python - 使用 QTreeView 的行中的文本对齐错误

Question

我有一个 QTreeView(使用 PyQt4)，使用下面的代码自定义和调整大小的图标，但是 Size 列显示错误对齐/位置，像这样:

        self.ui.treeView.setIconSize(QtCore.QSize(30,30))

        fileSystemModel = QtGui.QFileSystemModel(self.ui.treeView)
        custonIconProvider = CustomIconsProvider()
        fileSystemModel.setIconProvider(custonIconProvider)

        self.ui.treeView.setModel(fileSystemModel)
        self.ui.treeView.setRootIndex(fileSystemModel.setRootPath(forlderPath))

        self.ui.treeView.setColumnWidth(0, 250)
        self.ui.treeView.setColumnWidth(1, 70)
        self.ui.treeView.setColumnWidth(2, 70)

我搜索了 http://pyqt.sourceforge.net/Docs/PyQt4/qtreeview.html可能修复的文档，但找不到任何明显的东西。

Answer 1

解决此问题的一种方法是重新实现模型的 data() method以便 TextAlignmentRole 的值始终包含 AlignVCenter 标志:

# python3 or sip.setapi('QVariant', 2)

class FileSystemModel(QtGui.QFileSystemModel):
    def data(self, index, role):
        value = super(FileSystemModel, self).data(index, role)
        if role == QtCore.Qt.TextAlignmentRole and value is not None:
            value |= QtCore.Qt.AlignVCenter
        return value

# python2 or sip.setapi('QVariant', 1)

class FileSystemModel(QtGui.QFileSystemModel):
    def data(self, index, role):
        value = super(FileSystemModel, self).data(index, role)
        if role == QtCore.Qt.TextAlignmentRole and value.isValid():
            value = value.toInt()[0] | QtCore.Qt.AlignVCenter
        return value