Question

当我需要绘制缩放时选择面板时，我在wxpython中有此应用程序wxpython无法在正确的面板中绘制，而在同一面板中向上绘制

我不知道为什么无法在正确的面板中绘图（中部面板黄色）那是我的代码以及我拥有的：

import wx
import numpy as np
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
from matplotlib.figure import Figure
from matplotlib.widgets import RectangleSelector
import matplotlib
import matplotlib.pyplot as plt
import os
import netCDF4
from netCDF4 import Dataset



class MainFrame(wx.Frame):
    def __init__(self, parent ):
        super().__init__(parent,title= "quick",size = (2000,1000))

        left = LeftPanel(self)
        middle = MiddlePanel(self)
        right = RightPanel(self)
        sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add(left, 3, wx.EXPAND)
        sizer.Add(middle, 5, wx.EXPAND)
        sizer.Add(right, 5, wx.EXPAND)
        self.SetSizer(sizer)


# ------------ LEFT ------------

class LeftPanelTop(wx.Panel):
    def __init__(self, parent,size = (610,350)):
        super().__init__(parent)
        self.figure = Figure(figsize =(5,3))
        self.canvas = FigureCanvas(self, -1, self.figure)
        self.Size = self.canvas.Size
        self.parent = parent 



    def load_from_file(self, file_name):
        """
        Méthode effectuant l'intermédiaire pour charger le fichier selon
        son type
        """
        self.axes = self.figure.add_subplot(111)

        if file_name.endswith(".nc"):
            self._load_nc(file_name)
        else:
            self._load_txt(file_name)
        self.canvas.draw()

    def _load_nc(self, file_name):
        """ Simule le chargement et affichage à partir d'un fichier nc """
        path='D:/stage2019/air.departure.sig995.2012.nc'


        nc = Dataset('D:/stage2019/air.departure.sig995.2012.nc')
        lons = nc.variables['lon'][:]
        lats = nc.variables['lat'][:]
        air_dep = nc.variables['air_dep'][:,:,:]
        air_dep = air_dep[0,:,:]

        self.axes.pcolormesh(air_dep)


        self.RS = RectangleSelector(self.axes,self.line_select_callback,
                                       drawtype='box', useblit=False,
                                       button=[1, 3],minspanx=5, minspany=5,
                                       spancoords='pixels',
                                       interactive=True, rectprops = dict(facecolor='None',edgecolor='red',alpha=5,fill=False))


    def line_select_callback(self, eclick, erelease):
        'eclick and erelease are the press and release events'
        x1, y1 = eclick.xdata, eclick.ydata
        x2, y2 = erelease.xdata, erelease.ydata
        self.zoom_axes=[x1,x2,y1,y2]
        self.parent.zoom_panel.Update(self)    




class LeftPanelBottom(wx.Panel):
     def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER,size = (510,450) )
        self.SetBackgroundColour('snow2')
        panel_buttons = wx.Panel(self)
        panel_buttons_sizer = wx.GridSizer(1, 2, 0, 0)

        canvas_panel = LeftPanelTop(self)
        self.canvas_panel = LeftPanelTop(self)
        self.zoom_panel = MiddlePanelTop(parent=self)
        select_button = PickButton(
            panel_buttons,
            "netCDF4 files (nc)|*.nc",
            canvas_panel.load_from_file,
            label="Open file",)
        panel_buttons_sizer.Add(select_button)
        panel_buttons.SetSizer(panel_buttons_sizer)
        canvas_sizer = wx.BoxSizer(wx.HORIZONTAL)
        canvas_sizer.Add(self.canvas_panel,1,wx.EXPAND)
        canvas_sizer.Add(self.zoom_panel,1,wx.EXPAND)
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(panel_buttons)
        sizer.Add(canvas_panel)
        self.SetSizerAndFit(sizer)
        self.Show()


class PickButton(wx.Button):
    """ Bouton permettant de choisir un fichier """

    def __init__(self, parent, wildcard, func, **kwargs):
        # func est la méthode à laquelle devra être foruni le fichier sélectionné
        super().__init__(parent, **kwargs)
        self.wildcard = wildcard
        self.func = func
        self.Bind(wx.EVT_BUTTON, self.pick_file)

    def pick_file(self, evt):
        style = wx.FD_OPEN | wx.FD_FILE_MUST_EXIST | wx.FD_MULTIPLE
        with wx.FileDialog(
            self, "Pick files", wildcard=self.wildcard, style=style
        ) as fileDialog:
            if fileDialog.ShowModal() != wx.ID_CANCEL:
                chosen_file = fileDialog.GetPath()
                self.func(chosen_file)

class LeftPanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER)

        top = LeftPanelTop(self)
        bottom = LeftPanelBottom(self)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(top, 3, wx.EXPAND)
        sizer.Add(bottom, 4, wx.EXPAND)

        self.SetSizer(sizer)

# ------------ MIDDLE ------------

class MiddlePanelTop(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER,size = (300,200))
        self.SetBackgroundColour('yellow')
        self.Show()

    def Update(self,parent):
        #Load axis values of the selected rectangle
        zoom_axes=parent.zoom_axes

        #duplicate the plot from the main panel
        self.figure = Figure(figsize =(5,3))
        self.canvas = FigureCanvas(self, -1, self.figure)
        self.axes = self.figure.add_subplot(111)

        #Apply axis of drawn rectangle to the plot
        self.axes.axis(zoom_axes)

        path='D:/stage2019/air.departure.sig995.2012.nc'


        nc = Dataset('D:/stage2019/air.departure.sig995.2012.nc')
        lons = nc.variables['lon'][:]
        lats = nc.variables['lat'][:]
        air_dep = nc.variables['air_dep'][:,:,:]
        air_dep = air_dep[0,:,:]

        self.axes.pcolormesh(air_dep)
        self.canvas.draw()
        self.Refresh()



class MiddlePanelBottom(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER)
        self.SetBackgroundColour('black')
        canal=wx.Button(self,-1,"Variable",size=(140,30),pos=(100,0))
        dynamique=wx.Button(self,-1,"Dynamique",size=(140,30),pos=(240,0))
        file = wx.Button(self,-1,"File", size = (110,30),pos=(0,0))
        dynamique.SetBackgroundColour('white')
        canal.SetBackgroundColour('white')
        file.SetBackgroundColour('white')
        dynamique.Bind(wx.EVT_BUTTON, self.OnClick)
        file.Bind(wx.EVT_BUTTON, self.onOpen)
        self.load_options = "netCDF4 files (nc)|*.nc| Text files (txt) |*.txt| All files |*.*"

    def onOpen(self, event):
        wildcard = "netCDF4 files (*.nc)|*.nc"
        dialog = wx.FileDialog(self, "Open netCDF4 Files", wildcard=wildcard,
                               style=wx.FD_OPEN | wx.FD_FILE_MUST_EXIST)

        if dialog.ShowModal() == wx.ID_CANCEL:
            return
        path = dialog.GetPath()

        if os.path.exists(path):
            with open(path) as fobj:
                for line in fobj:
                    self.my_text.WriteText(line)

    def OnClick(self,event):
        dlg = wx.TextEntryDialog(self, 'Enter Dynamique of image','Dynamique de image') 

        if dlg.ShowModal() == wx.ID_OK: 
         self.text.SetValue("Dynamique:"+dlg.GetValue()) 
        dlg.Destroy()


class MiddlePanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent)

        top = MiddlePanelTop(self)
        bottom = MiddlePanelBottom(self)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(top, 2, wx.EXPAND)
        sizer.Add(bottom, 2, wx.EXPAND)
        self.SetSizer(sizer)


# ------------ RIGHT ------------

class RightPanelTop(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent)
        self.SetBackgroundColour('black')
        canal=wx.Button(self,-1,"Variable",size=(140,30),pos=(100,0))
        dynamique=wx.Button(self,-1,"Dynamique",size=(140,30),pos=(240,0))
        file = wx.Button(self,-1,"File", size = (110,30),pos=(0,0))
        dynamique.SetBackgroundColour('white')
        canal.SetBackgroundColour('white')
        file.SetBackgroundColour('white')
        dynamique.Bind(wx.EVT_BUTTON, self.OnClick)
        file.Bind(wx.EVT_BUTTON, self.onOpen)

    def onOpen(self, event):
        wildcard = "netCDF4 files (*.nc)|*.nc| HDF5 files (*.h5) |*.h5"
        dialog = wx.FileDialog(self, "Open netCDF4 Files| HDF5 files", wildcard=wildcard,
                               style=wx.FD_OPEN | wx.FD_FILE_MUST_EXIST)

        if dialog.ShowModal() == wx.ID_CANCEL:
            return

        path = dialog.GetPath()

        if os.path.exists(path):
            with open(path) as fobj:
                for line in fobj:
                    self.my_text.WriteText(line)

    def OnClick(self,event):
        dlg = wx.TextEntryDialog(self, 'Enter Dynamique of image','Dynamique de image') 

        if dlg.ShowModal() == wx.ID_OK: 
         self.text.SetValue("Dynamique:"+dlg.GetValue()) 
        dlg.Destroy()

class RightPanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER)

        top = RightPanelTop(self)
        bottom = RightPanelBottom(self)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(top, 2, wx.EXPAND)
        sizer.Add(bottom, 2, wx.EXPAND)
        self.SetSizer(sizer)

class PanelBottom(wx.Panel):
    def __init__(self,parent):
        super().__init__(parent)
        self.SetBackgroundColour('grey77')
class PanelTop(wx.Panel):
    def __init__(self,parent):
        super().__init__(parent)
        left = SubPanelLeft(self)
        right = SubPanelRight(self)
        midlle = SubPanelMiddle(self)
        sizer1 = wx.BoxSizer(wx.HORIZONTAL)
        sizer1.Add(left, 1, wx.EXPAND)
        sizer1.Add(midlle, 1, wx.EXPAND)
        sizer1.Add(right, 1, wx.EXPAND)

        self.SetSizer(sizer1)

class RightPanelBottom(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent)
        self.SetBackgroundColour('snow2')

        top = PanelTop(self)
        bottom = PanelBottom(self)
        sizer1 = wx.BoxSizer(wx.VERTICAL)
        sizer1.Add(top, 2, wx.EXPAND)
        sizer1.Add(bottom, 4, wx.EXPAND)
        self.SetSizer(sizer1)


class SubPanelLeft(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER)
        self.SetBackgroundColour('black')

class SubPanelMiddle(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER)
        self.SetBackgroundColour('black')

class SubPanelRight(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent,style = wx.SUNKEN_BORDER)
        self.SetBackgroundColour('black')




app = wx.App()
frame = MainFrame(None).Show()
app.MainLoop()

选择文件后，当我单击矩形时，在同一面板内选择缩放比例来缩放缩放比例：

Answer 1

从哪里开始？
在LeftPanelBottom中，您已定义

canvas_panel = LeftPanelTop(self)
self.canvas_panel = LeftPanelTop(self)
self.zoom_panel = MiddlePanelTop(parent=self)

这就是2个画布面板，接着是sizer的混乱，以及您将MiddlePanelTop拍击声和LeftPanelBottom放在LeftPanelTop里面的事实进入LeftPanel。

但是主要问题是关于inheritance。因为几乎所有事物本身都被定义为class，所以即使是按钮，试图找到通向MiddlePanelTop的路径也无济于事。当我迷路时，也许有人可以在这里鸣叫。
一种简单且显然非Python的方法是只使用一个global变量。
下面，我使用一个名为global的{{1}}。
N.B.我还根据需要将Zoom更改为文件

编辑：我已经在类中对您的类进行了解码，并添加了适当的path条目，这使我们可以访问它们。
结果，self面板现在也可以按照我想的那样工作。
我注意到Left和Right面板仍然存在不一致，缺少项目和固定位置的情况。

MiddlePanelBottom

wxpython无法选择好的面板进行缩放

1 个答案: