PyQt5学习笔记--GridLayout、FormLayout和StackedLayout布局

目录

1--GridLayout布局

2--FormLayout布局

3--StackedLayout布局

---

1--GridLayout布局

import sys
 
from PyQt5.QtWidgets import *
 
class MyWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()
    def init_ui(self):
        self.setWindowTitle("Calculator")
 
        # 准备数据
        data = {
            0:["7", "8", "9", "+", "("],
            1:["4", "5", "6", "-", ")"],
            2:["1", "2", "3", "*", "<-"],
            3:["0", ".", "=", "/", "C"]
        }
 
        # 整体垂直布局
        layout = QVBoxLayout()
 
        # 输入框
        edit = QLineEdit()
        edit.setPlaceholderText("请输入内容")
        # 把输入框添加到容器中
        layout.addWidget(edit)
 
        # 网格布局
        grid = QGridLayout()
 
        # 循环创建
        for line_number, line_data in data.items():
            for col_number, number in enumerate(line_data):
                btn = QPushButton(number)
                grid.addWidget(btn, line_number, col_number)
 
        # 网格布局追加到容器当中
        layout.addLayout(grid)
 
        self.setLayout(layout)
if __name__ == "__main__":
    app = QApplication(sys.argv)  # 创建对象
 
    w = MyWindow()
    w.show()
 
    # 程序进行循环等待状态
    app.exec_()

2--FormLayout布局

import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import *
 
class MyWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()
    def init_ui(self):
 
        # 固定宽高
        self.setFixedSize(300, 150)
 
        # 外层容器
        container = QVBoxLayout()
 
        # 表单容器
        form_layout = QFormLayout()
 
        # 创建1个输入框
        edit = QLineEdit()
        edit.setPlaceholderText("请输入账号")
        form_layout.addRow("账号：", edit)
 
        # 创建另外一个输入框
        edit2 = QLineEdit()
        edit2.setPlaceholderText("请输入密码")
        form_layout.addRow("密码：", edit2)
 
        # 将from_layout添加到垂直布局中
        container.addLayout(form_layout)
 
        # 按钮
        login_btn = QPushButton("登录")
        login_btn.setFixedSize(100, 30)
 
        # 将按钮添加到容器中，并指定其对齐方式
        container.addWidget(login_btn, alignment=Qt.AlignRight)
 
        self.setLayout(container)
 
if __name__ == "__main__":
    app = QApplication(sys.argv)  # 创建对象
 
    w = MyWindow()
    w.show()
 
    # 程序进行循环等待状态
    app.exec_()

3--StackedLayout布局

import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import *
 
class Window1(QWidget):
    def __init__(self):
        super().__init__()
        QLabel("界面1要显示的内容", self)
        self.setStyleSheet("background-color:green;")
 
class Window2(QWidget):
    def __init__(self):
        super().__init__()
        QLabel("界面2要显示的内容", self)
        self.setStyleSheet("background-color:red;")
 
class MyWindow(QWidget):
    def __init__(self):
        super().__init__()
        self.create_stacked_layout()
        self.init_ui()
 
    def create_stacked_layout(self):
        # 创建堆栈（抽屉）布局
        self.stacked_layout = QStackedLayout()
        win1 = Window1()
        win2 = Window2()
        # 将创建的2个Widget添加到抽屉布局器中
        self.stacked_layout.addWidget(win1) # index0
        self.stacked_layout.addWidget(win2) # index1
 
    def init_ui(self):
        # 固定Widget大小
        self.setFixedSize(300, 270)
 
        # 1-创建整体的布局器
        container = QVBoxLayout()
 
        # 2-创建1个要显示具体内容的子Widget
        widget = QWidget()
        widget.setLayout(self.stacked_layout)
        widget.setStyleSheet("background-color:grey;")
 
        # 3-创建两个button, 用于点击进行切换抽屉布局器中的Widget
        btn_press1 = QPushButton("抽屉1")
        btn_press2 = QPushButton("抽屉2")
        # 给按钮添加事件（即点击后要调用的函数）
        btn_press1.clicked.connect(self.btn_press1_clicked)
        btn_press2.clicked.connect(self.btn_press2_clicked)
 
        # 4-将需要显示的空间添加到布局器中
        container.addWidget(widget)
        container.addWidget(btn_press1)
        container.addWidget(btn_press2)
 
        # 5-设置当前要显示的Widget，从而能够显示这个布局器中的控件
        self.setLayout(container)
 
    def btn_press1_clicked(self):
        # 设置抽屉布局器的当前索引值，即可切换显示哪个Widget
        self.stacked_layout.setCurrentIndex(0)
 
    def btn_press2_clicked(self):
        self.stacked_layout.setCurrentIndex(1)
 
 
if __name__ == "__main__":
    app = QApplication(sys.argv)  # 创建对象
 
    w = MyWindow()
    w.show()
 
    # 程序进行循环等待状态
    app.exec_()