PyQt5四大布局方式

1、绝对布局方式
'''
绝对布局方式,通过move的XY坐标方式来控制控件的位置
'''
from PyQt5.QtWidgets import *
import sys,math

class absolutelayout(QWidget):
    def __init__(self):
        super(absolutelayout,self).__init__()
        self.setWindowTitle("绝对布局方式")
        self.label1=QLabel("欢迎",self)
        self.label1.move(15,20)

        self.label2 = QLabel("欢迎",self)
        self.label2.move(35, 40)

        self.label3 = QLabel("欢迎",self)
        self.label3.move(55, 80)

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

2、水平盒方式QHBoxLayout（）

'''
水平盒布局方式
'''
from PyQt5.QtWidgets import *
import sys,math

class hboxlayout(QWidget):
    def __init__(self):
        super(hboxlayout,self).__init__()
        self.setWindowTitle("水平盒布局方式")
        self.layout=QHBoxLayout()

        self.label1=QLabel("欢迎")
        self.label2 = QLabel("欢迎")
        self.label3 = QLabel("欢迎")
        self.label4 = QLabel("欢迎")
        self.label5 = QLabel("欢迎")

        self.layout.addWidget(self.label1)
        self.layout.addWidget(self.label2)
        self.layout.addWidget(self.label3)
        self.layout.addWidget(self.label4)
        self.layout.addWidget(self.label5)

        # 设置水平盒布局的控件间距大小
        self.layout.setSpacing(100)
        self.setLayout(self.layout)

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

3、水平布局设置伸缩量
'''
设置控件的伸缩量
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math


class absolutelayout(QWidget):
    def __init__(self):
        super(absolutelayout, self).__init__()
        self.setWindowTitle("设置伸缩量")
        self.resize(800,100)
        self.layout = QHBoxLayout()

        self.btn1=QPushButton("按钮1")
        self.btn2= QPushButton("按钮2")
        self.btn3= QPushButton("按钮3")
        self.btn4 = QPushButton("按钮4")
        self.btn5 = QPushButton("按钮5")

        #将前五个按钮放在左边显示
        self.layout.addStretch(0)  #设置布局的伸缩量-默认右对齐方式
        self.layout.addWidget(self.btn1)
        self.layout.addWidget(self.btn2)
        self.layout.addWidget(self.btn3)
        self.layout.addWidget(self.btn4)
        self.layout.addWidget(self.btn5)

        #将第6个和第7个按钮放在右边显示
        self.btn6=QPushButton("按钮6")
        self.btn7=QPushButton("按钮7")
        self.layout.addStretch(1)
        self.layout.addWidget(self.btn6)
        self.layout.addWidget(self.btn7)

        self.setLayout(self.layout)

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

4、水平盒方式QHBoxLayout的对齐方式
'''
水平盒布局方式控件对齐方式
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class absolutelayout(QWidget):
    def __init__(self):
        super(absolutelayout, self).__init__()
        self.setWindowTitle("控件对齐方式")
        self.layout = QHBoxLayout()

        self.label1 = QLabel("欢迎")
        self.label2 = QLabel("欢迎")
        self.label3 = QLabel("欢迎")
        self.label4 = QLabel("欢迎")
        self.label5 = QLabel("欢迎")

        #设置水平盒布局的对齐方式layout.addwidget(控件，控件位置长度比例，对齐方式)
        self.layout.addWidget(self.label1,2,Qt.AlignLeft | Qt.AlignTop)
        self.layout.addWidget(self.label2,1,Qt.AlignLeft | Qt.AlignTop)
        self.layout.addWidget(self.label3,1,Qt.AlignLeft | Qt.AlignBottom)
        self.layout.addWidget(self.label4,1,Qt.AlignLeft | Qt.AlignBottom)
        self.layout.addWidget(self.label5,1,Qt.AlignLeft)

        # 设置水平盒布局的控件间距大小
        self.layout.setSpacing(20)
        self.setLayout(self.layout)

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

5、垂直盒方式QVBoxLayout（）
'''
垂直盒布局方式
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class vboxlayout(QWidget):
    def __init__(self):
        super(vboxlayout, self).__init__()
        self.setWindowTitle("垂直盒布局方式")
        self.resize(100,2000)
        self.layout = QVBoxLayout()

        self.label1 = QPushButton("欢迎")
        self.label2 = QPushButton("欢迎")
        self.label3 = QPushButton("欢迎")
        self.label4 = QPushButton("欢迎")
        self.label5 = QPushButton("欢迎")

        #设置垂直盒布局的对齐方式layout.addwidget(控件，控件位置长度比例，对齐方式)
        self.layout.addWidget(self.label1)
        self.layout.addWidget(self.label2)
        self.layout.addWidget(self.label3)
        self.layout.addWidget(self.label4)
        self.layout.addWidget(self.label5)

        # 设置垂直盒布局的控件间距大小
        self.layout.setSpacing(20)
        self.setLayout(self.layout)


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

6、将按钮永远放在窗口右下角

'''
将按钮永远放在窗口的右下角
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class rightbutton(QWidget):
    def __init__(self):
        super(rightbutton, self).__init__()
        self.setWindowTitle("按钮放在窗口的右下角")
        self.resize(400,300)

        ok=QPushButton("确定")
        cancel=QPushButton("取消")

        h=QHBoxLayout()
        h.addStretch(1)
        h.addWidget(ok)
        h.addWidget(cancel)

        v=QVBoxLayout()
        bt1=QPushButton("按钮1")
        bt2 = QPushButton("按钮2")
        bt3 = QPushButton("按钮3")

        v.addStretch(0)   #放在上面
        v.addWidget(bt1)
        v.addWidget(bt2)
        v.addWidget(bt3)

        v.addStretch(1)  #始终保持在放在右下角
        v.addLayout(h)
        self.setLayout(v)

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

7、栅格布局方式QGridLayout()

#栅格布局：实现计算器

'''
实现计算器功能
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class calcu(QWidget):
    def __init__(self):
        super(calcu, self).__init__()
        self.setWindowTitle("栅格布局实现计算器UI")
        self.resize(400,300)
        grid=QGridLayout()

        names=["CLS","Back","","Close",
              "7","8","9","/",
              "4","5","6","*",
              "1","2","3","-",
              "0",".","=","+"]
        positions=[(i,j) for i in range(5) for j in range(4)]

        for position,name in zip(positions,names):   #采用zip组合循环的方式来进行对象的匹配
            if name=="":
                continue
            print(position)
            print(name)
            b=QPushButton(name)
            #grid.addWidget(b,position[0],position[1])  #放置控件名称，位置坐标x,位置坐标y

      grid.addWidget(b, *position)  #  *p表示将元组（x,y）转换为x y 


        self.setLayout(grid)

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

8、栅格布局2

#栅格布局：实现表单UI设计
'''
实现表单设计
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class table(QWidget):
    def __init__(self):
        super(table, self).__init__()
        self.setWindowTitle("栅格布局实现表单UI设计")
        #self.resize(400,300)
        grid=QGridLayout()

        label1=QLabel("标题")
        label2=QLabel("作者")
        label3=QLabel("内容")

        l1=QLineEdit()
        l2=QLineEdit()
        l3=QTextEdit()
        grid.setSpacing(10)

        grid.addWidget(label1,1,0)
        grid.addWidget(l1,1,1)

        grid.addWidget(label2,2,0)
        grid.addWidget(l2,2,1)

        grid.addWidget(label3,3,0,5,1,Qt.AlignCenter) #占据伸缩比为5行1列
        grid.addWidget(l3,3,1,5,1)  #占据比例为5行1列

        self.setLayout(grid)

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

9、表单布局QFormLayout()

'''
实现表单设计
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class tab(QWidget):
    def __init__(self):
        super(tab, self).__init__()
        self.setWindowTitle("表单布局")
        form=QFormLayout()

        label1=QLabel("标题")
        label2=QLabel("作者")
        label3=QLabel("内容")

        l1=QLineEdit()
        l2=QLineEdit()
        l3=QTextEdit()

        # 表单布局直接使用addrow(函数)进行表单布局的放置
        form.addRow(label1,l1)
        form.addRow(label2,l2)
        form.addRow(label3,l3)
        self.setLayout(form)

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

10、拖动控件边界QSplitter控件

# 拖动控件之间的边界QSplitter控件
'''
改变不同控件之间的边界
'''
from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt
import sys, math

class splitter(QWidget):
    def __init__(self):
        super(splitter, self).__init__()
        self.setWindowTitle("拖动控件之间的边界")
        self.setGeometry(300,300,300,200)

        topleft=QFrame()
        topleft.setFrameShape(QFrame.StyledPanel)

        bottom = QTextEdit("编辑器")

        #设置所包含的控件之间可以水平拖动，基本设置为水平布局
        splitter1=QSplitter(Qt.Horizontal)

        text=QTextEdit("代码区")
        splitter1.addWidget(topleft)
        splitter1.addWidget(text)

        #设置默认的控件之间的大小距离
        splitter1.setSizes([100,200])

        #设置所包含的控件之间可以垂直拖动，设置我垂直布局
        splitter2= QSplitter(Qt.Vertical)

        text = QTextEdit()
        splitter2.addWidget(splitter1)
        splitter2.addWidget(bottom)

        h=QVBoxLayout()
        h.addWidget(splitter2)
        self.setLayout(h)

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