PyQt5如何设置TabWidget西但保持文本水平

PyQt5如何设置TabWidget西但保持文本水平

在这个答案中，我将使用C ++编写的另一个答案进行python转换。

from PyQt5 import QtCore, QtGui, QtWidgetsclass TabBar(QtWidgets.QTabBar):    def tabSizeHint(self, index):        s = QtWidgets.QTabBar.tabSizeHint(self, index)        s.transpose()        return s    def paintEvent(self, event):        painter = QtWidgets.QStylePainter(self)        opt = QtWidgets.QStyleOptionTab()        for i in range(self.count()): self.initStyleOption(opt, i) painter.drawControl(QtWidgets.QStyle.CE_TabBarTabShape, opt) painter.save() s = opt.rect.size() s.transpose() r = QtCore.QRect(QtCore.QPoint(), s) r.moveCenter(opt.rect.center()) opt.rect = r c = self.tabRect(i).center() painter.translate(c) painter.rotate(90) painter.translate(-c) painter.drawControl(QtWidgets.QStyle.CE_TabBarTabLabel, opt); painter.restore()class TabWidget(QtWidgets.QTabWidget):    def __init__(self, *args, **kwargs):        QtWidgets.QTabWidget.__init__(self, *args, **kwargs)        self.setTabBar(TabBar(self))        self.setTabPosition(QtWidgets.QTabWidget.West)if __name__ == '__main__':    import sys    app = QtWidgets.QApplication(sys.argv)    w = TabWidget()    w.addTab(QtWidgets.QWidget(), "tab1")    w.addTab(QtWidgets.QWidget(), "tab2")    w.addTab(QtWidgets.QWidget(), "tab3")    w.show()    sys.exit(app.exec_())