pyqt5 在別的視窗彈出進度條
阿新 • • 發佈:2019-01-03
要求:在匯入視訊的同時,利用caffe訓練好的模型提取視訊的特徵,這個過程比較費時間,因此需要進度條,不然以為程式死掉了。
在條用進度條出現的問題有:
1、進度條視窗可以彈出但是沒有進度條、label、button等
2、進度條視窗內容完整,但是進度條的進度沒有更新
3、進度條以上問題解決了,但在進度條視窗close()後,程式出現未響應現象。
問題一:
區分show, exec_區別
問題二:
Thread.msleep(100),模擬100個檔案
問題三:某個迴圈出了問題,while......
進度條對話方塊:
# -*- 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) #總程序換算為100
self.FeatProgressBar.setValue(0) #進度條初始值為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' #當前正在處理第幾個檔案 filenum = '10' #檔案總數,在label中顯示 progress = ProgressBar(fileIndex,filenum,0) progress.show() app.exec_() if __name__ == '__main__': main()
在程式中彈出對對話方塊:
self.ProgressBar = ProgressDialog.ProgressBar(self.FileIndex,self.VideoNum)
for i in range(n*step,(n+1)*step): # time.sleep(0.05) self.ProgressBar.setValue(i+1) #更新進度條的值 QThread.msleep(int(self.ratio*100)) #模擬檔案傳送,進度條可以一點點增加,而不是一下增加很多,也可以不需要 QApplication.processEvents() #實時顯示
self.ProgressBar.close() #記得關閉進度條