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58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
1 year ago
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import sys
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import time
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from PyQt5.QtWidgets import QApplication, QWidget, QDialog, QVBoxLayout, QPushButton, QLabel, QProgressBar
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from PyQt5.QtCore import Qt, QThread, pyqtSignal
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class LoadDataThread(QThread):
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progress = pyqtSignal(int)
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def run(self):
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for i in range(101):
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time.sleep(0.05) # 模拟数据加载过程
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self.progress.emit(i)
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class LoadingDialog(QDialog):
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def __init__(self):
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super().__init__()
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self.initUI()
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def initUI(self):
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vbox = QVBoxLayout()
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self.label = QLabel("加载数据中，请稍后...", self)
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self.progressBar = QProgressBar(self)
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vbox.addWidget(self.label)
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vbox.addWidget(self.progressBar)
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self.setLayout(vbox)
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self.setWindowTitle('数据查询')
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self.setWindowFlags(Qt.Window | Qt.WindowTitleHint | Qt.CustomizeWindowHint)
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self.setModal(True)
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def updateProgress(self, value):
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self.progressBar.setValue(value)
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class LoadingDataWidget(QWidget):
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def __init__(self):
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super().__init__()
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def loadData(self):
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self.loadingDialog = LoadingDialog()
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# 创建和启动数据加载线程
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self.loadThread = LoadDataThread()
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self.loadThread.progress.connect(self.loadingDialog.updateProgress)
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self.loadThread.finished.connect(self.onLoadingFinished)
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self.loadThread.start()
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self.loadingDialog.exec_()
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def onLoadingFinished(self):
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self.loadingDialog.accept()
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if __name__ == '__main__':
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app = QApplication(sys.argv)
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ex = LoadingDataWidget()
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sys.exit(app.exec_())
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