pyqt5 button控件上,如何拖拽一个文件上去?
PyQt5 简单的控件拖和拉学习(drag and drop) - 简书
不需要重新创建一个class
python - PyQt Drop Event without subclassing? - Stack Overflow
最终的code 如下:
from PyQt5 import QtCore, QtGui from PyQt5.QtWidgets import * from PyQt5.QtCore import QTextCodec from PyQt5 import uic import pyqtgraph as pg import os import scipy.io as scio SOFTWAREVERSION = r'Trace.mat Visualization V0.0.1' SOFTWARECOPYRIGHT = r' 2021-2023 ' SOFTWAREAUTHOR = r'Fen' SOFTWAREEMAIL = r'@163.com' WELCOMEMESSAGE = 'Welcom to use ' + SOFTWAREVERSION + "!" specialMimeType="application/x-qt-windows-mime;value=\"FileNameW\"" #这个软件最大的作用是,可以标注index。 class TVWindow(QMainWindow): plotList = [] lastChoosePath = r'D:\Data\SanChaShenJingTong\fzh-TN-CalciumSignal\2021-04-04--0030-P1\CellVideo1' def __init__(self): super(TVWindow, self).__init__()#调用父类的构造函数 uic.loadUi(r'../GUI/TraceVisualization.ui', self) self.btnOpenTraceMat.clicked.connect(self.slotOpenTraceMat) self.btnOpenTraceMat.setAcceptDrops(True) self.btnOpenTraceMat.installEventFilter(self) self.btnCloseAll.clicked.connect(self.slotCloseAll) self.setWindowTitle(SOFTWAREVERSION) self.statusBar().showMessage(WELCOMEMESSAGE) print(WELCOMEMESSAGE) def slotOpenTraceMat(self, tracefilePath = None): if tracefilePath is None: traceMatPath, filetype = QFileDialog.getOpenFileName(self, "载入Neurons", self.lastChoosePath, "Trace(*.mat)") # 设置文件扩展名过滤,注意用双分号间隔 else: traceMatPath = tracefilePath if traceMatPath == '': self.statusBar().showMessage("取消") return self.lastChoosePath = traceMatPath mat = scio.loadmat(traceMatPath) NeuronSig = mat['dff'] if NeuronSig.shape[0] > 20: curveNum = 20 figNum = NeuronSig.shape[0] // curveNum - 1 else: figNum = 1 curveNum = NeuronSig.shape[0] for i in range(figNum): textLabel = range(i*curveNum,(i+1)*curveNum) tmpData = NeuronSig[i*curveNum:(i+1)*curveNum] plotName = "Gourp"+str(i) position = [(i%7)*500,(i//7)*1000] pen = (i*3, 20*1.3) #创建颜色的方法请参考: https://pyqtgraph.readthedocs.io/en/latest/functions.html#pyqtgraph.intColor self.createPlotWindowAndPlot(tmpData, plotName, position, pen,textLabel) self.statusBar().showMessage("Load trace.mat finished!") print("load trace.mat finished") def createPlotWindowAndPlot(self, NeuronSig, plotName, position, pen,textLabel): # 在原始界面上刷新有点卡。所以再来一个plot界面,看看。 # 结论是,依然很卡 plot = pg.plot(title = plotName) self.plotList.append(plot.parent()) plot.resize(500,1000) #对plot窗口的大小进行设置 plot.parent().move(position[0], position[1]) #对plot窗口在显示器上的相对位置进行设置 # plot.setWindowTitle('MultiPlotTest') plot.setLabel('bottom', plotName) nPlots = NeuronSig.shape[0] for idx in range(nPlots): curve = pg.PlotCurveItem(pen=pen) curve.setData(NeuronSig[idx,:]) plot.addItem(curve) curve.setPos(0,idx*3) label = textLabel[idx] text = pg.TextItem(text=str(label)) text.setPos(0, idx*3) plot.addItem(text) def eventFilter(self, object, event): if (object is self.btnOpenTraceMat): if (event.type() == QtCore.QEvent.DragEnter): if event.mimeData().hasUrls(): url = event.mimeData().urls()[0] path = url.toString() if path.endswith(".mat"): self.lastChoosePath = path.replace('file:///', '') event.accept() print("accept") else: event.ignore() print("ignore") else: event.ignore() print("ignore") if (event.type() == QtCore.QEvent.Drop): print("droped") self.slotOpenTraceMat(tracefilePath=self.lastChoosePath) pass return False # lets the event continue to the edit return False def slotCloseAll(self): for p in self.plotList: p.close() self.plotList = [] self.statusBar().showMessage("Close all plot finished!") print("Close all plot finished!") if __name__ == '__main__': import sys app = QApplication(sys.argv) ui = TVWindow() ui.show() if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'): QtGui.QApplication.instance().exec_()