datetime:2019/5/21 17:38

author:nzb

进度条

import sys
from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QGroupBox, \
    QHBoxLayout, QPushButton, QVBoxLayout, QSpinBox, QLCDNumber
from PyQt5.QtWidgets import QDial, QProgressBar
from PyQt5 import QtGui, QtCore
from PyQt5.QtCore import Qt, QThread, pyqtSignal
import time


class MyThead(QThread):

    change_value = pyqtSignal(int)

    def run(self):
        cnt = 0
        while cnt < 100:
            cnt += 1

            time.sleep(0.3)
            self.change_value.emit(cnt)


class UI_demo(QWidget):
    """用户界面"""
    def __init__(self):
        super().__init__()

        # 窗口信息
        self.title = 'PyQt5 ProgressBar'
        self.left = 600
        self.top = 200
        self.width = 350
        self.height = 100
        self.iconName = '../img/home.ico'

        self.initWindow()

    def initWindow(self):

        # 窗口信息
        self.setWindowIcon(QtGui.QIcon(self.iconName))  # 图标设置
        self.setGeometry(self.left, self.top, self.width, self.height)  # 大小位置设置
        self.setWindowTitle(self.title)  # 窗口标题

        # 生成进度条
        self.initUI()

        # 展示窗口
        self.show()

    def initUI(self):
        """进度条"""
        vbox = QVBoxLayout()
        self.progressbar = QProgressBar()
        self.progressbar.setMaximum(100)
        # 设置进度条样式
        self.progressbar.setStyleSheet('QProgressBar {border:2px solid grey; border-radius:8px; padding:1px}' 
                                       'QProgressBar::chunk {background:green}')
        # self.progressbar.setOrientation(Qt.Vertical)  # 垂直进度条
        self.progressbar.setTextVisible(False)  # 数字显示不可见
        vbox.addWidget(self.progressbar)

        self.button = QPushButton("run progressbar")
        self.button.clicked.connect(self.startProgressbar)
        self.button.setStyleSheet('background-color:yellow')
        vbox.addWidget(self.button)

        self.setLayout(vbox)

    def startProgressbar(self):
        """开始进度条"""
        self.thread = MyThead()
        self.thread.change_value.connect(self.setProgressVal)
        self.thread.start()

    def setProgressVal(self, val):
        """设置进度条的值"""
        self.progressbar.setValue(val)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    ex = UI_demo()
    sys.exit(app.exec_())