PyQt5快速开发与实战 6.5 QGridLayout(网格布局)

PyQt5快速开发与实战

6. 第6章 PyQt5 布局管理

6.5 QGridLayout(网格布局)

QGridLayout（网格布局）是将窗口分隔成行和列的网格来进行排列。

通常可以使用函数addWidget()将被管理的控件(Widget)添加到窗口中,或者使用addLayout()函数将布局（Layout）添加到窗口中。也可以通过addWidget()函数对所添加的控件设置行数和列数的跨越，最后实现网格占据多个窗格。

QGridLayout类中的常用方法：

QGridLayout类的继承结构：

QObject → QLayout → QGridLayout

6.5.1 单一的网格单元格

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QGridLayout, QPushButton


class Winform(QWidget):
    def __init__(self, parent=None):
        super(Winform, self).__init__(parent)
        self.initUI()

    def initUI(self):
        # 1
        grid = QGridLayout()
        self.setLayout(grid)

        # 2
        names = ['Cls', 'Back', '', 'Close',
                 '7', '8', '9', '/',
                 '4', '5', '6', '*',
                 '1', '2', '3', '-',
                 '0', '.', '=', '+']

        # 3
        positions = [(i, j) for i in range(5) for j in range(4)]

        # 4
        for position, name in zip(positions, names):
            if name == '':
                continue

            button = QPushButton(name)
            grid.addWidget(button, *position)

        self.move(300, 150)
        self.setWindowTitle('网格布局管理例子')


if __name__ == "__main__":
    app = QApplication(sys.argv)
    form = Winform()
    form.show()
    sys.exit(app.exec_())
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6.5.2 跨越行和列的网格单元格

import sys
from PyQt5.QtWidgets import (QWidget, QLabel, QLineEdit, QTextEdit, QGridLayout, QApplication)


class Winform(QWidget):
    def __init__(self, parent=None):
        super(Winform, self).__init__(parent)
        self.initUI()

    def initUI(self):
        titleLabel = QLabel('标题')
        authorLabel = QLabel('提交人')
        contentLabel = QLabel('申告内容')

        titleEdit = QLineEdit()
        authorEdit = QLineEdit()
        contentEdit = QTextEdit()

        grid = QGridLayout()
        grid.setSpacing(10)

        grid.addWidget(titleLabel, 1, 0) ## 把titleLabel放在第1行第0列
        grid.addWidget(titleEdit, 1, 1) # 把titleEdit放在第1行第1列

        grid.addWidget(authorLabel, 2, 0)
        grid.addWidget(authorEdit, 2, 1)

        grid.addWidget(contentLabel, 3, 0)
        grid.addWidget(contentEdit, 3, 1, 5, 1) # 放在第3行第1列，跨越5行+1列

        self.setLayout(grid)

        self.setGeometry(300, 300, 350, 300)
        self.setWindowTitle('故障申告')


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