaintRequest(dialog.printer())
def handlePreview(self):
dialog = QtPrintSupport.QPrintPreviewDialog()
dialog.paintRequested.connect(self.handlePaintRequest)
dialog.exec_()
def handlePaintRequest(self, printer):
document = QtGui.QTextDocument()
cursor = QtGui.QTextCursor(document)
cursor.insertImage('logo4.jpg')
cursor.insertBlock()
cursor.insertText('MY TEXT')
document.print_(printer)
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton_print_previw = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_print_previw.setGeometry(QtCore.QRect(90, 270, 251, 91))
font = QtGui.QFont()
font.setPointSize(15)
self.pushButton_print_previw.setFont(font)
self.pushButton_print_previw.setObjectName("pushButton_print_previw")
self.pushButton_print = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_print.setGeometry(QtCore.QRect(440, 270, 251, 91))
font = QtGui.QFont()
font.setPointSize(15)
self.pushButton_print.setFont(font)
self.pushButton_print.setObjectName("pushButton_print")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
############################################################
self.pushButton_print_previw.clicked.connect(self.handlePreview)
############################################################
############################################################
self.pushButton_print.clicked.connect(self.handlePrint)
############################################################
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton_print_previw.setText(_translate("MainWindow", "Print Preview"))
self.pushButton_print.setText(_translate("MainWindow", "Print"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
推荐答案
document.print_(printer)
很方便,但也不够灵活.
document.print_(printer)
is very convenient but it is not a little flexible.
因为您不使用QTextEdit
,所以您只能通过您的代码编辑格式信息.(提前setHtml除外.)如果你喜欢绘制QPrinter
文档,你可以使用QPainter
.
Because you don't use QTextEdit
, you must edit the format information by your code only. (except for setHtml in advance.)If you draw QPrinter
document as you like, you can use QPainter
.
通常,虽然paintEvent(self, event)
中使用了QPainter
,但只有将QPaintDevice
的子类设置为QPainter,你可以随心所欲地画画.但您必须准确计算分配额.
Normarly, although QPainter
is used in paintEvent(self, event)
, only if you set a subclass of QPaintDevice
to constructor of QPainter
, you can draw as you like.But you must calculate the allocation exactly.
QPrinter 是 QPaintDevice
的子类.
QPrinter is a subclass of QPaintDevice
.
陷阱
QPainter.drawText
的左上角是 Text 的底线.
The topleft of QPainter.drawText
is the bottom line of Text.
我的文字
这是代码.
# -*- coding: utf-8 -*-
from PyQt5 import QtCore, QtGui, QtWidgets, QtPrintSupport
class Ui_MainWindow(object):
def handlePrint(self):
dialog = QtPrintSupport.QPrintDialog()
if dialog.exec_() == QtWidgets.QDialog.Accepted:
self.handlePaintRequest(dialog.printer())
def handlePreview(self):
dialog = QtPrintSupport.QPrintPreviewDialog()
dialog.paintRequested.connect(self.handlePaintRequest)
dialog.exec_()
def handlePaintRequest(self, printer):
document = QtGui.QTextDocument()
# cursor = QtGui.QTextCursor(document)
# cursor.insertImage('logo4.jpg')
# cursor.insertBlock()
# cursor.insertText('MY TEXT')
# document.print_(printer)
documentRootFrameFormat = document.rootFrame().frameFormat()
documentLeftMargin = documentRootFrameFormat.leftMargin()
documentTopMargin = documentRootFrameFormat.topMargin()
drawn_im = QtGui.QImage("logo4.jpg")
drawn_im_height = drawn_im.height()
painter = QtGui.QPainter(printer)
painter.drawImage(documentLeftMargin, documentTopMargin, drawn_im)
painter_font = painter.font()
#you can set flag which font is used.
custom_font = QtGui.QFont("Segoe UI Light", 18)
fontMetricsF = QtGui.QFontMetricsF(custom_font)
painter.save()
painter.setFont(custom_font)
height_fontMetricsF = fontMetricsF.height()
painter.drawText(documentLeftMargin, documentTopMargin + drawn_im_height + height_fontMetricsF, 'MY TEXT')
painter.restore()
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.pushButton_print_previw = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_print_previw.setGeometry(QtCore.QRect(90, 270, 251, 91))
font = QtGui.QFont()
font.setPointSize(15)
self.pushButton_print_previw.setFont(font)
self.pushButton_print_previw.setObjectName("pushButton_print_previw")
self.pushButton_print = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_print.setGeometry(QtCore.QRect(440, 270, 251, 91))
font = QtGui.QFont()
font.setPointSize(15)
self.pushButton_print.setFont(font)
self.pushButton_print.setObjectName("pushButton_print")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
############################################################
self.pushButton_print_previw.clicked.connect(self.handlePreview)
############################################################
############################################################
self.pushButton_print.clicked.connect(self.handlePrint)
############################################################
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton_print_previw.setText(_translate("MainWindow", "Print Preview"))
self.pushButton_print.setText(_translate("MainWindow", "Print"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
我的结果
如果你想使用QTextCursor
,你可以设置Font &使用QTextCursor
的方法格式化.
If you want to use QTextCursor
, you can set Font & format by using the method of QTextCursor
.
您可以通过此代码获得类似的结果.如果你不希望高度控制,我推荐这个.
You can get the similar result by this code.I recommend this if you don't hope high control.
其他解决方案
def handlePaintRequest(self, printer):
document = QtGui.QTextDocument()
cursor = QtGui.QTextCursor(document)
cursor.insertImage("logo4.jpg")
cursor.insertBlock()
charFormat = cursor.charFormat()
charFormat.setFont(QtGui.QFont("Segoe UI Light", 18))
cursor.insertText('MY TEXT', charFormat)
document.print_(printer)
这篇关于如何更改 QTextDocument 中图像的字体和大小?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!