PyQt5 QLCD倒数计时 [英] PyQt5 QLCD Countdown
本文介绍了PyQt5 QLCD倒数计时的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在为带有gui的倒数计时器构建应用程序，请参见下图:
i am working to build an app with countdown timer for gui see the Picture below:
在左下角设置时间.橙色按钮用于将开始时间放入程序以及绿色LCD.使用开始按钮，我试图启动绿色液晶显示屏以倒数秒.但是，我无法使它正常工作.该程序只是退出而不执行任何操作.希望您可以检查我的代码并告诉我我需要更改的内容.试图使其与计时器发生.仅显示辅助时间.当运行updateLCD应用程序时，只需在下面找到gui的新代码和Control的代码即可.
On the bottom left you set the time. The orange button is to put the start time into the programm as well as into the green lcd. With the start Button I am trying to start the green lcd to countdown the seconds. However I cannot get this to work. The Programm just Exits doing nothing. I hope you can check my code an tell me what I Need to Change. Tried to make it happen with a timer. Just displaying the atcual time. When running the updateLCD the app just find the new Code for gui and the code for Control below.
.display()函数似乎杀死了该应用程序.如果我将其注释掉，则什么都不会发生，但应用程序保持打开状态.非常感谢Advance.
It seems that the .display() function kills the app. If I comment it out Nothing happens but the app stays open. Thanks a lot in Advance.
第一个.pyw代码:从PyQt5导入QtCore，QtGui，QtWidgets
First .pyw code: from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_set_time(object):
def setupUi(self, set_time):
set_time.setObjectName("set_time")
set_time.resize(1125, 824)
self.job_time = QtWidgets.QTimeEdit(set_time)
self.job_time.setGeometry(QtCore.QRect(10, 770, 231, 41))
self.job_time.setStyleSheet("font: 75 16pt \"MS Shell Dlg 2\";")
self.job_time.setTime(QtCore.QTime(0, 0, 0))
self.job_time.setObjectName("job_time")
self.start_button = QtWidgets.QPushButton(set_time)
self.start_button.setGeometry(QtCore.QRect(960, 40, 150, 90))
self.start_button.setStyleSheet("font: 75 22pt \"MS Shell Dlg 2\";\n"
"background-color: rgb(0, 255, 0);")
self.start_button.setAutoDefault(False)
self.start_button.setDefault(False)
self.start_button.setFlat(False)
self.start_button.setObjectName("start_button")
self.pause_button = QtWidgets.QPushButton(set_time)
self.pause_button.setGeometry(QtCore.QRect(960, 140, 150, 90))
self.pause_button.setStyleSheet("background-color: rgb(255, 255, 0);\n"
"font: 75 22pt \"MS Shell Dlg 2\";")
self.pause_button.setObjectName("pause_button")
self.finish_button = QtWidgets.QPushButton(set_time)
self.finish_button.setGeometry(QtCore.QRect(960, 240, 150, 90))
self.finish_button.setStyleSheet("background-color: rgb(0, 85, 255);\n"
"font: 75 22pt \"MS Shell 2\";\n"
"color: rgb(255, 255, 255);")
self.finish_button.setObjectName("finish_button")
self.label = QtWidgets.QLabel(set_time)
self.label.setGeometry(QtCore.QRect(10, 720, 231, 40))
self.label.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.label.setFrameShadow(QtWidgets.QFrame.Sunken)
self.label.setLineWidth(10)
self.label.setMidLineWidth(10)
self.label.setObjectName("label")
self.kill_Button = QtWidgets.QPushButton(set_time)
self.kill_Button.setGeometry(QtCore.QRect(960, 720, 150, 90))
self.kill_Button.setObjectName("kill_Button")
self.label_2 = QtWidgets.QLabel(set_time)
self.label_2.setGeometry(QtCore.QRect(260, 720, 261, 40))
self.label_2.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.label_2.setFrameShadow(QtWidgets.QFrame.Sunken)
self.label_2.setLineWidth(10)
self.label_2.setMidLineWidth(10)
self.label_2.setObjectName("label_2")
self.lineEdit = QtWidgets.QLineEdit(set_time)
self.lineEdit.setGeometry(QtCore.QRect(260, 770, 261, 41))
self.lineEdit.setObjectName("lineEdit")
self.remaining_time = QtWidgets.QLCDNumber(set_time)
self.remaining_time.setGeometry(QtCore.QRect(0, 50, 911, 221))
self.remaining_time.setStyleSheet("background-color: rgb(0, 0, 0);\n"
"color: rgb(0, 255, 0);")
self.remaining_time.setDigitCount(8)
self.remaining_time.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
self.remaining_time.setObjectName("remaining_time")
self.label_3 = QtWidgets.QLabel(set_time)
self.label_3.setGeometry(QtCore.QRect(0, 10, 911, 40))
self.label_3.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.label_3.setFrameShadow(QtWidgets.QFrame.Sunken)
self.label_3.setLineWidth(10)
self.label_3.setMidLineWidth(10)
self.label_3.setObjectName("label_3")
self.extra_time = QtWidgets.QLCDNumber(set_time)
self.extra_time.setGeometry(QtCore.QRect(0, 320, 911, 221))
self.extra_time.setStyleSheet("background-color: rgb(0, 0, 0);\n"
"color: rgb(255, 0, 0);")
self.extra_time.setDigitCount(8)
self.extra_time.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
self.extra_time.setObjectName("extra_time")
self.label_4 = QtWidgets.QLabel(set_time)
self.label_4.setGeometry(QtCore.QRect(0, 280, 911, 40))
self.label_4.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.label_4.setFrameShadow(QtWidgets.QFrame.Sunken)
self.label_4.setLineWidth(10)
self.label_4.setMidLineWidth(10)
self.label_4.setObjectName("label_4")
self.set_button = QtWidgets.QPushButton(set_time)
self.set_button.setGeometry(QtCore.QRect(530, 720, 150, 90))
self.set_button.setStyleSheet("background-color: rgb(255, 170, 0);\n"
"font: 75 16pt \"MS Shell Dlg 2\";")
self.set_button.setObjectName("set_button")
self.retranslateUi(set_time)
QtCore.QMetaObject.connectSlotsByName(set_time)
def retranslateUi(self, set_time):
_translate = QtCore.QCoreApplication.translate
set_time.setWindowTitle(_translate("set_time", "Dialog"))
self.job_time.setWhatsThis(_translate("set_time", "<html><head/><body><p>Hier die Zeit für den Auftrag eintragen</p><p><br/></p></body></html>"))
self.job_time.setDisplayFormat(_translate("set_time", "HH:mm:ss"))
self.start_button.setText(_translate("set_time", "Start"))
self.pause_button.setText(_translate("set_time", "Pause"))
self.finish_button.setText(_translate("set_time", "Fertig"))
self.label.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:14pt; font-weight:600;\">Vorgabe Zeit:</span></p></body></html>"))
self.kill_Button.setText(_translate("set_time", "Beenden"))
self.label_2.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:14pt; font-weight:600;\">Auftragsnummer:</span></p><p><br/></p></body></html>"))
self.label_3.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:16pt; font-weight:600;\">Verbleibende Zeit:</span></p></body></html>"))
self.label_4.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:16pt; font-weight:600;\">Überzogene Zeit:</span></p></body></html>"))
self.set_button.setText(_translate("set_time", "Setzen"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
set_time = QtWidgets.QDialog()
ui = Ui_set_time()
ui.setupUi(set_time)
set_time.show()
sys.exit(app.exec_())
第二个控制代码:
from PyQt5 import QtWidgets, QtCore, QtGui
import StortiTimer
class ControlLCD(QtWidgets.QWidget):
def __init__(self, parent = None):
QtWidgets.QWidget.__init__(self, parent)
self.ui = StortiTimer.Ui_set_time()
self.ui.setupUi(self)
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.updateLCD)
self.timer.start(1000)
def updateLCD(self):
self.currenttime = QtCore.QTime.currentTime()
self.printtimer = self.currenttime.toString("hh:mm:ss")
self.update
self.self.ui.remaining_time.display(self.printtimer)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
c = ControlLCD()
c.show()
sys.exit(app.exec_())
推荐答案
我相信我已经解决了以下代码中的关键问题.
I believe I've addressed the key issues in the code below.
我将您的例程放在一个整体类中，以简化调用.
I pulled your routines into one overall class to simplify the calls.
您的按钮不起作用，因为您需要将它们连接到帮助程序.例如:
Your buttons weren't working because you needed to connect them to helper procedures. For example:
def onClickStartTimer(self):
self.timer.start()
...
self.start_button = QPushButton(set_time)
self.start_button.clicked.connect(self.onClickStartTimer)
然后，计时器启动和停止控件进入相应的帮助程序.
The timer start and stop controls then go into the appropriate helper procedures.
我修改了updateLCD以减少您的当前时间"，每次调用QTime()变量1秒钟，然后显示时间.添加了测试以使其达到零后停止计数器.还更新了Setzen按钮助手例程，以调用updateLCD来显示您的初始时间设置.
I modified updateLCD to decrement your "currenttime" QTime() variable by 1 second every time it is called, and then to display the time. Added test to stop counter after it hit zero. Also updated your Setzen button helper routine to call updateLCD to display your initial time setting.
我添加了代码，使暂停"在计时器的开始和停止之间切换，这取决于计时器的当前状态，这正是我想要的.
I added code to make Pause toggle between timer start and stop, depending on the current state of the timer, which is what I assume you wanted.
希望这会有所帮助.请参阅以下内容:
Hope this helps. See the following:
# -*- coding: utf-8 -*-
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
# import StortiTimer
@pyqtSlot() # Enable slots
class Ui_set_time(object):
def onClickStartTimer(self):
self.timer.start()
def updateLCD(self): # Subtract 1 sec from currenttime and display it
self.currenttime = self.currenttime.addSecs(-1) # Subtract 1 second from currenttime
self.printtimer = self.currenttime.toString("hh:mm:ss")
self.remaining_time.display(self.printtimer)
if self.currenttime == QTime(0,0,0): # Stop after displaying zero seconds. Place any other needed actions under here when hitting zero.
self.timer.stop()
def onClickPauseTimer(self):
# Toggle between stop and start
if self.timer.isActive():
self.timer.stop()
else:
self.timer.start()
def onClickFinish(self):
self.timer.stop()
def onClickKill(self):
# Don't know what goes in here
pass
print("In kill button")
def onClickSetTimer(self):
self.starttime = self.job_time.time()
self.currenttime = self.starttime.addSecs(1) # Account for updateLCD subtracting 1
self.updateLCD() # Subtract 1 sec from currenttime and display this initial time
def setupUi(self, set_time):
self.timer = QTimer()
self.timer.setInterval(1000) # Fire every 1000 ms
self.timer.timeout.connect(self.updateLCD)
set_time.setObjectName("set_time")
set_time.resize(1125, 824)
self.job_time = QTimeEdit(set_time)
self.job_time.setGeometry(QRect(10, 770, 231, 41))
self.job_time.setStyleSheet("font: 75 16pt \"MS Shell Dlg 2\";")
self.job_time.setTime(QTime(0, 0, 0))
self.job_time.setObjectName("job_time")
self.start_button = QPushButton(set_time)
self.start_button.setGeometry(QRect(960, 40, 150, 90))
self.start_button.setStyleSheet("font: 75 22pt \"MS Shell Dlg 2\";\n"
"background-color: rgb(0, 255, 0);")
self.start_button.setAutoDefault(False)
self.start_button.setDefault(False)
self.start_button.setFlat(False)
self.start_button.setObjectName("start_button")
self.start_button.clicked.connect(self.onClickStartTimer)
self.pause_button = QPushButton(set_time)
self.pause_button.setGeometry(QRect(960, 140, 150, 90))
self.pause_button.setStyleSheet("background-color: rgb(255, 255, 0);\n"
"font: 75 22pt \"MS Shell Dlg 2\";")
self.pause_button.setObjectName("pause_button")
self.pause_button.clicked.connect(self.onClickPauseTimer)
self.finish_button = QPushButton(set_time)
self.finish_button.setGeometry(QRect(960, 240, 150, 90))
self.finish_button.setStyleSheet("background-color: rgb(0, 85, 255);\n"
"font: 75 22pt \"MS Shell 2\";\n"
"color: rgb(255, 255, 255);")
self.finish_button.setObjectName("finish_button")
self.finish_button.clicked.connect(self.onClickFinish)
self.label = QLabel(set_time)
self.label.setGeometry(QRect(10, 720, 231, 40))
self.label.setFrameShape(QFrame.StyledPanel)
self.label.setFrameShadow(QFrame.Sunken)
self.label.setLineWidth(10)
self.label.setMidLineWidth(10)
self.label.setObjectName("label")
self.kill_Button = QPushButton(set_time)
self.kill_Button.setGeometry(QRect(960, 720, 150, 90))
self.kill_Button.setObjectName("kill_Button")
self.kill_Button.clicked.connect(self.onClickKill)
self.label_2 = QLabel(set_time)
self.label_2.setGeometry(QRect(260, 720, 261, 40))
self.label_2.setFrameShape(QFrame.StyledPanel)
self.label_2.setFrameShadow(QFrame.Sunken)
self.label_2.setLineWidth(10)
self.label_2.setMidLineWidth(10)
self.label_2.setObjectName("label_2")
self.lineEdit = QLineEdit(set_time)
self.lineEdit.setGeometry(QRect(260, 770, 261, 41))
self.lineEdit.setObjectName("lineEdit")
self.remaining_time = QLCDNumber(set_time)
self.remaining_time.setGeometry(QRect(0, 50, 911, 221))
self.remaining_time.setStyleSheet("background-color: rgb(0, 0, 0);\n"
"color: rgb(0, 255, 0);")
self.remaining_time.setDigitCount(8)
self.remaining_time.setSegmentStyle(QLCDNumber.Flat)
self.remaining_time.setObjectName("remaining_time")
self.label_3 = QLabel(set_time)
self.label_3.setGeometry(QRect(0, 10, 911, 40))
self.label_3.setFrameShape(QFrame.StyledPanel)
self.label_3.setFrameShadow(QFrame.Sunken)
self.label_3.setLineWidth(10)
self.label_3.setMidLineWidth(10)
self.label_3.setObjectName("label_3")
self.extra_time = QLCDNumber(set_time)
self.extra_time.setGeometry(QRect(0, 320, 911, 221))
self.extra_time.setStyleSheet("background-color: rgb(0, 0, 0);\n"
"color: rgb(255, 0, 0);")
self.extra_time.setDigitCount(8)
self.extra_time.setSegmentStyle(QLCDNumber.Flat)
self.extra_time.setObjectName("extra_time")
self.label_4 = QLabel(set_time)
self.label_4.setGeometry(QRect(0, 280, 911, 40))
self.label_4.setFrameShape(QFrame.StyledPanel)
self.label_4.setFrameShadow(QFrame.Sunken)
self.label_4.setLineWidth(10)
self.label_4.setMidLineWidth(10)
self.label_4.setObjectName("label_4")
self.set_button = QPushButton(set_time)
self.set_button.setGeometry(QRect(530, 720, 150, 90))
self.set_button.setStyleSheet("background-color: rgb(255, 170, 0);\n"
"font: 75 16pt \"MS Shell Dlg 2\";")
self.set_button.setObjectName("set_button")
self.set_button.clicked.connect(self.onClickSetTimer)
self.retranslateUi(set_time)
# QMetaObject.connectSlotsByName(set_time)
def retranslateUi(self, set_time):
_translate = QCoreApplication.translate
set_time.setWindowTitle(_translate("set_time", "Dialog"))
self.job_time.setWhatsThis(_translate("set_time", "<html><head/><body><p>Hier die Zeit für den Auftrag eintragen</p><p><br/></p></body></html>"))
self.job_time.setDisplayFormat(_translate("set_time", "HH:mm:ss"))
self.start_button.setText(_translate("set_time", "Start"))
self.pause_button.setText(_translate("set_time", "Pause"))
self.finish_button.setText(_translate("set_time", "Fertig"))
self.label.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:14pt; font-weight:600;\">Vorgabe Zeit:</span></p></body></html>"))
self.kill_Button.setText(_translate("set_time", "Beenden"))
self.label_2.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:14pt; font-weight:600;\">Auftragsnummer:</span></p><p><br/></p></body></html>"))
self.label_3.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:16pt; font-weight:600;\">Verbleibende Zeit:</span></p></body></html>"))
self.label_4.setText(_translate("set_time", "<html><head/><body><p><span style=\" font-size:16pt; font-weight:600;\">Überzogene Zeit:</span></p></body></html>"))
self.set_button.setText(_translate("set_time", "Setzen"))
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
set_time = QDialog()
ui = Ui_set_time()
ui.setupUi(set_time)
set_time.show()
sys.exit(app.exec_())
#Secondly the Control code:
# class ControlLCD(QWidget):
# def __init__(self, parent = None):
# QWidget.__init__(self, parent)
# # self.ui = StortiTimer.Ui_set_time()
# self.ui.setupUi(self)
# # def updateLCD(self):
# # self.currenttime = QTime.currentTime()
# # self.printtimer = self.currenttime.toString("hh:mm:ss")
# # self.update
# # self.ui.remaining_time.display(self.printtimer)
# if __name__ == "__main__":
# import sys
# app = QApplication(sys.argv)
# c = ControlLCD()
# c.show()
# sys.exit(app.exec_())
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