PyQt5 高级界面控制（表格、树、tab、dock、scrollbar、多文档界面）

# _*_ coding: utf-8 _*_
# @Time : 2022/5/9 9:44
# @Author : Michael
# @File : tableview1.py
# @desc :
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtWidgets import QWidget, QTableView, QVBoxLayout, QApplication, QHeaderView


class table_view(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("table_view")
        self.resize(500, 300)
        self.model = QStandardItemModel()
        self.model.setHorizontalHeaderLabels(["姓名", "年龄", "性别", "地址"])

        for r in range(4):
            for c in range(4):
                item = QStandardItem("row %s, col %s" % (r, c))
                self.model.setItem(r, c, item)
        # 添加数据
        self.model.appendRow([
            QStandardItem("张三"), QStandardItem("20"),
        ])
        self.model.appendRow([
            QStandardItem('李四'), QStandardItem("21"),
        ])

        self.tableview1 = QTableView()
        self.tableview1.setModel(self.model)
        self.tableview1.horizontalHeader().setStretchLastSection(True)
        self.tableview1.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)  # 表格填满窗口

        # 删除数据
        indexs = self.tableview1.selectionModel().selection().indexes()
        print(indexs)
        if len(indexs) > 0:
            index = indexs[0]
            self.model.removeRows(index.row(), 2)  # 删除两行
        index = self.tableview1.currentIndex()
        print(index, index.row(), index.column())
        self.model.removeRow(index.row()+1)

        layout = QVBoxLayout()
        layout.addWidget(self.tableview1)
        self.setLayout(layout)


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    win = table_view()
    win.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/9 21:08
# @Author : Michael
# @File : list_view1.py
# @desc :
from PyQt5.QtCore import QStringListModel
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QListView, QMessageBox, QApplication


class listViewDemo(QWidget):
    def __init__(self):
        super(listViewDemo, self).__init__()
        self.setWindowTitle("ListView例子")
        self.resize(300, 300)

        layout = QVBoxLayout()

        listview = QListView()

        str_list_model = QStringListModel()
        self.qList = ['Item 1', 'Item 2', 'Item 3', 'Item 4']
        str_list_model.setStringList(self.qList)

        listview.setModel(str_list_model)
        listview.clicked.connect(self.clicked)

        layout.addWidget(listview)
        self.setLayout(layout)
    def clicked(self, qModelIndex):
        QMessageBox.information(self, "title", "text:你选择了 " + self.qList[qModelIndex.row()])

if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    main = listViewDemo()
    main.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/9 21:20
# @Author : Michael
# @File : listWidgetDemo.py
# @desc :
from PyQt5.QtWidgets import QListWidget, QMessageBox, QApplication


class ListWidgetDemo(QListWidget):
    def clicked(self, item):
        QMessageBox.information(self, "ListWidget", "You clicked: " + item.text())


if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    listwidget = ListWidgetDemo()
    listwidget.resize(300, 200)
    listwidget.addItem("item 1")
    listwidget.addItem("item 2")
    listwidget.addItem("item 3")
    listwidget.addItem("item 4")
    listwidget.setWindowTitle("ListWidget Demo")
    listwidget.itemClicked.connect(listwidget.clicked)
    listwidget.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/9 21:39
# @Author : Michael
# @File : tablewidgetDemo.py
# @desc :
from PyQt5.QtWidgets import QWidget, QHBoxLayout, QTableWidget, QTableWidgetItem, QApplication


class TableWidgetDemo(QWidget):
    def __init__(self):
        super(TableWidgetDemo, self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle("TableWidget例子")
        self.resize(500, 300)

        layout = QHBoxLayout()

        tablewidget = QTableWidget(4, 3)  # 行，列
        # tablewidget.setRowCount(4)
        # tablewidget.setColumnCount(3)

        layout.addWidget(tablewidget)

        tablewidget.setHorizontalHeaderLabels(["姓名", "性别", "体重(kg)"])
        tablewidget.setVerticalHeaderLabels(["1行", "2行", "3行", "4行哦"])
        tablewidget.setItem(0, 0, QTableWidgetItem("张三"))
        tablewidget.setItem(0, 1, QTableWidgetItem("男"))
        tablewidget.setItem(0, 2, QTableWidgetItem("150"))

        self.setLayout(layout)


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    main = TableWidgetDemo()
    main.show()
    sys.exit(app.exec_())

tablewidget.resizeColumnsToContents()
tablewidget.resizeRowsToContents()

tablewidget.horizontalHeader().setVisible(False)
tablewidget.verticalHeader().setVisible(False)

# 添加控件
combox = QComboBox()
combox.addItem("男")
combox.addItem("女")
combox.setStyleSheet("QComboBox{margin:3px width:80px;}")
tablewidget.setCellWidget(1, 1, combox)

btn = QPushButton("保存")
btn.setDown(True)
btn.setStyleSheet("QPushButton{margin:20px width:20px;}")
tablewidget.setCellWidget(1, 2, btn)

# _*_ coding: utf-8 _*_
# @Time : 2022/5/10 9:48
# @Author : Michael
# @File : table_position.py
# @desc :
from PyQt5.QtGui import QBrush, QColor
from PyQt5.QtWidgets import QWidget, QHBoxLayout, QTableWidget, QTableWidgetItem, QApplication
from PyQt5.QtCore import Qt

class table_position(QWidget):
    def __init__(self):
        super(table_position, self).__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle("Table Position")
        self.resize(300, 200)

        layout = QHBoxLayout()

        tablewidget = QTableWidget()
        tablewidget.setRowCount(30)
        tablewidget.setColumnCount(4)

        layout.addWidget(tablewidget)

        for i in range(30):
            for j in range(4):
                itemContent = f'{i},{j}'
                tablewidget.setItem(i, j, QTableWidgetItem(itemContent))
        self.setLayout(layout)

        # 遍历表格查找指定内容
        text = '10,1'
        items = tablewidget.findItems(text, Qt.MatchExactly)
        item = items[0]
        # 选中单元格
        item.setSelected(True)
        # 设置背景颜色
        item.setForeground(QBrush(QColor(255, 0, 0)))

        row = item.row()
        # 鼠标滚轮定位到第11行
        tablewidget.verticalScrollBar().setSliderPosition(row)
if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    window = table_position()
    window.show()
    sys.exit(app.exec_())

# 设置颜色
newitem = QTableWidgetItem('new')
newitem.setForeground(QBrush(QColor(0, 255, 0)))
tablewidget.setItem(10, 1, newitem)

# 加粗字体
newitem = QTableWidgetItem("new")
newitem.setFont(QFont("Times", 20, QFont.Bold))
tablewidget.setItem(10, 2, newitem)

tablewidget.sortItems(2, Qt.DescendingOrder) # 2 列，降序

# 文本对齐方式
newitem = QTableWidgetItem("michael")
newitem.setTextAlignment(Qt.AlignRight | Qt.AlignBottom)
tablewidget.setItem(10, 3, newitem)

# 合并单元格
tablewidget.setSpan(0, 0, 3, 1) # 0,0 位置 占据 3行 1列
tablewidget.setItem(0, 0, QTableWidgetItem("michael"))
tablewidget.setItem(1, 0, QTableWidgetItem("hello")) # 被占了，无效

# 设置单元格大小
tablewidget.setColumnWidth(0, 300)  # 0列 300宽
tablewidget.setRowHeight(0, 150)  # 0行 150高

# 不显示分割线
tablewidget.setShowGrid(False)

## 放置图片，调整大小
newitem = QTableWidgetItem(QIcon('../store.png'), "微软商店")
tablewidget.setItem(10, 3, newitem)
tablewidget.setIconSize(QSize(100, 100))

# 获取单元格内容
    tablewidget.itemClicked.connect(self.handleItemClicked)

def handleItemClicked(self, item):
    print('你点击了' + item.text())

def generateMenu(pos):
    row_num = -1
    for i in tablewidget.selectionModel().selection().indexes():
        row_num = i.row()

        menu = QMenu()
        item1 = menu.addAction("删除")
        item2 = menu.addAction("修改")
        item3 = menu.addAction("添加")
        action = menu.exec_(tablewidget.mapToGlobal(pos))
        if action == item1:
            print(f"选中了删除，行号：{row_num}")
        elif action == item2:
            print(f"选中了修改，行号：{row_num}")
        elif action == item3:
            print(f"选中了添加，行号：{row_num}")

# 允许右键菜单
tablewidget.setContextMenuPolicy(Qt.CustomContextMenu)
tablewidget.customContextMenuRequested.connect(generateMenu)

# _*_ coding: utf-8 _*_
# @Time : 2022/5/29 20:26
# @Author : Michael
# @File : treewidget01.py
# @desc :
import sys

from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon, QBrush
from PyQt5.QtWidgets import QApplication, QWidget, QTreeWidget, QTreeWidgetItem, QVBoxLayout, QMainWindow, QStyle


class TreeWidgetDemo(QMainWindow):
    def __init__(self):
        super(TreeWidgetDemo, self).__init__()
        self.setWindowTitle("TreeWidget Demo")
        self.tree = QTreeWidget()
        self.tree.setColumnCount(2)
        self.tree.setHeaderLabels(['Key', 'Value'])

        root = QTreeWidgetItem(self.tree)
        root.setText(0, 'group1')
        root.setIcon(0, self.style().standardIcon(QStyle.SP_DirIcon))

        self.tree.setColumnWidth(0, 150)
        ## 设置节点的背景颜色
        brush_red = QBrush(Qt.red)
        root.setBackground(0, brush_red)
        brush_green = QBrush(Qt.green)
        root.setBackground(1, brush_green)

        # 设置子节点1
        child1 = QTreeWidgetItem(root)
        child1.setText(0, 'child1')
        child1.setText(1, 'ios')
        child1.setIcon(0, QIcon("../store.png"))
        child1.setCheckState(0, Qt.Checked)

        # 设置子节点2
        child2 = QTreeWidgetItem(root)
        child2.setText(0, 'child2')
        child2.setText(1, '')

        # 设置子节点3
        child3 = QTreeWidgetItem(child2)
        child3.setText(0, 'child3')
        child3.setText(1, 'android')

        self.tree.addTopLevelItem(root)
        # 结点全部展开
        self.tree.expandAll()

        self.setCentralWidget(self.tree)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    tree = TreeWidgetDemo()
    tree.show()
    sys.exit(app.exec_())

	self.tree.clicked.connect(self.on_tree_clicked)
def on_tree_clicked(self):
    item = self.tree.currentItem()
    print(item.text(0), item.text(1))

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *

if __name__ == '__main__':
    app = QApplication(sys.argv)
    # Window系统提供的模式
    model = QDirModel()
    # 创建一个QtreeView部件
    tree = QTreeView()
    # 为部件添加模式
    tree.setModel(model)
    tree.setWindowTitle("QTreeView 例子")
    tree.resize(640, 480)
    tree.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/29 21:01
# @Author : Michael
# @File : qtab_demo.py
# @desc :
import sys

from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QApplication, QWidget, QTabWidget, QPushButton, QHBoxLayout, QVBoxLayout, QFormLayout, \
    QLineEdit, QRadioButton, QLabel, QCheckBox


class tab_demo(QTabWidget):
    def __init__(self):
        super().__init__()
        self.tab1 = QWidget()
        self.tab2 = QWidget()
        self.tab3 = QWidget()
        self.addTab(self.tab1, 'Tab1')
        self.addTab(self.tab2, 'Tab2')
        self.addTab(self.tab3, QIcon('../store.png'), 'Tab3')
        self.tab1UI()
        self.tab2UI()
        self.tab3UI()
        self.setWindowTitle('QTabWidget')

    def tab1UI(self):
        layout = QFormLayout()
        layout.addRow("姓名", QLineEdit())
        layout.addRow("地址", QLineEdit())
        self.setTabText(0, "联系方式")
        self.tab1.setLayout(layout)

    def tab2UI(self):
        layout = QFormLayout()
        sex = QHBoxLayout()
        sex.addWidget(QRadioButton("男"))
        sex.addWidget(QRadioButton("女"))
        layout.addRow(QLabel("性别"), sex)
        layout.addRow("生日", QLineEdit())
        self.setTabText(1, "个人详细信息")
        self.tab2.setLayout(layout)

    def tab3UI(self):
        layout = QHBoxLayout()
        layout.addWidget(QLabel("科目"))
        layout.addWidget(QCheckBox("物理"))
        layout.addWidget(QCheckBox("高数"))
        self.setTabText(2, "教育程度")
        self.tab3.setLayout(layout)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    demo = tab_demo()
    demo.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/29 21:16
# @Author : Michael
# @File : qstackedwidget.py
# @desc :
import sys

from PyQt5.QtWidgets import QWidget, QListWidget, QStackedWidget, QHBoxLayout, QApplication, QLabel, QCheckBox, \
    QLineEdit, QRadioButton, QFormLayout


class qstackedwidget_demo(QWidget):
    def __init__(self):
        super(qstackedwidget_demo, self).__init__()
        self.setWindowTitle("QStackedWidget控件")
        self.setGeometry(100, 100, 800, 600)

        self.leftlist = QListWidget()
        self.leftlist.insertItem(0, "联系方式")
        self.leftlist.insertItem(1, "个人信息")
        self.leftlist.insertItem(2, "教育经历")

        self.stack1 = QWidget()
        self.stack2 = QWidget()
        self.stack3 = QWidget()

        self.stack1UI()
        self.stack2UI()
        self.stack3UI()

        self.stack = QStackedWidget()
        self.stack.addWidget(self.stack1)
        self.stack.addWidget(self.stack2)
        self.stack.addWidget(self.stack3)

        hbox = QHBoxLayout()
        hbox.addWidget(self.leftlist)
        hbox.addWidget(self.stack)
        self.setLayout(hbox)
        self.leftlist.currentRowChanged.connect(self.display)

    def stack1UI(self):
        layout = QFormLayout()
        layout.addRow("姓名", QLineEdit())
        layout.addRow("地址", QLineEdit())
        self.stack1.setLayout(layout)

    def stack2UI(self):
        layout = QFormLayout()
        sex = QHBoxLayout()
        sex.addWidget(QRadioButton("男"))
        sex.addWidget(QRadioButton("女"))
        layout.addRow(QLabel("性别"), sex)
        layout.addRow("生日", QLineEdit())
        self.stack2.setLayout(layout)

    def stack3UI(self):
        layout = QHBoxLayout()
        layout.addWidget(QLabel("科目"))
        layout.addWidget(QCheckBox("物理"))
        layout.addWidget(QCheckBox("高数"))
        self.stack3.setLayout(layout)

    def display(self, i):
        self.stack.setCurrentIndex(i)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    demo = qstackedwidget_demo()
    demo.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/29 21:40
# @Author : Michael
# @File : qdock_demo.py
# @desc :
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QMainWindow, QHBoxLayout, QDockWidget, QListWidget, QApplication, QTextEdit


class qock_demo(QMainWindow):
    def __init__(self):
        super().__init__()
        layout = QHBoxLayout()
        bar = self.menuBar()
        file = bar.addMenu('File')
        file.addAction('New')
        file.addAction('Open')
        file.addAction('Save')
        self.setCentralWidget(QTextEdit())

        self.items = QDockWidget('Dockable', self)
        self.listWidget = QListWidget()
        self.listWidget.addItems(['Item 1', 'Item 2', 'Item 3'])
        self.items.setWidget(self.listWidget)
        self.items.setFloating(False)
        self.addDockWidget(Qt.RightDockWidgetArea, self.items)
        self.setLayout(layout)
        self.setWindowTitle('Dock例子')

if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    main = qock_demo()
    main.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/29 23:20
# @Author : Michael
# @File : qmultiDocInterface.py
# @desc :

import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *


class qmultiDocInterface(QMainWindow):
    count = 0

    def __init__(self, parent=None):
        super(qmultiDocInterface, self).__init__(parent)
        self.mdi = QMdiArea()
        self.setCentralWidget(self.mdi)
        bar = self.menuBar()
        file = bar.addMenu("File")
        file.addAction("New")
        file.addAction("cascade")
        file.addAction("Tiled")
        file.triggered[QAction].connect(self.windowaction)
        self.setWindowTitle("MDI demo")

    def windowaction(self, q):
        print("triggered")
        if q.text() == "New":
            qmultiDocInterface.count = qmultiDocInterface.count + 1
            sub = QMdiSubWindow()
            sub.setWidget(QTextEdit())
            sub.setWindowTitle("子窗口" + str(qmultiDocInterface.count))
            self.mdi.addSubWindow(sub)
            sub.show()
        if q.text() == "cascade":
            self.mdi.cascadeSubWindows() # 层叠
        if q.text() == "Tiled":
            self.mdi.tileSubWindows() # 平铺


if __name__ == '__main__':
    app = QApplication(sys.argv)
    demo = qmultiDocInterface()
    demo.show()
    sys.exit(app.exec_())

# _*_ coding: utf-8 _*_
# @Time : 2022/5/29 23:27
# @Author : Michael
# @File : qscrollbar.py
# @desc :
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *


class Example(QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()

    def initUI(self):
        hbox = QHBoxLayout()
        self.l1 = QLabel("拖动滑动条去改变颜色")
        self.l1.setFont(QFont("Arial", 16))
        hbox.addWidget(self.l1)
        self.s1 = QScrollBar()
        self.s1.setMaximum(255)
        self.s1.sliderMoved.connect(self.sliderval)
        self.s2 = QScrollBar()
        self.s2.setMaximum(255)
        self.s2.sliderMoved.connect(self.sliderval)
        self.s3 = QScrollBar()
        self.s3.setMaximum(255)
        self.s3.sliderMoved.connect(self.sliderval)
        hbox.addWidget(self.s1)
        hbox.addWidget(self.s2)
        hbox.addWidget(self.s3)
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('QScrollBar 例子')
        self.setLayout(hbox)

    def sliderval(self):
        print(self.s1.value(), self.s2.value(), self.s3.value())
        palette = QPalette()
        c = QColor(self.s1.value(), self.s2.value(), self.s3.value(), 255)
        palette.setColor(QPalette.Foreground, c)
        self.l1.setPalette(palette)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    demo = Example()
    demo.show()
    sys.exit(app.exec_())