我的页码显示有错误，我知道原因和位置但我不知道如何解决它们（PyQt）
My page number display has bugs, I know why and where but I don't know how to solve them (PyQt)
我正在制作一个漫画查看器，但我遇到了错误。
所以我制作了一个程序，每次我们点击 "File" 然后 "test" 时都会打开一个新选项卡。
我创建了一个模拟随机书籍长度的列表。
当我们在第一个选项卡上按下左右按钮时，会显示我们所在的页面（例如"page 3 of 23"）
但是，问题是当我们打开新标签时，页码显示存在错误。第一个标签中的页码相互重叠，只有最后打开的标签显示正确。
我知道为什么。当我们打开一个新标签时，我们通过 Open(self) 函数打开一个标签，然后 self.pageNumDisp = QLabel("Page : 0 of "+str(len(self.image_list)-1)) 在最后一个标签的页码显示上打印其文本，然后将其添加到新标签中。
问题是我不知道如何解决这个错误，非常欢迎您的帮助。
实际上我在使用 self.prevpagebutton.setEnabled(True/False) 时遇到了类似的问题，最后我只是在书在第一页和最后一页时没有禁用按钮，而是只是开始阅读所有内容结束了，但实际问题只是让我确认了问题出在哪里。
这是添加新选项卡、创建页码列表并设置第 0 页显示的部分：
def Open(self):
n = str(self.n)
self.i[n] = 0
self.tab[n] = QWidget()
self.tab[n].objectName()
self.tab[n].layout = QGridLayout()
self.bookNo = self.bookNo + 1
self.image_list = []
for i in range(1,randint(3,50)):
self.image_list.append(str(i))
self.whichList[self.bookNo] = self.image_list
self.pageNumDisp = QLabel("Page : 0 of "+str(len(self.image_list)-1))
self.tab[n].layout.addWidget(self.pageNumDisp,1, 1)
self.nextpagebutton = QPushButton(">", self)
self.nextpagebutton.setObjectName('>{}'.format(self.n))
self.nextpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.nextpagebutton, 0, 2)
self.nextpagebutton.clicked.connect(self.readnext)
self.prevpagebutton = QPushButton("<", self)
self.prevpagebutton.setObjectName('<{}'.format(self.n))
self.prevpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.prevpagebutton, 0, 0)
self.prevpagebutton.clicked.connect(self.readprev)
self.index[n] = self.tabs.addTab(self.tab[n], "Tab " + str(self.n))
self.tab[n].setLayout(self.tab[n].layout)
self.n = int(self.n) + 1
print(self.i)
这是根据我们是按下右按钮还是左按钮来更改显示的页码的部分：
def readnext(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] += 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
def readprev(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] -= 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
这里有我的完整程序，你可以试试，它有效:
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QGridLayout, QWidget, QPushButton, QAction, QStatusBar, QToolBar, QTabWidget
from PyQt5.QtCore import QCoreApplication
from random import randint
class FenetrePrincipale(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Liseuse de Bandes Dessinées")
self.left = 10
self.top = 10
self.width = 900
self.height = 850
self.i = 0
self.setGeometry(self.left, self.top, self.width, self.height)
self.toolbar = QToolBar("Toolbar")
self.layout = QGridLayout()
self.setCentralWidget(QWidget(self))
self.centralWidget().setLayout(self.layout)
self.move(200, 0)
self.addToolBar(self.toolbar)
self.table_widget = MyTableWidget()
self.open = QAction("test", self)
self.open.triggered.connect(self.table_widget.Open)
self.setStatusBar(QStatusBar())
self.menuFichier = self.menuBar().addMenu("&File")
self.menuFichier.addAction(self.open)
self.widget = QWidget()
self.widget.setLayout(self.layout)
self.setCentralWidget(self.widget)
self.setCentralWidget(self.table_widget)
self.show()
class MyTableWidget(QWidget):
def __init__(self, parent=None):
super(QWidget, self).__init__(parent)
self.layout = QGridLayout()
self.i = {}
self.n = 0
self.index = {}
self.tab = {}
self.whichList = {}
self.bookNo = -1
# Initialize tab screen
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.setMovable(True)
# Add tabs to widget
self.layout.addWidget(self.tabs)
self.setLayout(self.layout)
def Open(self):
n = str(self.n)
self.i[n] = 0
self.tab[n] = QWidget()
self.tab[n].objectName()
self.tab[n].layout = QGridLayout()
self.bookNo = self.bookNo + 1
self.image_list = []
for i in range(1,randint(3,50)):
self.image_list.append(str(i))
self.whichList[self.bookNo] = self.image_list
self.pageNumDisp = QLabel("Page : 0 of "+str(len(self.image_list)-1))
self.tab[n].layout.addWidget(self.pageNumDisp,1, 1)
self.nextpagebutton = QPushButton(">", self)
self.nextpagebutton.setObjectName('>{}'.format(self.n))
self.nextpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.nextpagebutton, 0, 2)
self.nextpagebutton.clicked.connect(self.readnext)
self.prevpagebutton = QPushButton("<", self)
self.prevpagebutton.setObjectName('<{}'.format(self.n))
self.prevpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.prevpagebutton, 0, 0)
self.prevpagebutton.clicked.connect(self.readprev)
self.index[n] = self.tabs.addTab(self.tab[n], "Tab " + str(self.n))
self.tab[n].setLayout(self.tab[n].layout)
self.n = int(self.n) + 1
print(self.i)
def readnext(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] += 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
def readprev(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] -= 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
app = QCoreApplication.instance()
if app is None:
app = QApplication(sys.argv)
window = FenetrePrincipale()
window.show()
问题已解决：
import sys
from PyQt5.QtWidgets import QApplication, QStackedLayout, QMainWindow, QLabel, QGridLayout, QWidget, QPushButton, QAction, QStatusBar, QToolBar, QTabWidget
from PyQt5.QtCore import QCoreApplication
from random import randint
class FenetrePrincipale(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Liseuse de Bandes Dessinées")
self.left = 10
self.top = 10
self.width = 900
self.height = 850
self.i = 0
self.setGeometry(self.left, self.top, self.width, self.height)
self.toolbar = QToolBar("Toolbar")
self.layout = QGridLayout()
self.setCentralWidget(QWidget(self))
self.centralWidget().setLayout(self.layout)
self.move(200, 0)
self.addToolBar(self.toolbar)
self.table_widget = MyTableWidget()
self.open = QAction("test", self)
self.open.triggered.connect(self.table_widget.Open)
self.setStatusBar(QStatusBar())
self.menuFichier = self.menuBar().addMenu("&File")
self.menuFichier.addAction(self.open)
self.widget = QWidget()
self.widget.setLayout(self.layout)
self.setCentralWidget(self.widget)
self.setCentralWidget(self.table_widget)
self.show()
class MyBookWidget(QWidget):
def __init__(self, pages, parent = None):
super().__init__(parent)
grid_layout = QGridLayout(self)
self.nextpagebutton = QPushButton(">", self)
self.nextpagebutton.setFixedSize(50, 720)
grid_layout.addWidget(self.nextpagebutton, 0, 2)
self.nextpagebutton.clicked.connect(self.readnext)
self.prevpagebutton = QPushButton("<", self)
self.prevpagebutton.setFixedSize(50, 720)
grid_layout.addWidget(self.prevpagebutton, 0, 0)
self.prevpagebutton.clicked.connect(self.readprev)
# adding a label for displaying the current page number
self.pageNumDisp = QLabel()
grid_layout.addWidget(self.pageNumDisp, 1, 1)
# Here I use a stacked layout for showing the pages of the book
# navigating between pages can then be done by changing the index of the layout
self.page_viewer = QStackedLayout()
grid_layout.addLayout(self.page_viewer, 0, 1)
for n in pages:
page = QLabel()
page.setText(str(n))
self.page_viewer.addWidget(page)
# connect a slot to the currentChanged signal of the QStackedWidget for updating the label
self.page_viewer.currentChanged.connect(self.page_changed)
self.page_changed(0)
def page_changed(self, page_nr):
self.pageNumDisp.setText("Page : "+str(page_nr+1)+" of "+str(self.page_count()))
def page_count(self):
return self.page_viewer.count()
def current_page(self):
return self.page_viewer.currentIndex()
def readnext(self):
new_page = min(self.current_page()+1, self.page_count()-1)
self.page_viewer.setCurrentIndex(new_page)
def readprev(self):
new_page = max(self.current_page() - 1, 0)
self.page_viewer.setCurrentIndex(new_page)
class MyTableWidget(QWidget):
def __init__(self, parent=None):
super(QWidget, self).__init__(parent)
self.layout = QGridLayout()
# Initialize tab screen
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.setMovable(True)
# Add tabs to widget
self.layout.addWidget(self.tabs, 0, 0)
self.setLayout(self.layout)
def book_count(self):
return self.tabs.count()
def Open(self):
image_list = []
for i in range(1, randint(3, 50)):
image_list.append(str(i))
widget = MyBookWidget(image_list)
self.tabs.addTab(widget, "Book"+str(self.book_count()))
app = QCoreApplication.instance()
if app is None:
app = QApplication(sys.argv)
window = FenetrePrincipale()
window.show()
app.exec_()
我正在制作一个漫画查看器，但我遇到了错误。
所以我制作了一个程序，每次我们点击 "File" 然后 "test" 时都会打开一个新选项卡。 我创建了一个模拟随机书籍长度的列表。
当我们在第一个选项卡上按下左右按钮时，会显示我们所在的页面（例如"page 3 of 23"） 但是，问题是当我们打开新标签时，页码显示存在错误。第一个标签中的页码相互重叠，只有最后打开的标签显示正确。
我知道为什么。当我们打开一个新标签时，我们通过 Open(self) 函数打开一个标签，然后 self.pageNumDisp = QLabel("Page : 0 of "+str(len(self.image_list)-1)) 在最后一个标签的页码显示上打印其文本，然后将其添加到新标签中。
问题是我不知道如何解决这个错误，非常欢迎您的帮助。
实际上我在使用 self.prevpagebutton.setEnabled(True/False) 时遇到了类似的问题，最后我只是在书在第一页和最后一页时没有禁用按钮，而是只是开始阅读所有内容结束了，但实际问题只是让我确认了问题出在哪里。
这是添加新选项卡、创建页码列表并设置第 0 页显示的部分：
def Open(self):
n = str(self.n)
self.i[n] = 0
self.tab[n] = QWidget()
self.tab[n].objectName()
self.tab[n].layout = QGridLayout()
self.bookNo = self.bookNo + 1
self.image_list = []
for i in range(1,randint(3,50)):
self.image_list.append(str(i))
self.whichList[self.bookNo] = self.image_list
self.pageNumDisp = QLabel("Page : 0 of "+str(len(self.image_list)-1))
self.tab[n].layout.addWidget(self.pageNumDisp,1, 1)
self.nextpagebutton = QPushButton(">", self)
self.nextpagebutton.setObjectName('>{}'.format(self.n))
self.nextpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.nextpagebutton, 0, 2)
self.nextpagebutton.clicked.connect(self.readnext)
self.prevpagebutton = QPushButton("<", self)
self.prevpagebutton.setObjectName('<{}'.format(self.n))
self.prevpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.prevpagebutton, 0, 0)
self.prevpagebutton.clicked.connect(self.readprev)
self.index[n] = self.tabs.addTab(self.tab[n], "Tab " + str(self.n))
self.tab[n].setLayout(self.tab[n].layout)
self.n = int(self.n) + 1
print(self.i)
这是根据我们是按下右按钮还是左按钮来更改显示的页码的部分：
def readnext(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] += 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
def readprev(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] -= 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
这里有我的完整程序，你可以试试，它有效:
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QGridLayout, QWidget, QPushButton, QAction, QStatusBar, QToolBar, QTabWidget
from PyQt5.QtCore import QCoreApplication
from random import randint
class FenetrePrincipale(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Liseuse de Bandes Dessinées")
self.left = 10
self.top = 10
self.width = 900
self.height = 850
self.i = 0
self.setGeometry(self.left, self.top, self.width, self.height)
self.toolbar = QToolBar("Toolbar")
self.layout = QGridLayout()
self.setCentralWidget(QWidget(self))
self.centralWidget().setLayout(self.layout)
self.move(200, 0)
self.addToolBar(self.toolbar)
self.table_widget = MyTableWidget()
self.open = QAction("test", self)
self.open.triggered.connect(self.table_widget.Open)
self.setStatusBar(QStatusBar())
self.menuFichier = self.menuBar().addMenu("&File")
self.menuFichier.addAction(self.open)
self.widget = QWidget()
self.widget.setLayout(self.layout)
self.setCentralWidget(self.widget)
self.setCentralWidget(self.table_widget)
self.show()
class MyTableWidget(QWidget):
def __init__(self, parent=None):
super(QWidget, self).__init__(parent)
self.layout = QGridLayout()
self.i = {}
self.n = 0
self.index = {}
self.tab = {}
self.whichList = {}
self.bookNo = -1
# Initialize tab screen
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.setMovable(True)
# Add tabs to widget
self.layout.addWidget(self.tabs)
self.setLayout(self.layout)
def Open(self):
n = str(self.n)
self.i[n] = 0
self.tab[n] = QWidget()
self.tab[n].objectName()
self.tab[n].layout = QGridLayout()
self.bookNo = self.bookNo + 1
self.image_list = []
for i in range(1,randint(3,50)):
self.image_list.append(str(i))
self.whichList[self.bookNo] = self.image_list
self.pageNumDisp = QLabel("Page : 0 of "+str(len(self.image_list)-1))
self.tab[n].layout.addWidget(self.pageNumDisp,1, 1)
self.nextpagebutton = QPushButton(">", self)
self.nextpagebutton.setObjectName('>{}'.format(self.n))
self.nextpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.nextpagebutton, 0, 2)
self.nextpagebutton.clicked.connect(self.readnext)
self.prevpagebutton = QPushButton("<", self)
self.prevpagebutton.setObjectName('<{}'.format(self.n))
self.prevpagebutton.setFixedSize(50, 780)
self.tab[n].layout.addWidget(self.prevpagebutton, 0, 0)
self.prevpagebutton.clicked.connect(self.readprev)
self.index[n] = self.tabs.addTab(self.tab[n], "Tab " + str(self.n))
self.tab[n].setLayout(self.tab[n].layout)
self.n = int(self.n) + 1
print(self.i)
def readnext(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] += 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
def readprev(self):
name = str(self.sender().objectName())
identifier = name[-1]
self.i[identifier] -= 1
whichComic = str(self.tabs.currentIndex())
if self.i[identifier] == -1:
self.i[identifier] = len(self.whichList.get(int(whichComic)))-1
if self.i[identifier] == len(self.whichList.get(int(whichComic))):
self.i[identifier] = 0
self.pageNumDisp.setText("")
self.pageNumDisp.setText("Page : "+str(self.i[identifier])+" of "+str(len(self.whichList.get(int(whichComic)))-1))
self.tab[identifier].layout.addWidget(self.pageNumDisp, 1, 1)
print(self.i)
app = QCoreApplication.instance()
if app is None:
app = QApplication(sys.argv)
window = FenetrePrincipale()
window.show()
问题已解决：
import sys
from PyQt5.QtWidgets import QApplication, QStackedLayout, QMainWindow, QLabel, QGridLayout, QWidget, QPushButton, QAction, QStatusBar, QToolBar, QTabWidget
from PyQt5.QtCore import QCoreApplication
from random import randint
class FenetrePrincipale(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Liseuse de Bandes Dessinées")
self.left = 10
self.top = 10
self.width = 900
self.height = 850
self.i = 0
self.setGeometry(self.left, self.top, self.width, self.height)
self.toolbar = QToolBar("Toolbar")
self.layout = QGridLayout()
self.setCentralWidget(QWidget(self))
self.centralWidget().setLayout(self.layout)
self.move(200, 0)
self.addToolBar(self.toolbar)
self.table_widget = MyTableWidget()
self.open = QAction("test", self)
self.open.triggered.connect(self.table_widget.Open)
self.setStatusBar(QStatusBar())
self.menuFichier = self.menuBar().addMenu("&File")
self.menuFichier.addAction(self.open)
self.widget = QWidget()
self.widget.setLayout(self.layout)
self.setCentralWidget(self.widget)
self.setCentralWidget(self.table_widget)
self.show()
class MyBookWidget(QWidget):
def __init__(self, pages, parent = None):
super().__init__(parent)
grid_layout = QGridLayout(self)
self.nextpagebutton = QPushButton(">", self)
self.nextpagebutton.setFixedSize(50, 720)
grid_layout.addWidget(self.nextpagebutton, 0, 2)
self.nextpagebutton.clicked.connect(self.readnext)
self.prevpagebutton = QPushButton("<", self)
self.prevpagebutton.setFixedSize(50, 720)
grid_layout.addWidget(self.prevpagebutton, 0, 0)
self.prevpagebutton.clicked.connect(self.readprev)
# adding a label for displaying the current page number
self.pageNumDisp = QLabel()
grid_layout.addWidget(self.pageNumDisp, 1, 1)
# Here I use a stacked layout for showing the pages of the book
# navigating between pages can then be done by changing the index of the layout
self.page_viewer = QStackedLayout()
grid_layout.addLayout(self.page_viewer, 0, 1)
for n in pages:
page = QLabel()
page.setText(str(n))
self.page_viewer.addWidget(page)
# connect a slot to the currentChanged signal of the QStackedWidget for updating the label
self.page_viewer.currentChanged.connect(self.page_changed)
self.page_changed(0)
def page_changed(self, page_nr):
self.pageNumDisp.setText("Page : "+str(page_nr+1)+" of "+str(self.page_count()))
def page_count(self):
return self.page_viewer.count()
def current_page(self):
return self.page_viewer.currentIndex()
def readnext(self):
new_page = min(self.current_page()+1, self.page_count()-1)
self.page_viewer.setCurrentIndex(new_page)
def readprev(self):
new_page = max(self.current_page() - 1, 0)
self.page_viewer.setCurrentIndex(new_page)
class MyTableWidget(QWidget):
def __init__(self, parent=None):
super(QWidget, self).__init__(parent)
self.layout = QGridLayout()
# Initialize tab screen
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.setMovable(True)
# Add tabs to widget
self.layout.addWidget(self.tabs, 0, 0)
self.setLayout(self.layout)
def book_count(self):
return self.tabs.count()
def Open(self):
image_list = []
for i in range(1, randint(3, 50)):
image_list.append(str(i))
widget = MyBookWidget(image_list)
self.tabs.addTab(widget, "Book"+str(self.book_count()))
app = QCoreApplication.instance()
if app is None:
app = QApplication(sys.argv)
window = FenetrePrincipale()
window.show()
app.exec_()