python - QTabWidget 插入一个 QSplitter 不能在拆分器禁用时切换

Question

我在 QSplitter 中插入了 QFrame 和 QTabWidget。我想禁止在 QSplitter 中调整元素的大小。所以我在QSplitter中调用'setDisabled'的方法。它对于禁用调整元素大小很有用。但我也无法切换 QTabWidget 的选项卡。谁能给我一些建议？非常感谢......

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QSplitter, QHBoxLayout, QFrame, QTabWidget
from PyQt5.QtCore import Qt
class Example1(QWidget):
    def __init__(self):
        super().__init__()
        self.setGeometry(0, 0, 600, 600)
        self.setWindowTitle("Demo")
        self.layout = QHBoxLayout()

        top_frame = QFrame()
        top_frame.setFrameShape(QFrame.StyledPanel)

        bottom_frame = QTabWidget(self)
        tab1 = QWidget()
        tab2 = QWidget()
        bottom_frame.setTabText(0, "Generic")
        bottom_frame.setTabText(1, "Other")
        bottom_frame.addTab(tab1, "Tab 1")
        bottom_frame.addTab(tab2, "Tab 2")

        splitter = QSplitter()
        splitter.setOrientation(Qt.Vertical)
        splitter.addWidget(top_frame)
        splitter.addWidget(bottom_frame)
        splitter.setSizes([300, 300])
        **splitter.setDisabled(True)**

        self.layout.addWidget(splitter)
        self.setLayout(self.layout)
        self.show()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example1()
    sys.exit(app.exec_())

程序的运行结果

标签： pythonpyqtpyqt5qtabwidgetqsplitter

Answer 1

当你禁用一个小部件时，你也禁用了它的孩子，所以禁用 QSplitter 也会禁用 QTabWidget。

一个可能的解决方案是启用或禁用句柄：

import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import (
    QApplication,
    QFrame,
    QHBoxLayout,
    QSplitter,
    QSplitterHandle,
    QTabWidget,
    QWidget,
)


class CustomSplitter(QSplitter):
    @property
    def enabled(self):
        if not hasattr(self, "_enabled"):
            self._enabled = True
        return self._enabled

    @enabled.setter
    def enabled(self, d):
        self._enabled = d
        for i in range(self.count()):
            self.handle(i).setEnabled(self.enabled)

    def createHandle(self):
        handle = super().createHandle()
        handle.setEnabled(self.enabled)
        return handle


class Example1(QWidget):
    def __init__(self):
        super().__init__()
        self.setGeometry(0, 0, 600, 600)
        self.setWindowTitle("Demo")
        self.layout = QHBoxLayout()

        top_frame = QFrame()
        top_frame.setFrameShape(QFrame.StyledPanel)

        bottom_frame = QTabWidget(self)
        tab1 = QWidget()
        tab2 = QWidget()
        bottom_frame.setTabText(0, "Generic")
        bottom_frame.setTabText(1, "Other")
        bottom_frame.addTab(tab1, "Tab 1")
        bottom_frame.addTab(tab2, "Tab 2")

        splitter = CustomSplitter()
        splitter.setOrientation(Qt.Vertical)
        splitter.addWidget(top_frame)
        splitter.addWidget(bottom_frame)
        splitter.setSizes([300, 300])

        splitter.enabled = False

        self.layout.addWidget(splitter)
        self.setLayout(self.layout)
        self.show()


if __name__ == "__main__":
    app = QApplication(sys.argv)
    ex = Example1()
    sys.exit(app.exec_())