wxPython 隐藏和显示面板

Question

wxPython 隐藏和显示面板

3

我正在创建一个需要在启动时登录的Python应用程序。我希望有一个主面板来容纳我的登录面板，当成功登录后，登录面板将隐藏，主wx.Notebook将显示。以下代码可以工作，但如果在登录面板中重新调整应用程序的大小，在成功登录并进入主wx.Notebook后，wx.Notebook不会适应屏幕的大小。如果我在主wx.Notebook中再次调整大小，主wx.Notebook将适应窗口。如何让主wx.Notebook自动调整大小以适应窗口？

Main.py

import wx
import os
from titlePanel import titlePanel
from OneLblOneCB_HorzBoxSizer_Panel import OneLblOneCB_HorzBoxSizer_Panel
from OneLblOneMultiTxt_HorzBoxSizer_Panel import OneLblOneMultiTxt_HorzBoxSizer_Panel
from OneLblOneSingleTxt_HorzBoxSizer_Panel import OneLblOneSingleTxt_HorzBoxSizer_Panel
from OneLblTxtFile_HorzBoxSizer_Panel import OneLblTxtFile_HorzBoxSizer_Panel
from OneBtn_HorzBoxSizer_Panel import OneBtn_HorzBoxSizer_Panel
from LoginPanel import LoginPanel
from ProjectsPanel import ProjectsPanel
from EvDB import EvDB

class MyFrame(wx.Frame):
    def __init__(self, parent, ID, title):
        wx.Frame.__init__(self, parent, ID, title=title, size=(650,725))

        # Create Database Tables
        self.db = EvDB(self)
        self.db.createTbls()

        # Setting up the menu.
        filemenu= wx.Menu()

        ID_LOGIN = wx.NewId()
        ID_LOGOUT = wx.NewId()

        # wx.ID_ABOUT and wx.ID_EXIT are standard IDs provided by wxWidgets.
        menuOpen  = filemenu.Append(wx.ID_OPEN, "&Open"," Open and existing file")
        menuAbout  = filemenu.Append(wx.ID_ABOUT, "&About"," Information about this program")
        filemenu.AppendSeparator()
        menuLogin = filemenu.Append(ID_LOGIN, 'Login')
        menuLogout = filemenu.Append(ID_LOGOUT, 'Logout')
        filemenu.AppendSeparator()
        menuExit = filemenu.Append(wx.ID_EXIT,"E&xit"," Terminate the program")

        # Creating the menubar.
        menuBar = wx.MenuBar()
        menuBar.Append(filemenu,"&File") # Adding the "filemenu" to the MenuBar
        self.SetMenuBar(menuBar)  # Adding the MenuBar to the Frame content.

        # Set events.
        self.Bind(wx.EVT_MENU, self.OnOpen, menuOpen )
        self.Bind(wx.EVT_MENU, self.OnAbout, menuAbout )
        self.Bind(wx.EVT_MENU, self.OnLogin, menuLogin )
        self.Bind(wx.EVT_MENU, self.OnLogout, menuLogout )
        self.Bind(wx.EVT_MENU, self.OnExit, menuExit )

        main = wx.Panel(self)
        self.mainLogin = LoginPanel(main,-1,addSpacers=1)
        self.mainLogin.Show()

        # Create a notebook on the panel
        self.nb = wx.Notebook(main)
        self.nb.Hide()

        # create the page windows as children of the notebook
        flowchartPg = wx.Panel(self.nb)
        entryPg = wx.ScrolledWindow(self.nb, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, style=wx.VSCROLL)
        entryPg.SetScrollRate( 5, 5 )
        projectsPg = ProjectsPanel(self.nb, -1)

        # add the pages to the notebook with the label to show on the tab
        self.nb.AddPage(projectsPg, "Projects")
        self.nb.AddPage(entryPg, "Entry")
        self.nb.AddPage(flowchartPg, "Flowchart")

        self.entTitle = titlePanel(entryPg, -1)
        self.entDescr = OneLblOneMultiTxt_HorzBoxSizer_Panel(entryPg,-1,
                       name="entDescr", lbl="Description")
        self.srcTypeList = ['None','Website', 'Youtube', 'PDF', 'Book']
        self.entSourceType = OneLblOneCB_HorzBoxSizer_Panel(entryPg,-1,
                   name="entSourceType", lbl="Source Type: ", cbList=self.srcTypeList, startVal='None')
        self.entSource = OneLblTxtFile_HorzBoxSizer_Panel(entryPg,-1,
                       name="entSource", lbl="Source: ")
        self.entSource.singleTxt.SetEditable(False)
        self.entSource._filename.Disable()
        self.entAuthor = OneLblOneSingleTxt_HorzBoxSizer_Panel(entryPg,-1,
                       name="entAuthor", lbl="Author: ", addSpacers=0)
        self.entAuthorCre = OneLblOneMultiTxt_HorzBoxSizer_Panel(entryPg,-1,
                       name="entAuthorCre", lbl="Author's Credentials: ")
        self.asPrjList = ['None','Project1', 'Project2', 'Project3', 'Project4']
        self.entAsProject = OneLblOneCB_HorzBoxSizer_Panel(entryPg,-1,
                   name="asProject", lbl="Assign to Project: ", cbList=self.asPrjList, startVal='None')
        self.saveOrEditList = ['New','Ev1', 'Ev2', 'Ev3', 'Ev4']
        self.entSaveOrEdit = OneLblOneCB_HorzBoxSizer_Panel(entryPg,-1,
                   name="saveOrEdit", lbl="New or Edit: ", cbList=self.saveOrEditList, startVal='New')
        self.entRemarks = OneLblOneMultiTxt_HorzBoxSizer_Panel(entryPg,-1,
                       name="sourceRemarks", lbl="Evidence Remarks: ")
        self.entRemarks.multiTxt.SetEditable(False)
        self.entAddBtn = OneBtn_HorzBoxSizer_Panel(entryPg, -1, name="entAddBtn", btn="Add")
        self.entSaveBtn = OneBtn_HorzBoxSizer_Panel(entryPg, -1, name="entSaveBtn", btn="Save")
        #self.loginTest = LoginPanel(entryPg, -1,addSpacers=1)
        self.entSaveBtn.button.Hide()

        # Bindings
        self.Bind(wx.EVT_COMBOBOX, self.SourceTypeEvtComboBox, self.entSourceType.cb)
        self.Bind(wx.EVT_COMBOBOX, self.AsProjectEvtComboBox, self.entAsProject.cb)
        self.Bind(wx.EVT_COMBOBOX, self.SaveOrEditEvtComboBox, self.entSaveOrEdit.cb)
        self.Bind(wx.EVT_BUTTON, self.EvtAddBtn, self.entAddBtn.button)
        self.Bind(wx.EVT_BUTTON, self.EvtSaveBtn, self.entSaveBtn.button)
        self.Bind(wx.EVT_BUTTON, self.EvtLoginBtn, self.mainLogin.loginBtns.LoginBtn)
        self.Bind(wx.EVT_BUTTON, self.EvtLogoutBtn, self.mainLogin.loginBtns.LogoutBtn)


        # Creating Sizers
        mainSizer = wx.BoxSizer(wx.VERTICAL)
        entryPgBox = wx.BoxSizer(wx.VERTICAL)

        # Adding Panels to BoxSizer entry panel sizer
        mainSizer.AddSpacer(10)
        mainSizer.Add(self.nb, 1, wx.ALL|wx.EXPAND)
        mainSizer.Add(self.mainLogin, 1, wx.ALL|wx.EXPAND)

        entryPgBox.AddSpacer(20)
        entryPgBox.Add(self.entAsProject, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entSaveOrEdit, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entTitle, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entDescr, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entSourceType, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entSource, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entAuthor, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entAuthorCre, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entRemarks, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)
        entryPgBox.Add(self.entAddBtn, 0, wx.EXPAND)
        entryPgBox.Add(self.entSaveBtn, 0, wx.EXPAND)
        entryPgBox.AddSpacer(10)


        # Setting Layouts
        entryPg.SetAutoLayout(True)
        entryPg.SetSizer(entryPgBox)
        entryPgBox.Fit(entryPg)


        main.SetAutoLayout(True)
        main.SetSizer(mainSizer)
        mainSizer.Fit(main)
        self.Layout()
        self.Show()

    def OnLogin(self,e):
        self.nb.Hide()
        self.mainLogin.Show()
        self.Layout()
        self.mainLogin.Layout()

    def OnLogout(self,e):
        self.mainLogin.Show()
        self.nb.Hide()
        self.Layout()
        self.mainLogin.Layout()

    def EvtLoginBtn(self,e):
        self.nb.Show()
        self.mainLogin.Hide()
        self.Layout()
        self.nb.Layout()

LoginPanel.py

class LoginPanel(wx.Panel):
    def __init__(self, parent, ID, addSpacers):
        wx.Panel.__init__(self, parent, ID)

        sizer = wx.BoxSizer(wx.VERTICAL)

        self.userNamePnl = OneLblOneSingleTxt_HorzBoxSizer_Panel(self,-1,
                       name="loginUser", lbl="Username: ", addSpacers=1)
        self.passwordPnl = OneLblOneSingleTxt_HorzBoxSizer_Panel(self,-1,
                       name="loginPass", lbl="Password: ", addSpacers=1)
        self.loginBtns = LoginBtnsPanel(self,-1)


        if addSpacers == 1:
            sizer.AddStretchSpacer()

        sizer.Add(self.userNamePnl,0,wx.EXPAND)
        sizer.AddSpacer(10)
        sizer.Add(self.passwordPnl,0,wx.EXPAND)
        sizer.AddSpacer(10)
        sizer.Add(self.loginBtns,0,wx.EXPAND)


        if addSpacers == 1:
            sizer.AddStretchSpacer()

        self.SetAutoLayout(True)
        self.SetSizer(sizer)
        sizer.Fit(self)

- user908759

不关心你的问题...我注意到在def MainLogin()和def MainLogout()中，self.nb被隐藏了，而self.MainLogin被显示了。这样是有意为之吗？ - user2963623

2个回答

1

调用Frame和Panel的Layout()方法，像这样：

def EvtLoginBtn(self,e):
    self.nb.Show()
    self.mainLogin.Hide()
    self.Layout()
    self.nb.Layout()

最后一个调用可能是不必要的。即使没有它，也可以检查程序。 Layout() 方法重新绘制帧或面板或任何小部件，这是它所属的方法。更新你的代码显然很大，并且有其他几个部分我不知道。无论如何，以下是我根据您提供的代码想出来的一些内容，以展示您如何做到这一点。希望能帮到您：

Main.py

import wx
from LoginPanel import LoginPanel

class MyFrame ( wx.Frame ):

    def __init__( self, parent ):
        wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = u"Something something", pos = wx.DefaultPosition, size = wx.Size( 300,300 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )

        self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )

        BoxSizer0 = wx.BoxSizer( wx.VERTICAL )

        # Add login panel
        self.login_panel = LoginPanel(self)
        BoxSizer0.Add(self.login_panel, 1, wx.EXPAND | wx.ALL, 0)

        # Add notebook panel and its pages
        self.nb = wx.Notebook( self, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, 0 )
        self.nb_subpanel1 = wx.Panel( self.nb, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
        self.nb.AddPage( self.nb_subpanel1, u"something", False )
        self.nb_subpanel2 = wx.Panel( self.nb, wx.ID_ANY, wx.DefaultPosition, wx.DefaultSize, wx.TAB_TRAVERSAL )
        self.nb.AddPage( self.nb_subpanel2, u"something else", False )

        BoxSizer0.Add( self.nb, 1, wx.EXPAND |wx.ALL, 0 )

        # Adds a logout button
        self.logout_button = wx.Button( self, wx.ID_ANY, u"Logout", wx.DefaultPosition, wx.DefaultSize, 0 )
        BoxSizer0.Add( self.logout_button, 0, wx.ALIGN_CENTER|wx.ALL, 5 )

        # Hide nb and logout button
        self.nb.Hide()
        self.logout_button.Hide()


        self.SetSizer( BoxSizer0 )
        self.Layout()

        self.Centre( wx.BOTH )
        self.Show()

        # Connect Events
        self.logout_button.Bind( wx.EVT_BUTTON, self.on_logout )

    # Virtual event handlers, override them in your derived class
    def on_logout( self, event ):
        self.nb.Hide()
        self.logout_button.Hide()
        self.login_panel.Show()
        self.Layout()

if __name__ == "__main__":
    app = wx.App()
    MyFrame(None)
    app.MainLoop()

LoginPanel.py

import wx

class LoginPanel ( wx.Panel ):

    def __init__( self, parent ):
        wx.Panel.__init__ ( self, parent, id = wx.ID_ANY, pos = wx.DefaultPosition, size = wx.Size( 300,300 ), style = wx.TAB_TRAVERSAL )

        BoxSizer01 = wx.BoxSizer( wx.VERTICAL )

        self.login_button = wx.Button( self, wx.ID_ANY, u"Login", wx.DefaultPosition, wx.DefaultSize, 0 )
        self.login_button.SetDefault() 
        BoxSizer01.Add( self.login_button, 0, wx.ALIGN_CENTER|wx.ALL, 5 )


        self.SetSizer( BoxSizer01 )
        self.Layout()

        # Connect Events
        self.login_button.Bind( wx.EVT_BUTTON, self.on_login )


    # Virtual event handlers, overide them in your derived class
    def on_login( self, event ):
        self.Hide()
        self.Parent.nb.Show()
        self.Parent.logout_button.Show()
        self.Parent.Layout()

- user2963623

谢谢您的回复，但添加Layout()并没有起作用。 - user908759

您能提供整个代码或一个简单的形式吗？ - user2963623

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- user908759 · Accepted Answer

明白了！我之前一直试图用Layout()重新绘制框架，但是我需要用Layout()重新绘制BoxSizer。我在登录按钮中添加了以下代码：

def EvtLoginBtn(self,e):
    self.nb.Show()
    self.mainLogin.Hide()
    self.mainSizer.Layout()