【PyQt】12-滑块、计数控件

文章目录

• 前言
• 一、滑块控件 QSlider
• • 运行结果
• 二、计数器控件 QSpinBox
• • 运行结果
• 总结

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前言

1、滑块控件
2、计数控件

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一、滑块控件 QSlider

'''
#Author ：susocool
#Creattime:2024/2/15
#FileName:28-滑块控件
#Description: 通过滑块选择字体大小

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

class SliderDemo(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('滑块控件')
        self.resize(300,200)


        self.label = QLabel('请滑动刻度')
        self.label.setAlignment(Qt.AlignVCenter)    # 文本会在 Label 控件的垂直中心对齐

        self.slider = QSlider(Qt.Horizontal)

        self.label_Value = QLabel(str(self.slider.value()))     # 显示刻度的数值

        # 设置极值
        self.slider.setMinimum(12)
        self.slider.setMaximum(48)
        # 步长
        self.slider.setSingleStep(3)
        # 当前值
        self.slider.setValue(18)
        # 刻度位置
        self.slider.setTickPosition(QSlider.TicksBelow)
        # 刻度间隔
        self.slider.setTickInterval(6)

        self.slider.valueChanged.connect(self.valueChange)

        layout = QVBoxLayout ()
        layout.addWidget(self.label)
        layout.addWidget(self.slider)
        layout.addWidget(self.label_Value)
        self.setLayout(layout)

    def valueChange(self):
        print('当前值: %s' % self.slider.value())
        size = self.slider.value()
        self.label.setFont(QFont('Arial',size))
        self.label_Value.setText(str(size))


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

运行结果

二、计数器控件 QSpinBox

'''
#Author ：susocool
#Creattime:2024/2/15
#FileName:029-计数器控件
#Description: 数字选择

'''

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

class QSpinBoxDemo(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setWindowTitle('计数器控件展示')
        self.resize(300,100)

        self.label = QLabel('当前值')
        self.label.setAlignment(Qt.AlignVCenter)

        self.spinBox = QSpinBox()
        self.spinBox.setValue(17)       # 初始值
        self.spinBox.setSingleStep(3)   # 步长
        self.spinBox.setRange(10,40)    # 限制范围


        self.spinBox.valueChanged.connect(self.valueChange)

        layout = QVBoxLayout()
        layout.addWidget(self.label)
        layout.addWidget(self.spinBox)
        self.setLayout(layout)


    def valueChange(self):
        self.label.setText('当前值：'+str(self.spinBox.value()))


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

运行结果

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总结

这篇文章依旧没有总结