python - 中心调整大小的Qwizard页面

我有2页的Qwizard。

向导打开后，它位于屏幕中间。

第一页小于第二页。

单击“下一步”并显示第二页时，它将多余的项目添加到第一页的底部，但不会重新居中页面。

在较小的屏幕上，这意味着按钮在底部不在屏幕上，除非用户向上移动窗口，否则看不到按钮。

我尝试使用标准QT小部件居中，但是Qwizard似乎对此没有响应。

如何重新居中向导第二页的中心，以便显示整个窗口小部件？

import sys

from PyQt5.QtCore import Qt, QPoint, QIODevice, QDateTime, QSize, QObject, QProcess, pyqtSignal, QThread, QEvent, QTimer, QBasicTimer
from PyQt5.QtWidgets import  QStyle, QWidget, QMainWindow, QCompleter, QProgressBar, QFileDialog, QApplication, qApp, QLineEdit, QLabel, QComboBox, QWizard, QWizardPage, QPushButton, QVBoxLayout, QShortcut, QMessageBox, QDesktopWidget, QHBoxLayout
from PyQt5.QtGui import QPainter, QFont, QIcon, QPixmap, QPalette, QLinearGradient, QColor, QBrush, QCursor


class Wizard(QWizard):
    # Initilisation of the UI and Wizard
    def __init__(self, parent=None):
        super(Wizard, self).__init__(parent)


        self.addPage(EnterToken(self))
        self.addPage(EnterCode(self))

class EnterToken(QWizardPage):
    def __init__(self, parent=None):
        super(EnterToken, self).__init__(parent)

        # Spacer blank label
        self.spacer = QLabel()

        # Enter Token Widgets
        self.label1 = QLabel()
        self.enter_token_box = QLineEdit()

        # empty text box for button
        self.empty = QLineEdit()

        self.btn = QPushButton('Enter Token')

        # layout options
        layout = QVBoxLayout()

        layout.addWidget(self.spacer)

        layout.addWidget(self.label1)
        layout.addWidget(self.enter_token_box)
        layout.addWidget(self.btn)

        self.setLayout(layout)


    def _EnterToken(self):
        """ Method for processing user input after the button is pressed"""
        text = self.enter_token_box.text()


class EnterCode(QWizardPage):
    """ Sensor Code Entry """

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

        # Spacer Label
        self.spacer = QLabel()

        self._five_digit = QLineEdit(self)
        self.code_combo = QComboBox(self)
        self.label1 = QLabel()

        self.lineedit1 = QLineEdit(self)
        self.lineedit2 =QLineEdit(self)
        self.lineedit3 = QLineEdit(self)
        self.lineedit4 = QLineEdit(self)
        self.lineedit5 = QLineEdit(self)
        self.lineedit6 = QLineEdit(self)
        self.lineedit7 = QLineEdit(self)
        self.lineedit8 = QLineEdit(self)
        self.lineedit9 = QLineEdit(self)
        self.lineedit10 = QLineEdit(self)


        self.code_combo_list = [
            'Years', 'Months', 'Weeks', 'Days', 'Hours', 'Years', 'Months', 'Weeks', 'Days', 'Hours']
        for x in self.code_combo_list:
            self.code_combo.addItem(x)

        # num of logs combo box
        self.enter_num_logs = QLineEdit(self)
        self.num_logs_combo = QComboBox(self)
        self.logs_label = QLabel()


        self.num_logs_combo_list = [
            'Years', 'Months', 'Weeks', 'Days', 'Hours', 'Years', 'Months', 'Weeks', 'Days', 'Hours']
        for x in self.num_logs_combo_list:
            self.num_logs_combo.addItem(x)

        # ~buttons
        self.btn = QPushButton('Download Data')

        layout = QVBoxLayout()

        layout.addWidget(self.spacer)
        layout.addWidget(self.label1)
        layout.addWidget(self.code_combo)
        layout.addWidget(self._five_digit)

        layout.addWidget(self.lineedit1)
        layout.addWidget(self.lineedit2)
        layout.addWidget(self.lineedit3)
        layout.addWidget(self.lineedit4)
        layout.addWidget(self.lineedit5)
        layout.addWidget(self.lineedit6)
        layout.addWidget(self.lineedit7)
        layout.addWidget(self.lineedit8)
        layout.addWidget(self.lineedit9)
        layout.addWidget(self.lineedit10)


        layout.addWidget(self.logs_label)
        layout.addWidget(self.num_logs_combo)
        layout.addWidget(self.enter_num_logs)

        layout.addWidget(self.btn)

        self.setLayout(layout)



if __name__ == '__main__':

最佳答案

如果要使窗口居中，则必须在可见时执行此操作，在这种情况下，必须使用currentIdChanged信号，但是当调用插槽时，即使新窗口也不可见，因此我们将使用QTimer稍后再更新。

class Wizard(QWizard):
    def __init__(self, parent=None):
        super(Wizard, self).__init__(parent)
        self.addPage(EnterToken(self))
        self.addPage(EnterCode(self))
        self.currentIdChanged.connect(self.onCurrentIdChanged)

    def onCurrentIdChanged(self):
        QTimer.singleShot(0, self.center_widget)

    def center_widget(self):
        self.window().setGeometry(
            QStyle.alignedRect(
                Qt.LeftToRight,
                Qt.AlignCenter,
                self.window().size(),
                QApplication.desktop().availableGeometry())
        )

关于python - 中心调整大小的Qwizard页面，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51768933/