wxpython无法选择好的面板进行缩放 [英] wxpython can't choose the good panel for zoom

问题描述

当我需要绘制缩放时选择面板时，我在 wxpython 中有这个应用程序 wxpython 无法在正确的面板中绘制在同一面板中绘制

I have this app in wxpython when I select the panel when I need to plot zoom the wxpython can't plot in the correct panel the plot up in the same panel

推荐答案

从哪里开始?
在 LeftPanelBottom 中，您已定义

Where to start?
In LeftPanelBottom you have defined

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

所以这是 2 个画布面板，然后是 sizer 混乱以及您将 MiddlePanelTop 拍打在 LeftPanelBottom 内的事实以及 LeftPanelTop 已经加载到 LeftPanel 中.

So that is 2 canvas panels, followed by sizer confusion and the fact that you placed MiddlePanelTop slap bang inside of LeftPanelBottom along with LeftPanelTop which has already been loaded into LeftPanel.

但是主要问题是关于继承力.因为几乎所有东西都被定义为 class 本身，即使是按钮，试图找到通向 MiddlePanelTop 的路径让我无法理解.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 global 变量.
下面，我使用了一个名为 Zoom 的 global.
注意我还在适当的地方将 path 更改为文件

But the main issue is about inheritance. Because just about everything is defined as a class in its own right, even buttons, trying to find a path through to the MiddlePanelTop escapes me. Perhaps someone else can chime in here, as I got lost.
The simple and apparently un-pythonic way is to just use a global variable.
Below, I use a global called Zoom.
N.B. I have also changed the path to the file, where appropriate

我已经在类中对您的类进行了解码，并添加了相应的 self 条目，这使我们可以访问它们.
因此，Left 面板现在也按照您的预期运行.
我注意到 Right 和 MiddlePanelBottom 面板仍然存在不一致、缺少项目和固定位置.

I have de-coded your classes within classes and added in the appropriate self entries, which allows us to access them.
As a result the Left panel now functions as I suppose you intended as well.
I note that the Right and MiddlePanelBottom panels still have inconsistencies, missing items and fixed positioning.

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
#Zoom = None


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

        self.left = LeftPanel(self)
        self.middle = MiddlePanel(self)
        self.right = RightPanel(self)
        sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add(self.left, 1, wx.EXPAND)
        sizer.Add(self.middle, 1, wx.EXPAND)
        sizer.Add(self.right, 1, wx.EXPAND)
        self.SetSizer(sizer)


# ------------ LEFT ------------
class LeftPanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent, name="Left", style = wx.SUNKEN_BORDER)
        self.top = LeftPanelTop(self)
        self.bottom = LeftPanelBottom(self)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.top, 1, wx.EXPAND)
        sizer.Add(self.bottom, 1, wx.EXPAND)

        self.SetSizer(sizer)

class LeftPanelTop(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent, name="LeftTop", size = (510,350))
        self.figure = Figure(figsize =(5,3))
        self.canvas = FigureCanvas(self, -1, self.figure)
        self.Size = self.canvas.Size

    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('./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]

    # Zoom is a global variable set in MiddlePanelTop __init__
        #Zoom.Update(self.zoom_axes)
        self.GrandParent.middle.top.Update(self.zoom_axes)



class LeftPanelBottom(wx.Panel):
     def __init__(self, parent):
        super().__init__(parent, name="LeftBottom", style = wx.SUNKEN_BORDER,size = (510,350) )
        self.SetBackgroundColour('snow2')
        panel_buttons = wx.Panel(self)
        panel_buttons_sizer = wx.GridSizer(1, 2, 0, 0)

        self.canvas_panel = wx.Panel()
        #self.canvas_panel = LeftPanelTop(self)
        #self.zoom_panel = MiddlePanelTop(parent=self)
        select_button = PickButton(
            panel_buttons,
            "netCDF4 files (nc)|*.nc",
            #self.canvas_panel.load_from_file,
            self.Parent.top.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(self.canvas_panel)
        self.SetSizer(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)

# ------------ MIDDLE ------------
class MiddlePanel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent, name="Middle")
        self.top = MiddlePanelTop(self)
        self.bottom = MiddlePanelBottom(self)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.top, 1, wx.EXPAND, 5)
        sizer.Add(self.bottom, 1, wx.EXPAND, 5)
        self.SetSizer(sizer)

class MiddlePanelTop(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent, name="MiddleTop", style = wx.SUNKEN_BORDER,size = (300,200))

    def Update(self,zoom_axes):
        #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='./air.departure.sig995.2012.nc'


        nc = Dataset('./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, name="MiddleBottom", 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()



# ------------ 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, 1, wx.EXPAND)
        sizer.Add(bottom, 1, 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, 1, wx.EXPAND)
        sizer1.Add(bottom, 1, 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()

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