PyQt5中QSlider和QProgressBar的使用

今天是熟悉一下QSlider和QProgressBar的使用。实现如下界面：

 利用Qt designer生成转化的.py代码如下：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '01.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(661, 576)
        Form.setMinimumSize(QtCore.QSize(661, 576))
        Form.setMaximumSize(QtCore.QSize(661, 576))
        self.gridLayout_3 = QtWidgets.QGridLayout(Form)
        self.gridLayout_3.setObjectName("gridLayout_3")
        self.groupBox = QtWidgets.QGroupBox(Form)
        self.groupBox.setObjectName("groupBox")
        self.gridLayout_2 = QtWidgets.QGridLayout(self.groupBox)
        self.gridLayout_2.setObjectName("gridLayout_2")
        self.checkBox = QtWidgets.QCheckBox(self.groupBox)
        self.checkBox.setObjectName("checkBox")
        self.checkBox.setChecked(True)
        self.gridLayout_2.addWidget(self.checkBox, 0, 0, 1, 1)
        self.checkBox_2 = QtWidgets.QCheckBox(self.groupBox)
        self.checkBox_2.setObjectName("checkBox_2")
        self.checkBox_2.setChecked(False)
        self.gridLayout_2.addWidget(self.checkBox_2, 0, 1, 1, 1)
        self.radioButton = QtWidgets.QRadioButton(self.groupBox)
        self.radioButton.setObjectName("radioButton")
        self.gridLayout_2.addWidget(self.radioButton, 1, 0, 1, 1)
        self.radioButton_2 = QtWidgets.QRadioButton(self.groupBox)
        self.radioButton_2.setObjectName("radioButton_2")
        self.gridLayout_2.addWidget(self.radioButton_2, 1, 1, 1, 1)
        self.gridLayout_3.addWidget(self.groupBox, 1, 0, 1, 1)
        self.widget = QtWidgets.QWidget(Form)
        self.widget.setObjectName("widget")
        self.gridLayout = QtWidgets.QGridLayout(self.widget)
        self.gridLayout.setObjectName("gridLayout")
        self.label_2 = QtWidgets.QLabel(self.widget)
        self.label_2.setObjectName("label_2")
        self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)
        self.label = QtWidgets.QLabel(self.widget)
        self.label.setObjectName("label")
        self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
        self.horizontalScrollBar = QtWidgets.QScrollBar(self.widget)
        self.horizontalScrollBar.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalScrollBar.setObjectName("horizontalScrollBar")
        self.gridLayout.addWidget(self.horizontalScrollBar, 1, 1, 1, 1)
        self.label_3 = QtWidgets.QLabel(self.widget)
        self.label_3.setObjectName("label_3")
        self.gridLayout.addWidget(self.label_3, 2, 0, 1, 1)
        self.progressBar_2 = QtWidgets.QProgressBar(self.widget)
        self.progressBar_2.setProperty("value", 0)
        self.progressBar_2.setObjectName("progressBar_2")

        self.gridLayout.addWidget(self.progressBar_2, 2, 1, 1, 1)
        self.horizontalSlider = QtWidgets.QSlider(self.widget)
        self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalSlider.setObjectName("horizontalSlider")
        self.gridLayout.addWidget(self.horizontalSlider, 0, 1, 1, 1)
        self.gridLayout_3.addWidget(self.widget, 0, 0, 1, 1)

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.groupBox.setTitle(_translate("Form", "ProgressBar"))
        self.checkBox.setText(_translate("Form", "textVisible"))
        self.checkBox_2.setText(_translate("Form", "InvertedAppearance"))
        self.radioButton.setText(_translate("Form", "显示格式--百分比"))
        self.radioButton_2.setText(_translate("Form", "显示格式--当前值"))
        self.label_2.setText(_translate("Form", "Scrollbar"))
        self.label.setText(_translate("Form", "Slider"))
        self.label_3.setText(_translate("Form", "ProgressBar"))

主文件代码如下：

from slic import Ui_Form
from PyQt5.QtWidgets import QApplication,QWidget
from PyQt5.QtCore import pyqtSlot
import sys

class QmyWidget(QWidget):
    def __init__(self,parent=None):
        super().__init__(parent)
        self.ui = Ui_Form()
        self.ui.setupUi(self)

        self.ui.horizontalSlider.setMaximum(200)  #设置最大数值
        self.ui.horizontalScrollBar.setMaximum(200)
        self.ui.progressBar_2.setMaximum(200)
        self.ui.horizontalSlider.valueChanged.connect(self.do_valueChanged)
        self.ui.horizontalScrollBar.valueChanged.connect(self.do_valueChanged)

    def on_radioButton_clicked(self):  #显示格式——百分比
        self.ui.progressBar_2.setFormat("%p%")

    def on_radioButton_2_clicked(self):  #显示格式——当前值
        self.ui.progressBar_2.setFormat("%v")

    @pyqtSlot(bool)     #是否显示文字
    def on_checkBox_clicked(self,checked):
        self.ui.progressBar_2.setTextVisible(checked)

    @pyqtSlot(bool)    #InvertedAppearance复选框 (是否反向)
    def on_checkBox_2_clicked(self,checked):
        self.ui.progressBar_2.setInvertedAppearance(checked)

    def do_valueChanged(self,value):
        self.ui.progressBar_2.setValue(value)

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

以上功能主要使用QSlider和QProgressBar的几个属性和方法

value:QSlider和QProgressBar均有的属性，其值为QSlider或QProgressBar的数值

textVisible:为QProgressBar的方法，是否显示文字，参数为bool型，一般表示百分比的进度

format：为QProgressBar的方法，“%p%”显示百分比，“%v”显示当前值（也就是纯数字），“%m”显示总步数，一般默认为“%p%”.