如何在QStandardItemModel中居中图标？

Question

def data(self, index, role): 
    if role == Qt.DecorationRole: 
     if index.column() == 0: 
      return QApplication.style().standardIcon(QStyle.SP_DialogYesButton if self.item(index.row()).valid else QStyle.SP_DialogNoButton) 
    elif role == Qt.TextAlignmentRole: 
     if index.column() == 0: 
      return QVariant(Qt.AlignCenter | Qt.AlignVCenter) 

图标显示正常，但不居中。

Answer 1

我找到了QStyledItemDelegate的解决方案。

def paint(self, painter, option, index): 
     QStyledItemDelegate.paint(self, painter, option, index) 
     QApplication.style().standardIcon(QStyle.SP_DialogYesButton if index.data().valid else QStyle.SP_DialogNoButton).paint(painter, option.rect)