PyQt5復雜控件（樹控件、選項卡控件（滾動條控件、多文檔控件、停靠控件）

1、樹控件的基本使用方法QTreeWidget
'''
QTreeWidget樹控件的使用方法
添加圖標，添加表格，添加復選框等
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon,QBrush,QColor
import sys

class treewidget(QMainWindow):
    def __init__(self):
        super(treewidget,self).__init__()

        self.setWindowTitle("樹控件的基本用法")
        self.resize(800,300)

        #設置樹控件
        self.tree=QTreeWidget()
        self.tree.setColumnCount(2) #制定樹控件為兩列
        self.tree.setHeaderLabels(["key","value"]) #設置列標簽

        #添加根節點1
        root=QTreeWidgetItem(self.tree)
        root.setText(0,"根節點")
        root.setIcon(0,QIcon("./image/1.png"))
        self.tree.setColumnWidth(0,300)

        #添加子節點1
        n1=QTreeWidgetItem(root)
        n1.setText(0,"子節點1")
        n1.setText(1,"子節點的數據")
        n1.setIcon(0,QIcon("./image/1.png"))
        n1.setCheckState(0,Qt.Checked)  #添加復選框
        #添加子節點2
        n2=QTreeWidgetItem(root)
        n2.setText(0, "子節點2")
        n2.setText(1, "子節點2的數據")
        n2.setIcon(0, QIcon("./image/1.png"))
        n2.setCheckState(0, Qt.Checked)  # 添加復選框

        #為子節點再添加子節點2-1
        n3 = QTreeWidgetItem(n2)
        n3.setText(0, "子節點2-1")
        n3.setText(1, "子節點2-1的數據")
        n3.setIcon(0, QIcon("./image/1.png"))
        n3.setCheckState(0, Qt.Checked) # 添加復選框

        self.tree.expandAll()  #設置所有的節點為展開的狀態
        self.setCentralWidget(self.tree)

if __name__=="__main__":
    app=QApplication(sys.argv)
    p=treewidget()
    p.show()
    sys.exit(app.exec_())

2、樹控件添加響應事件
'''
樹控件響應事件
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import QIcon,QBrush,QColor
import sys

class treeevent(QMainWindow):
    def __init__(self):
        super(treeevent,self).__init__()

        self.setWindowTitle("樹控件的基本用法")
        self.resize(800,300)

        #創建樹控件，設置列數為2
        self.tree=QTreeWidget()
        self.tree.setColumnCount(2)
        self.tree.setHeaderLabels(["key","value"])

        root=QTreeWidgetItem(self.tree)
        root.setText(0,"root")
        root.setText(1,"1")

        c1=QTreeWidgetItem(root)
        c1.setText(0,"child1")
        c1.setText(1,"2")

        c2=QTreeWidgetItem(c1)
        c2.setText(0,"child2")
        c2.setText(1,"3")
        c3 = QTreeWidgetItem(c1)
        c3.setText(0, "child3")
        c3.setText(1, "4")

        #為樹節點設置信號與槽函數
        self.tree.clicked.connect(self.ontreeclick)
        self.setCentralWidget(self.tree)

    def ontreeclick(self,index):
        i=self.tree.currentItem()
        print(index.row())
        print('key=%s,value=%s' %(i.text(0),i.text(1)))

if __name__=="__main__":
    app=QApplication(sys.argv)
    p=treeevent()
    p.show()
    sys.exit(app.exec_())

3、樹控件增加、修改與刪減節點
'''
樹控件修改操作
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import QIcon,QBrush,QColor
import sys

class treechange(QWidget):
    def __init__(self):
        super(treechange,self).__init__()

        self.setWindowTitle("樹控件的節點刪減操作")
        self.resize(800,300)

        layout=QHBoxLayout()
        add=QPushButton("添加節點")
        update=QPushButton("修改節點")
        delete=QPushButton("刪除節點")

        layout.addWidget(add)
        layout.addWidget(update)
        layout.addWidget(delete)

        add.clicked.connect(self.add1)
        update.clicked.connect(self.update1)
        delete.clicked.connect(self.delete1)

       # 創建樹控件，設置列數為2
        self.tree = QTreeWidget()
        self.tree.setColumnCount(2)
        self.tree.setHeaderLabels(["key", "value"])

        root = QTreeWidgetItem(self.tree)
        root.setText(0, "root")
        root.setText(1, "1")

        c1 = QTreeWidgetItem(root)
        c1.setText(0, "child1")
        c1.setText(1, "2")

        c2 = QTreeWidgetItem(c1)
        c2.setText(0, "child2")
        c2.setText(1, "3")
        c3 = QTreeWidgetItem(c1)
        c3.setText(0, "child3")
        c3.setText(1, "4")
        # 為樹節點設置信號與槽函數
        self.tree.clicked.connect(self.ontreeclick)

        layout1=QVBoxLayout(self)
        layout1.addLayout(layout)
        layout1.addWidget(self.tree)
        self.setLayout(layout1)

        #顯示的系統的根目錄
        model = QDirModel()  # 當前的系統model
        tree = QTreeView()
        tree.setModel(model)
        tree.setWindowTitle("QTreeView控件與系統控件")
        tree.resize(800, 1000)
        layout1.addWidget(tree)

    def ontreeclick(self, index):
        i = self.tree.currentItem()
        print(index.row())
        print('key=%s,value=%s' % (i.text(0), i.text(1)))

    #添加樹節點
    def add1(self):
        print("添加節點")
        i=self.tree.currentItem() #獲取當前節點
        print(i)
        node=QTreeWidgetItem(i)   #為當前節點增加節點
        node.setText(0,"新節點")
        node.setText(1,"信值")

    #修改節點
    def update1(self):
        print("修改節點")
        node= self.tree.currentItem()  # 獲取當前節點
        node.setText(0, "修改節點")
        node.setText(1, "節點值已修改")

    #刪除節點
    def delete1(self):
        print("刪除節點")
        node = self.tree.currentItem()  # 獲取當前節點
        root=self.tree.invisibleRootItem() #根是不可見的，所以需要另外出來進行刪除
        if node in self.tree.selectedItems():
            (node.parent() or root).removeChild(node)

if __name__=="__main__":
    app=QApplication(sys.argv)
    p=treechange()
    p.show()
    sys.exit(app.exec_())

4、樹控件QTreeview控件
'''
QTreeview控件與系統定制模式
MODEL
QDirModel
'''
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
import sys

if __name__=="__main__":
    app=QApplication(sys.argv)

    #顯示當前的系統根目錄的列表
    model=QDirModel() #當前的系統model
    tree=QTreeView()
    tree.setModel(model)
    tree.setWindowTitle("QTreeView控件與系統控件")
    tree.resize(800,1000)
    tree.show()
    sys.exit(app.exec_())

5、選項卡控件QTabWidget控件

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

class tabwidgetDemo(QTabWidget):
    def __init__(self):
        super(tabwidgetDemo,self).__init__()

        self.setWindowTitle("選項卡控件QTabWidget")
        self.resize(800,300)

        #創建用於顯示控件的窗口
        self.tab1=QWidget()
        self.tab2=QWidget()
        self.tab3=QWidget()

        self.addTab(self.tab1,"選項卡1")
        self.addTab(self.tab2, "選項卡2")
        self.addTab(self.tab3, "選項卡3")

        self.tab1UI()  #初始化第一個選項卡顯示頁面
        self.tab2UI()
        self.tab3UI()

    #第一個選項卡的頁面設置
    def tab1UI(self):
        layout=QFormLayout()
        layout.addRow("姓名", QLineEdit())
        layout.addRow("地址",QLineEdit())
        self.setTabText(0,"聯系方式") #設置第一個選項卡的標題為聯系方式
        self.tab1.setLayout(layout)

    def tab2UI(self):
        layout1=QFormLayout()
        sex=QHBoxLayout()
        sex.addWidget(QRadioButton("男"))
        sex.addWidget(QRadioButton("女"))
        layout1.addRow(QLabel("性別"),sex)
        layout1.addRow("生日",QLineEdit())
        self.setTabText(1,"個人詳細信息")
        self.tab2.setLayout(layout1)

    def tab3UI(self):
        layout2=QHBoxLayout()
        layout2.addWidget(QLabel("科目"))
        layout2.addWidget(QCheckBox("物理"))
        layout2.addWidget(QCheckBox("高數"))
        self.setTabText(2,"教育程度")
        self.tab3.setLayout(layout2)

if __name__=="__main__":
    app=QApplication(sys.argv)
    p=tabwidgetDemo()
    p.show()
    sys.exit(app.exec_())

6、堆棧窗口控件（選項卡控件2）QStackWidget堆棧窗口

'''
QStackWidget堆棧窗口
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys

class stackwidgetDemo(QTabWidget):
    def __init__(self):
        super(stackwidgetDemo,self).__init__()

        self.setWindowTitle("堆棧控件QStackWidget")
        self.resize(1000,800)

        self.list=QListWidget()
        self.list.insertItem(0,"聯系信息")
        self.list.insertItem(1,"個人信息")
        self.list.insertItem(2,"教育程度")

        self.list.currentRowChanged.connect(self.display)
        self.stack1=QWidget()
        self.stack2=QWidget()
        self.stack3=QWidget()

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

        hb=QHBoxLayout()
        hb.addWidget(self.list)
        hb.addWidget(self.stack)
        self.setLayout(hb)

    def display(self,index):
        self.stack.setCurrentIndex(index)
        
        self.tab1UI()  #初始化第一個選項卡顯示頁面
        self.tab2UI()
        self.tab3UI()

   #第一個選項卡的頁面設置
    def tab1UI(self):
        layout=QFormLayout()
        layout.addRow("姓名", QLineEdit())
        layout.addRow("地址",QLineEdit())
        self.stack1.setLayout(layout)

    def tab2UI(self):
        layout1=QFormLayout()
        sex=QHBoxLayout()
        sex.addWidget(QRadioButton("男"))
        sex.addWidget(QRadioButton("女"))
        layout1.addRow(QLabel("性別"),sex)
        layout1.addRow("生日",QLineEdit())
        self.stack2.setLayout(layout1)

    def tab3UI(self):
        layout2=QHBoxLayout()
        layout2.addWidget(QLabel("科目"))
        layout2.addWidget(QCheckBox("物理"))
        layout2.addWidget(QCheckBox("高數"))
        self.stack3.setLayout(layout2)

if __name__=="__main__":
    app=QApplication(sys.argv)
    p=stackwidgetDemo()
    p.show()
    sys.exit(app.exec_())

7、停靠控件QDockWidget堆棧窗口

'''
QDockWidget堆棧窗口
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys


class dockwidgetDemo(QMainWindow):
    def __init__(self):
        super(dockwidgetDemo, self).__init__()

        self.setWindowTitle("停靠控件QDockWidget")
        self.resize(1000, 800)

        layout=QHBoxLayout()
        self.dock=QDockWidget("Dockable",self)
        self.listwidget=QListWidget()
        self.listwidget.addItem("item1")
        self.listwidget.addItem("item2")
        self.listwidget.addItem("item3")

        self.dock.setWidget(self.listwidget)
        self.setCentralWidget(QTextEdit("編輯器"))

        #設置默認停靠在右邊
        self.addDockWidget(Qt.RightDockWidgetArea,self.dock)
        self.dock.setFloating(True) #使其處於懸浮狀態
        self.setLayout(layout)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    p = dockwidgetDemo()
    p.show()
    sys.exit(app.exec_())

8、容納多文檔窗口控件
'''
在主窗口中可以創建多個文檔窗口,窗口容器
A：QMdiArea 容納多窗口類
B:QMdiSubWindow 多窗口類
B放入A中
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys

class multiwindow(QMainWindow):
    count=0
    def __init__(self,parent=None):
        super(multiwindow, self).__init__(parent)
        self.setWindowTitle("容納多文檔窗口")

        self.mdi=QMdiArea() #創建一個多文檔容納器

        bar=self.menuBar()  #創建一個菜單
        file=bar.addMenu("File")
        file.addAction("new")
        file.addAction("cascade")
        file.addAction("tiled")

        file.triggered.connect(self.windowaction)
        self.setCentralWidget(self.mdi)

    def windowaction(self,q):
        if q.text()=="new":
            #記錄子窗口的數目
 multiwindow.count=multiwindow.count+1
            #x新建一個多文檔窗口
            sub=QMdiSubWindow()
            sub.setWidget(QTextEdit())
            sub.setWindowTitle("子窗口"+str(multiwindow.count))
            #將多文檔窗口放置在多文檔容器中去
            self.mdi.addSubWindow(sub)
            sub.show()
        #重疊的排列方式
        elif q.text()=="cascade":
            self.mdi.cascadeSubWindows()
        #拼接的排列方式
        elif q.text()=="tiled":
            self.mdi.tileSubWindows()

if __name__ == "__main__":
    app = QApplication(sys.argv)
    p = multiwindow()
    p.show()
    sys.exit(app.exec_())

9、滾動條控件QScrollBar控件
'''
QScrollBar控件
1.通過滾動條的值的變化來控制其他控件狀態的變化
2.通過滾動條值的變化控制控件位置的變化
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys

class scrollbar(QWidget):
    count=0
    def __init__(self):
        super(scrollbar, self).__init__()
        self.initUI()
    def initUI(self):
        h=QHBoxLayout()
        self.label=QLabel("拖動滾動條去改變文字顏色")
        h.addWidget(self.label)

        self.scrol1=QScrollBar()
        self.scrol1.setMaximum(255)
        self.scrol1.sliderMoved.connect(self.slidemoved)

        self.scrol2 = QScrollBar()
        self.scrol2.setMaximum(255)
        self.scrol2.sliderMoved.connect(self.slidemoved)

        self.scrol3 = QScrollBar()
        self.scrol3.setMaximum(255)
        self.scrol3.sliderMoved.connect(self.slidemoved)

        self.scrol4 = QScrollBar()
        self.scrol4.setMaximum(255)
        self.scrol4.sliderMoved.connect(self.slidemoved1)

        h.addWidget(self.scrol1)
        h.addWidget(self.scrol2)
        h.addWidget(self.scrol3)
        h.addWidget(self.scrol4)

        self.y=self.label.pos().y()

        self.setGeometry(300,300,300,200)
        self.setLayout(h)
        self.setWindowTitle("滾動條控件")

    #設置一些控件的狀態
    def slidemoved(self):
        print(self.scrol1.value(),self.scrol2.value(),self.scrol3.value())
        p=QPalette()
        c=QColor(self.scrol1.value(),self.scrol2.value(),self.scrol3.value(),255)
        p.setColor(QPalette.Foreground,c)
        self.label.setPalette(p)

    #設置一些控件的位置
    def slidemoved1(self):
        self.label.move(self.label.x(),self.y+self.scrol4.value())

if __name__ == "__main__":
    app = QApplication(sys.argv)
    p = scrollbar()
    p.show()
    sys.exit(app.exec_())