問題描述

在我的應(yīng)用程序中，我有一個 QTreeview.我有一個名為test"的文件夾，其中包含許多子文件夾.樹形視圖只顯示子文件夾而不是它自己的測試文件夾！

In my application I have a QTreeview. I have a folder named "test" that contains many subfolders. The treeview only shows the subfolders not the test forlder it self!

def create_treeview(self):
    self.treeView = QTreeView()
    self.treeView.setMinimumSize(QSize(250, 0))
    self.treeView.setMaximumSize(QSize(250, 16777215))
    self.treeView.setObjectName("treeView")

    self.dirModel = QFileSystemModel()
    self.dirModel.setRootPath(QDir.rootPath())
    self.dirModel.setFilter(QDir.NoDotAndDotDot | QDir.AllDirs)

    self.treeView.setModel(self.dirModel)
    self.treeView.setRootIndex(self.dirModel.index("/home/data/test"))
    self.treeView.setHeaderHidden(True)
    self.treeView.clicked.connect(self.tree_click)
    return self.treeView

推薦答案

QTreeView 的rootIndex 被隱藏所以不顯示.一種可能的解決方案是傳遞路徑的父級并使用 QSortFilterProxyModel 隱藏其他目錄和文件.

The rootIndex of the QTreeView is hidden so it is not shown. One possible solution is to pass the parent of the path and use a QSortFilterProxyModel to hide the other directories and files.

import os

from PyQt5.QtCore import pyqtSlot, QDir, QModelIndex, QSize, QSortFilterProxyModel
from PyQt5.QtWidgets import QApplication, QFileSystemModel, QMainWindow, QTreeView


class ProxyModel(QSortFilterProxyModel):
    def __init__(self, parent=None):
        super().__init__(parent)
        self._root_path = ""

    def filterAcceptsRow(self, source_row, source_parent):
        source_model = self.sourceModel()
        if self._root_path and isinstance(source_model, QFileSystemModel):
            root_index = source_model.index(self._root_path).parent()
            if root_index == source_parent:
                index = source_model.index(source_row, 0, source_parent)
                return index.data(QFileSystemModel.FilePathRole) == self._root_path
        return True

    @property
    def root_path(self):
        return self._root_path

    @root_path.setter
    def root_path(self, p):
        self._root_path = p
        self.invalidateFilter()


class MainWindow(QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.create_treeview()
        self.setCentralWidget(self.treeView)

    def create_treeview(self):

        path = "/home/data/test"

        self.treeView = QTreeView()
        self.treeView.setMinimumSize(QSize(250, 0))
        self.treeView.setMaximumSize(QSize(250, 16777215))
        self.treeView.setObjectName("treeView")

        self.dirModel = QFileSystemModel()
        self.dirModel.setRootPath(QDir.rootPath())
        self.dirModel.setFilter(QDir.NoDotAndDotDot | QDir.AllDirs)

        root_index = self.dirModel.index(path).parent()

        self.proxy = ProxyModel(self.dirModel)
        self.proxy.setSourceModel(self.dirModel)
        self.proxy.root_path = path

        self.treeView.setModel(self.proxy)

        proxy_root_index = self.proxy.mapFromSource(root_index)
        self.treeView.setRootIndex(proxy_root_index)

        self.treeView.setHeaderHidden(True)
        self.treeView.clicked.connect(self.tree_click)

    @pyqtSlot(QModelIndex)
    def tree_click(self, index):
        ix = self.proxy.mapToSource(index)
        print(
            ix.data(QFileSystemModel.FilePathRole),
            ix.data(QFileSystemModel.FileNameRole),
        )


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

這篇關(guān)于如何在樹視圖中顯示父目錄?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！