wxPython StaticText在文本更改時不會調整大小

Question

我的wxPython代碼存在一些大小問題。我有一個StaticText幫助消息，可以顯示或隱藏，並且消息需要根據用戶模式進行更改。

默認情況下會發生的情況是，包含StaticText的BoxSizer在第一次顯示StaticText時會正確地假設它的大小，但在StaticText內容更改時不會重新調整大小。

我最初的代碼看起來像這樣（爲背景，完整的代碼是在我的帖子的末尾）：

 self.msg_text = wx.StaticText(self.panel, label=self.default_msg_text, 
             style=wx.TE_CENTER | wx.EXPAND, 
             name='help msg text’) 
     self.help_msg_boxsizer.Add(self.msg_text, flag=wx.EXPAND) 
     self.help_msg_boxsizer.ShowItems(False) 

然後我嘗試手動設置大小：

 self.msg_text_size = (500, 100) 
     self.msg_text = wx.StaticText(self.panel, label=self.default_msg_text, 
             style=wx.TE_CENTER | wx.EXPAND, 
             name='help msg text', 
             size=self.msg_text_size) 
     self.help_msg_boxsizer.Add(self.msg_text, flag=wx.EXPAND) 
     self.help_msg_boxsizer.ShowItems(False) 

，然後使用：

self.msg_text.SetSize(new_size) 
    # or 
    self.help_msg_boxsizer.GetStaticBox.SetSize(new_size) 

但無論這些線似乎工作。相反，無論如何，（500,100）的初始尺寸似乎仍然可以使用。

我想設置大小提示可能有幫助，但它似乎沒有任何效果：

self.help_msg_boxsizer.SetSizeHints() 

最後，是否存在wx.EXPAND似乎沒有什麼區別。

總結：我想要做的是適當地重新大小self.msg_text到所需的最小尺寸時顯示。我怎樣才能做到這一點？

以下是完整的代碼運行我的例子：

import wx 
import sys 


class GridFrame(wx.Frame): 

    def __init__(self, frame_name="grid frame", 
       panel_name="grid panel", parent=None): 
     title = 'Edit {} data'.format(panel_name) 
     super(GridFrame, self).__init__(parent=parent, id=wx.ID_ANY, 
             name=frame_name, title=title) 
     self.remove_cols_mode = False 
     self.panel = wx.Panel(self, name=panel_name)#, size=wx.GetDisplaySize()) 
     self.grid_type = str(panel_name) 
     self.InitUI() 


    ## Initialization functions 
    def InitUI(self): 
     """ 
     initialize window 
     """ 
     self.main_sizer = wx.BoxSizer(wx.VERTICAL) 
     set1 = [] 
     ## btns set 1 
     for btn_name in ['btn1']: 
      btn = wx.Button(self.panel, label=btn_name, name=btn_name) 
      set1.append((btn)) 
     self.remove_cols_button = wx.Button(self.panel, label="Remove columns", 
              name='remove_cols_btn') 
     self.Bind(wx.EVT_BUTTON, self.on_remove_cols, self.remove_cols_button) 

     ## Help message and button 
     # button 
     self.toggle_help_btn = wx.Button(self.panel, id=-1, label="Show help", 
             name='toggle_help_btn') 
     self.Bind(wx.EVT_BUTTON, self.toggle_help, self.toggle_help_btn) 
     # message 
     self.help_msg_boxsizer = wx.StaticBoxSizer(wx.StaticBox(self.panel, -1, name='help_msg_boxsizer'), 
                wx.VERTICAL) 
     self.default_msg_text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec pulvinar, massa sit amet congue facilisis, augue nisl vehicula nulla, vel posuere ligula metus eu sapien. Nam vitae mauris nec turpis congue eleifend. Ut accumsan lorem risus, vitae scelerisque mi viverra at. In sit amet purus pretium, ultricies neque eget, ultricies enim. Aenean dignissim ornare mattis. Sed vitae consequat urna, et congue neque." 
     self.msg_text_size = (500, 100) 
     self.msg_text = wx.StaticText(self.panel, label=self.default_msg_text, 
             style=wx.TE_CENTER | wx.EXPAND, 
             name='help msg text', 
             size=self.msg_text_size) 
     self.help_msg_boxsizer.Add(self.msg_text, flag=wx.EXPAND) 
     self.help_msg_boxsizer.SetSizeHints(self) 
     self.help_msg_boxsizer.ShowItems(False) 

     ## Add content to sizers 
     self.hbox = wx.BoxSizer(wx.HORIZONTAL) 
     vbox1 = wx.StaticBoxSizer(wx.StaticBox(self.panel, -1, label='Vbox1'), wx.VERTICAL) 

     for btn in set1: 
      vbox1.Add(btn, flag=wx.ALL, border=5) 
     vbox1.Add(self.remove_cols_button) 
     self.hbox.Add(vbox1, flag=wx.ALL, border=5) 

     # add "grid" 
     self.grid_box = wx.StaticBoxSizer(wx.StaticBox(self.panel, -1, name='grid container'), wx.VERTICAL) 
     filler = wx.StaticBox(self.panel, wx.ID_ANY, "FillerStaticBox", size=(500, 200)) 
     self.grid_box.Add(filler, 1, flag=wx.ALL|wx.EXPAND, border=5) 
     # final layout, set size 
     self.main_sizer.Add(self.hbox, flag=wx.ALL|wx.ALIGN_CENTER|wx.SHAPED, border=20) 
     self.main_sizer.AddSpacer(20) 
     self.main_sizer.Add(self.toggle_help_btn, .5, 
          flag=wx.BOTTOM|wx.ALIGN_CENTRE|wx.SHAPED, 
          border=5) 
     self.main_sizer.Add(self.help_msg_boxsizer, .5, 
          flag=wx.BOTTOM|wx.ALIGN_CENTRE|wx.SHAPED, 
          border=10) 
     self.main_sizer.AddSpacer(10) 

     self.main_sizer.Add(self.grid_box, 2, flag=wx.ALL|wx.ALIGN_CENTER|wx.EXPAND, border=10) 
     self.panel.SetSizer(self.main_sizer) 
     self.panel_sizer = wx.BoxSizer(wx.VERTICAL) 
     self.panel_sizer.Add(self.panel, 1) 
     self.SetSizer(self.panel_sizer) 
     self.panel_sizer.Fit(self) 
     self.Centre() 
     self.Show() 


    def do_fit(self, event, min_size=None): 
     """ 
     Re-fit the window to the size of the content. 
     """ 
     if event: 
      event.Skip() 
     self.panel_sizer.Fit(self) 
     self.Centre() 
     return 

    def toggle_help(self, event, mode=None): 
     """ 
     Show/hide help message on help button click. 
     """ 
     # if mode == 'open', show no matter what. 
     # if mode == 'close', close. otherwise, change state 
     btn = self.toggle_help_btn 
     shown = self.help_msg_boxsizer.GetStaticBox().IsShown() 

     # if mode is specified, do that mode 
     if mode == 'open': 
      self.msg_text.SetSize(self.msg_text_size) 
      self.help_msg_boxsizer.GetStaticBox().SetSize(self.msg_text_size) 
      #self.help_msg_boxsizer.Fit(self.msg_text) 
      self.help_msg_boxsizer.ShowItems(True) 
      btn.SetLabel('Hide help') 
     elif mode == 'close': 
      self.help_msg_boxsizer.ShowItems(False) 
      btn.SetLabel('Show help') 
     # otherwise, simply toggle states 
     else: 
      if shown: 
       self.help_msg_boxsizer.ShowItems(False) 
       btn.SetLabel('Show help') 
      else: 
       self.msg_text.SetSize(self.msg_text_size) 
       self.help_msg_boxsizer.GetStaticBox().SetSize(self.msg_text_size) 
       #self.help_msg_boxsizer.Fit(self.msg_text) 
       self.help_msg_boxsizer.ShowItems(True) 
       btn.SetLabel('Hide help') 

     self.do_fit(None) 


    ## Events 

    def on_remove_cols(self, event): 
     """ 
     enter 'remove columns' mode 
     """ 
     self.remove_cols_mode = True 
     self.remove_cols_button.SetLabel("end delete column mode") 
     self.remove_cols_button.SetSize(self.remove_cols_button.GetBestSize()) 
     # change button to exit the delete columns mode 
     self.Unbind(wx.EVT_BUTTON, self.remove_cols_button) 
     self.Bind(wx.EVT_BUTTON, self.exit_col_remove_mode, self.remove_cols_button) 
     # then make some visual changes 
     self.msg_text_size = (50, 50) 
     self.msg_text.SetLabel("Remove grid columns: click on a column header to delete it.Required headers for {}s may not be deleted.".format(self.grid_type)) 
     self.toggle_help(event=None, mode='open') 
     self.grid_box.GetStaticBox().SetWindowStyle(wx.DOUBLE_BORDER) 

    def exit_col_remove_mode(self, event): 
     """ 
     go back from 'remove cols' mode to normal 
     """ 
     # close help messge 
     self.toggle_help(event=None, mode='close') 
     # update mode 
     self.remove_cols_mode = False 
     self.grid_box.GetStaticBox().SetWindowStyle(wx.DEFAULT) 
     self.msg_text.SetLabel(self.default_msg_text) 
     self.msg_text_size = (500, 150) 
     self.help_msg_boxsizer.Fit(self.help_msg_boxsizer.GetStaticBox()) 
     self.toggle_help(None, mode='close') 
     # re-bind self.remove_cols_button 
     self.Bind(wx.EVT_BUTTON, self.on_remove_cols, self.remove_cols_button) 
     self.remove_cols_button.SetLabel("Remove columns") 
     self.do_fit(None) 


if __name__ == "__main__": 
    app = wx.App() 
    frame = GridFrame() 
    if '-i' in sys.argv: 
     import wx.lib.inspection 
     wx.lib.inspection.InspectionTool().Show() 
    app.MainLoop() 

Answer 1

你不應該需要任何的是，簡單地對父母打電話佈局，或者分級機向上的層次，當文本是一個改變應該足夠了。

此外，我看到您將help_msg_boxsizer添加到main_sizer時，會設置wx.SHAPED標誌。這會告訴父級sizer保持與物品第一次添加到sizer時相同的長寬比，這可能會使sizer和靜態文本的大小大於0像素高。

最後，你在幾個地方使用了0.5的比例值。該參數是一個整數，所以它只會被截斷爲零，並不會做你可能希望它會。比例工作的方式是，sizer使用的比例值的總和用於計算自由空間的分配方式。例如，如果一個box sizer具有比例爲1,1,2的項目，則前兩個分別獲得可用空間的25％，第三個獲得50％。