要求:在导入视频的同时,利用caffe训练好的模型提取视频的特征,这个过程比较费时间,因此需要进度条,不然以为程序死掉了。
在条用进度条出现的问题有:
1、进度条窗口可以弹出但是没有进度条、label、button等
2、进度条窗口内容完整,但是进度条的进度没有更新
3、进度条以上问题解决了,但在进度条窗口close()后,程序出现未响应现象。
问题一:
区分show, exec_区别
问题二:
thread.msleep(100),模拟100个文件
问题三:某个循环出了问题,while......
进度条对话框:
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# -*- coding: utf-8 -*- ##set progressbar from pyqt5.qtwidgets import qapplication,qwidget,qdialog,qlabel,qlineedit,qprogressbar,\ qpushbutton,qvboxlayout,qhboxlayout,qgridlayout,qdialogbuttonbox from pyqt5.qtcore import qt, qbasictimer, qthread import sys class progressbar(qdialog): def __init__( self , fileindex,filenum,parent = none): super (progressbar, self ).__init__(parent) self .resize( 350 , 100 ) self .setwindowtitle( self .tr( "processing progress" )) self .tiplabel = qlabel( self .tr( "processing:" + " " + str (fileindex) + "/" + str (filenum))) self .featlabel = qlabel( self .tr( "extract feature:" )) self .featprogressbar = qprogressbar( self ) self .featprogressbar.setminimum( 0 ) self .featprogressbar.setmaximum( 100 ) #总进程换算为100 |
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self .featprogressbar.setvalue( 0 ) #进度条初始值为0 tiplayout = qhboxlayout() tiplayout.addwidget( self .tiplabel) featlayout = qhboxlayout() featlayout.addwidget( self .featlabel) featlayout.addwidget( self .featprogressbar) # self.startbutton = qpushbutton('start',self) self .cancelbutton = qpushbutton( 'cancel' , self ) # self.cancelbutton.setfocuspolicy(qt.nofocus) buttonlayout = qhboxlayout() buttonlayout.addstretch( 1 ) buttonlayout.addwidget( self .cancelbutton) # buttonlayout.addstretch(1) # buttonlayout.addwidget(self.startbutton) layout = qvboxlayout() # layout = qgridlayout() layout.addlayout(featlayout) layout.addlayout(tiplayout) layout.addlayout(buttonlayout) self .setlayout(layout) self .show() # self.startbutton.clicked.connect(self.setvalue) self .cancelbutton.clicked.connect( self .oncancel) # self.startbutton.clicked.connect(self.onstart) # self.timer = qbasictimer() # self.step = 0 def setvalue( self ,value): self .featprogressbar.setvalue(value) def oncancel( self ,event): self .close() def main(): app = qapplication(sys.argv) fileindex = '3' #当前正在处理第几个文件 filenum = '10' #文件总数,在label中显示 progress = progressbar(fileindex,filenum, 0 ) progress.show() app.exec_() if __name__ = = '__main__' : main() |
在程序中弹出对对话框:
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self .progressbar = progressdialog.progressbar( self .fileindex, self .videonum) |
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for i in range (n * step,(n + 1 ) * step): # time.sleep(0.05) self .progressbar.setvalue(i + 1 ) #更新进度条的值 qthread.msleep( int ( self .ratio * 100 )) #模拟文件传送,进度条可以一点点增加,而不是一下增加很多,也可以不需要 qapplication.processevents() #实时显示 |
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self .progressbar.close() #记得关闭进度条 |
以上这篇pyqt5 实现在别的窗口弹出进度条就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/summermaoz/article/details/6058084