• Tree Widget -- 基本方法


    Tree Widget这个空间类似于一种表格的形式,是一种树状结构

    效果图:

    第一步:打开designer.exe,拖动一个Tree Widget空间到主窗口上

    第二步:双击Tree Widget,添加节点以及子节点

    最后添加完后的图形为

    可以看到目前还没有什么效果,点击"Properties"我们给它换一下字体颜色和背景色。

    首先选中Test1

    下滑右边的属性,找到"backgroud",设置Style为Solid,设置Color为想要的,点击右侧那三个点。可以看到颜色已经改变了,想要改变Value那一列某一行的颜色,选中Test1右侧的waiting,对背景色进行设置。另外,下面的foreground,是对字体颜色进行设置,设置方法差不多。

    那么最后运行出来的效果就是:

    自己手动一项一项添加是不是很麻烦,用代码进行添加或许会容易许多,我们先来看看它UI转换成代码之后的py文件。

    treeview3.py

    # -*- coding: utf-8 -*-
    
    # Form implementation generated from reading ui file 'treeview3.ui'
    #
    # Created by: PyQt5 UI code generator 5.13.0
    #
    # WARNING! All changes made in this file will be lost!
    
    
    from PyQt5 import QtCore, QtGui, QtWidgets
    
    
    class Ui_MainWindow(object):
        def setupUi(self, MainWindow):
            MainWindow.setObjectName("MainWindow")
            MainWindow.resize(800, 600)
            self.centralwidget = QtWidgets.QWidget(MainWindow)
            self.centralwidget.setObjectName("centralwidget")
            self.treeWidget = QtWidgets.QTreeWidget(self.centralwidget)
            self.treeWidget.setGeometry(QtCore.QRect(200, 120, 256, 192))
            self.treeWidget.setObjectName("treeWidget")
            font = QtGui.QFont()
            font.setPointSize(14)
            self.treeWidget.headerItem().setFont(0, font)
            font = QtGui.QFont()
            font.setPointSize(14)
            self.treeWidget.headerItem().setFont(1, font)
            item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
            brush = QtGui.QBrush(QtGui.QColor(170, 0, 255))
            brush.setStyle(QtCore.Qt.SolidPattern)
            item_0.setBackground(0, brush)
            brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
            brush.setStyle(QtCore.Qt.SolidPattern)
            item_0.setBackground(1, brush)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            item_1 = QtWidgets.QTreeWidgetItem(item_0)
            MainWindow.setCentralWidget(self.centralwidget)
            self.menubar = QtWidgets.QMenuBar(MainWindow)
            self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
            self.menubar.setObjectName("menubar")
            MainWindow.setMenuBar(self.menubar)
            self.statusbar = QtWidgets.QStatusBar(MainWindow)
            self.statusbar.setObjectName("statusbar")
            MainWindow.setStatusBar(self.statusbar)
    
            self.retranslateUi(MainWindow)
            QtCore.QMetaObject.connectSlotsByName(MainWindow)
    
        def retranslateUi(self, MainWindow):
            _translate = QtCore.QCoreApplication.translate
            MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
            self.treeWidget.headerItem().setText(0, _translate("MainWindow", "Key"))
            self.treeWidget.headerItem().setText(1, _translate("MainWindow", "Value"))
            __sortingEnabled = self.treeWidget.isSortingEnabled()
            self.treeWidget.setSortingEnabled(False)
            self.treeWidget.topLevelItem(0).setText(0, _translate("MainWindow", "Test1"))
            self.treeWidget.topLevelItem(0).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(0).child(0).setText(0, _translate("MainWindow", "a"))
            self.treeWidget.topLevelItem(0).child(0).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(0).child(1).setText(0, _translate("MainWindow", "b"))
            self.treeWidget.topLevelItem(0).child(1).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(0).child(2).setText(0, _translate("MainWindow", "c"))
            self.treeWidget.topLevelItem(0).child(2).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(0).child(3).setText(0, _translate("MainWindow", "d"))
            self.treeWidget.topLevelItem(0).child(3).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(1).setText(0, _translate("MainWindow", "Test2"))
            self.treeWidget.topLevelItem(1).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(1).child(0).setText(0, _translate("MainWindow", "a"))
            self.treeWidget.topLevelItem(1).child(0).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(1).child(1).setText(0, _translate("MainWindow", "b"))
            self.treeWidget.topLevelItem(1).child(1).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(1).child(2).setText(0, _translate("MainWindow", "c"))
            self.treeWidget.topLevelItem(1).child(2).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(1).child(3).setText(0, _translate("MainWindow", "d"))
            self.treeWidget.topLevelItem(1).child(3).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.topLevelItem(1).child(4).setText(0, _translate("MainWindow", "e"))
            self.treeWidget.topLevelItem(1).child(4).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.setSortingEnabled(__sortingEnabled)
    View Code

    动态添加数据

    很多,不详看,那么我们只需要注意其中几条语句就可以。

    第一个,设置颜色的语句块

    1 item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
    2 brush = QtGui.QBrush(QtGui.QColor(170, 0, 255))
    3 brush.setStyle(QtCore.Qt.SolidPattern)
    4 item_0.setBackground(0, brush)

    其中item_0就是根节点

    第二个,创建子节点的语句

    item_1 = QtWidgets.QTreeWidgetItem(item_0)

    第三个,设置每个节点的文本

    1         self.treeWidget.topLevelItem(0).setText(0, _translate("MainWindow", "Test1"))
    2         self.treeWidget.topLevelItem(0).setText(1, _translate("MainWindow", "waiting"))

    topLevelItem(0)里面的0代表第一个根节点,setText(0, ....)里面的0代表第一列,1代表第二列。

    1         self.treeWidget.topLevelItem(0).child(0).setText(0, _translate("MainWindow", "a"))
    2         self.treeWidget.topLevelItem(0).child(0).setText(1, _translate("MainWindow", "waiting"))

    child(0)里面的0代表第一个子节点

    用界面添加的属于静态添加数据,并且一条一条的插入,修改样式很浪费时间,而且代码看起来也会比较多,如果动态插入的话会快许多。所以,想了一个办法,将要填入树结构的数据存放在一个类里面,类名为DataCollection。

    treeview_data.py

    class DataCollection:
        def __init__(self):
            self.module = {}
            self.items = []
    
        def set_module(self, module_dic):
            self.module = module_dic
    
        def add_item(self, item_dic):
            self.items.append(item_dic)
    
        def set_item(self, item_dic, item_name):
            for item_num, item in enumerate(self.items):
                for name, result in item.items():
                    if name == item_name:
                        self.items[item_num][name] = item_dic[name]
                        break
            all_pass = True
            for item1 in self.items:
                for result1 in item1.values():
                    if result1 != "p":
                        all_pass = False
                        break
            if all_pass:
                for module_name, module_result in self.module.items():
                    self.module[module_name] = "p"
    
    
    if __name__ == "__main__":
        module_1 = DataCollection()
        module_1.set_module({"Test1": "t"})
        module_1.add_item({"a": "t"})
        module_1.add_item({"b": "t"})
        module_1.add_item({"c": "t"})
        module_1.add_item({"d": "t"})
        module_1.set_item({"a": "p"}, "a")
        module_1.set_item({"b": "p"}, "b")
        module_1.set_item({"c": "p"}, "c")
        module_1.set_item({"d": "p"}, "d")
    View Code

    然后修改刚才生成的treeview3.py

    # -*- coding: utf-8 -*-
    
    # Form implementation generated from reading ui file 'treeview3.ui'
    #
    # Created by: PyQt5 UI code generator 5.13.0
    #
    # WARNING! All changes made in this file will be lost!
    
    
    from PyQt5 import QtCore, QtGui, QtWidgets
    import treeview_data
    
    
    class Ui_MainWindow(object):
        def setupUi(self, MainWindow):
            MainWindow.setObjectName("MainWindow")
            MainWindow.resize(800, 600)
            self.centralwidget = QtWidgets.QWidget(MainWindow)
            self.centralwidget.setObjectName("centralwidget")
            self.treeWidget = QtWidgets.QTreeWidget(self.centralwidget)
            self.treeWidget.setGeometry(QtCore.QRect(200, 120, 256, 192))
            self.treeWidget.setObjectName("treeWidget")
            font = QtGui.QFont()
            font.setPointSize(14)
            self.treeWidget.headerItem().setFont(0, font)
            font = QtGui.QFont()
            font.setPointSize(14)
            self.treeWidget.headerItem().setFont(1, font)
            # item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
            # brush = QtGui.QBrush(QtGui.QColor(170, 0, 255))
            # brush.setStyle(QtCore.Qt.SolidPattern)
            # item_0.setBackground(0, brush)
            # brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
            # brush.setStyle(QtCore.Qt.SolidPattern)
            # item_0.setBackground(1, brush)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            # item_1 = QtWidgets.QTreeWidgetItem(item_0)
            MainWindow.setCentralWidget(self.centralwidget)
            self.menubar = QtWidgets.QMenuBar(MainWindow)
            self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
            self.menubar.setObjectName("menubar")
            MainWindow.setMenuBar(self.menubar)
            self.statusbar = QtWidgets.QStatusBar(MainWindow)
            self.statusbar.setObjectName("statusbar")
            MainWindow.setStatusBar(self.statusbar)
    
            self.retranslateUi(MainWindow)
            QtCore.QMetaObject.connectSlotsByName(MainWindow)
    
        def retranslateUi(self, MainWindow):
            _translate = QtCore.QCoreApplication.translate
            MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
            self.treeWidget.headerItem().setText(0, _translate("MainWindow", "Key"))
            self.treeWidget.headerItem().setText(1, _translate("MainWindow", "Value"))
            __sortingEnabled = self.treeWidget.isSortingEnabled()
            self.treeWidget.setSortingEnabled(False)
            self.insert_data_to_tree_view(_translate)
            # self.treeWidget.topLevelItem(0).setText(0, _translate("MainWindow", "Test1"))
            # self.treeWidget.topLevelItem(0).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(0).child(0).setText(0, _translate("MainWindow", "a"))
            # self.treeWidget.topLevelItem(0).child(0).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(0).child(1).setText(0, _translate("MainWindow", "b"))
            # self.treeWidget.topLevelItem(0).child(1).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(0).child(2).setText(0, _translate("MainWindow", "c"))
            # self.treeWidget.topLevelItem(0).child(2).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(0).child(3).setText(0, _translate("MainWindow", "d"))
            # self.treeWidget.topLevelItem(0).child(3).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(1).setText(0, _translate("MainWindow", "Test2"))
            # self.treeWidget.topLevelItem(1).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(1).child(0).setText(0, _translate("MainWindow", "a"))
            # self.treeWidget.topLevelItem(1).child(0).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(1).child(1).setText(0, _translate("MainWindow", "b"))
            # self.treeWidget.topLevelItem(1).child(1).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(1).child(2).setText(0, _translate("MainWindow", "c"))
            # self.treeWidget.topLevelItem(1).child(2).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(1).child(3).setText(0, _translate("MainWindow", "d"))
            # self.treeWidget.topLevelItem(1).child(3).setText(1, _translate("MainWindow", "waiting"))
            # self.treeWidget.topLevelItem(1).child(4).setText(0, _translate("MainWindow", "e"))
            # self.treeWidget.topLevelItem(1).child(4).setText(1, _translate("MainWindow", "waiting"))
            self.treeWidget.setSortingEnabled(__sortingEnabled)
    
        def insert_data_to_tree_view(self, _translate):
            list_objects = []
            test1 = treeview_data.DataCollection()
            test1.set_module({"Test1": "waiting"})
            test1.add_item({"a1": "waiting"})
            test1.add_item({"b1": "waiting"})
            test1.add_item({"c1": "waiting"})
            list_objects.append(test1)
    
            test2 = treeview_data.DataCollection()
            test2.set_module({"Test2": "waiting"})
            test2.add_item({"a2": "waiting"})
            test2.add_item({"b2": "waiting"})
            test2.add_item({"c2": "waiting"})
            test2.add_item({"d2": "waiting"})
            list_objects.append(test2)
    
            test3 = treeview_data.DataCollection()
            test3.set_module({"Test3": "waiting"})
            test3.add_item({"a2": "waiting"})
            test3.add_item({"b2": "waiting"})
            test3.add_item({"c2": "waiting"})
            test3.add_item({"d2": "waiting"})
            list_objects.append(test3)
    
            for object_num, object_module in enumerate(list_objects):
                item_0 = QtWidgets.QTreeWidgetItem(self.treeWidget)
                brush = QtGui.QBrush(QtGui.QColor(176, 165, 172))
                brush.setStyle(QtCore.Qt.SolidPattern)
                item_0.setBackground(0, brush)
                for module_name, module_result in object_module.module.items():
                    brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
                    brush.setStyle(QtCore.Qt.SolidPattern)
                    item_0.setBackground(1, brush)
                    self.treeWidget.topLevelItem(object_num).setText(0, _translate("MainWindow", module_name))
                    self.treeWidget.topLevelItem(object_num).setText(1, _translate("MainWindow", module_result))
                for item_num, item_dic in enumerate(object_module.items):
                    for item_name, item_result in item_dic.items():
                        item_1 = QtWidgets.QTreeWidgetItem(item_0)
                        self.treeWidget.topLevelItem(object_num).child(item_num).setText(0, _translate("MainWindow", item_name))
                        self.treeWidget.topLevelItem(object_num).child(item_num).setText(1, _translate("MainWindow", item_result))
    View Code

     如果想要使每次运行时,tree都是打开的状态,就在

    self.insert_data_to_tree_view(_translate)

    后面加一句

    self.treeWidget.expandAll()

    就行了。

    最后的效果就是文章最开头的那样,在循环填写数据的时候,样式就已经设置了,很方便。可以看出,某些情况下画图比较方便,某些情况下代码比较快,具体看自己的需求是怎样的。

    另外,如果大家还有什么好的存储数据的方法,欢迎分享交流。

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  • 原文地址:https://www.cnblogs.com/smart-zihan/p/12158060.html
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