如何预防节目（）使gui不响应

import wx import re import tempfile import numpy as np import matplotlib.pyplot as plt class PlottingManager(): def plotData(self,filename, xcol, ycol): [tx,ty] = self.getData(filename,xcol,ycol) plt.plot(tx, ty) def getData(self,filename, xcol, ycol): print "Plotting : ", str(filename) fileIn = open(filename,'r') fileStr = fileIn.read() csvType = False if ',' in fileStr: csvType = True if csvType: data = np.genfromtxt(filename, unpack=True, delimiter=',') else: fileStr = re.sub('\s+', ' ', fileStr).strip() fp = tempfile.NamedTemporaryFile() fp.write(fileStr) data = np.genfromtxt(filename, unpack=True) tx = data[xcol] ty = data[ycol] return [tx,ty] def showPlot(self): #Function that calls plt.show() plt.grid(True); plt.legend(); plt.ion() plt.show() MENU_FILE_EXIT = wx.NewId() DRAG_SOURCE = wx.NewId() class PlotFileDropTarget(wx.TextDropTarget): def __init__(self, PlottingManager, obj): wx.TextDropTarget.__init__(self) self.obj = obj self.plotManager = PlottingManager def OnDropText(self, x, y, data): self.obj.WriteText("Will plot | "+ data[7:-2] + '\n\n') self.plotManager.plotData(data[7:-2],0,1) self.plotManager.showPlot() class MainWindow(wx.Frame): def __init__(self,parent,id,title): wx.Frame.__init__(self,parent, wx.ID_ANY, title, size = (750,600), style=wx.DEFAULT_FRAME_STYLE|wx.NO_FULL_REPAINT_ON_RESIZE) self.SetBackgroundColour(wx.WHITE) # Setup plotting manager self.plotManager = PlottingManager() # setup dragdrop box self.text = wx.TextCtrl(self, DRAG_SOURCE, "", pos=(0,0), size=(750,200), style = wx.TE_MULTILINE|wx.HSCROLL) self.dt1 = PlotFileDropTarget(self.plotManager,self.text) self.text.SetDropTarget(self.dt1) wx.EVT_RIGHT_DOWN(self.text, self.OnDragInit) self.Show() def CloseWindow(self, event): self.Close() def OnDragInit(self, event): tdo = wx.PyTextDataObject(self.text.GetStringSelection()) tds = wx.DropSource(self.text) tds.SetData(tdo) tds.DoDragDrop(True) class DropPlot(wx.App): def OnInit(self): frame = MainWindow(None, -1, "Drag data to plot") self.SetTopWindow(frame) return True # main loop app = DropPlot(0) app.MainLoop()

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1条回答

网友

1楼 · 发布于 2024-09-27 00:13:35

你想做的没什么意义。你知道吗

交互模式通过接管主线程运行自己的事件循环来响应鼠标事件等。这对^{}很好，它会阻塞并运行它的事件循环，直到关闭窗口为止。当然，如果你的应用程序有一个GUI，它希望运行自己的事件循环，它就不会运行。你知道吗

show(block=False)被记录为“实验性的”。而且很难看出它如何能够与每个平台上的每个GUI框架很好地集成，而不需要大量的黑客攻击。所以它有一些小故障也就不足为奇了。可能谁也帮不了你。（好吧，如果你能写一个足够详细的bug报告并将其归档到matplotlib，也许有人会想出改进的方法，你会在几个月内得到修复……）

但是，有一个非常简单的解决方法：在它自己的独立进程中运行matplotlib。你知道吗

确切地说，如何设计事物以及将流程边界放在何处取决于您的实验和代码编写，但我的第一个想法是，所有PlotManager都可以成为后台代码的简单代理。这样，您只需要在队列上pickle和发送文件名和几个数字，而不是numpy数组和plot对象之类的东西。（另外，这意味着OnDropText几乎可以立即返回，而不是阻塞GUI读取、处理和打印数组所需的时间。）

您可能会遇到的一个问题是，在python2.x中，Unix（包括macOS）上的multiprocessing通过分叉进程来工作，这会对gui造成严重破坏，而无需一些痛苦的解决方法。如果您安装了PyQt5或PySide2，显然告诉matplotlib使用其中一个可以神奇地解决这些问题，但我还没有证实这一点。如果这不起作用，另一个选择是将multiprocessing的后端口从3.4到2.x，或者（我认为）分叉版本multiprocess。然后可以使用forkserver或spawnstart方法，问题就消失了。你知道吗

matplotlib网站上有一些例子，比如this one，以及其他地方。你知道吗

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