wxPython problems with wrapping staticText

Using Mike Driscoll's code as a baseline, I hope this demonstrates my issue. There are two different versions of using "txt". Here are three things I want you to try:

  1. Run it as-is. With my StaticWrapText. It displays wrong at first, but re-size the window and it works EXACTLY as I want. There is no blank/wasted space below the text before the "button"

  2. Change these two lines (change the comments):
    txt = wx.StaticText(panel, label=text)
    #txt = StaticWrapText(panel, label=text)
    Now you will see there is no wrapping and the text is always on only one line. Definitely not what we want. This is because of "sizer.Add(txt, 0, wx.EXPAND, 5) "...so going on to Part 3...

  3. Keep the change from Part 2 and also change:
    sizer.Add(txt, 0, wx.EXPAND, 5)
    to:
    sizer.Add(txt, 1, wx.EXPAND, 5)
    So now the statictext will expand. This is CLOSE to working...BUT I don't want all that wasted space between the text and the button. If you make the window large, there is a lot of wasted space. See Part 1 after the window is re-sized to see the difference.

Code:

import wx

class StaticWrapText(wx.PyControl):
   def __init__(self, parent, id=wx.ID_ANY, label='', pos=wx.DefaultPosition,
                size=wx.DefaultSize, style=wx.NO_BORDER,
                validator=wx.DefaultValidator, name='StaticWrapText'):
      wx.PyControl.__init__(self, parent, id, pos, size, style, validator, name)
      self.statictext = wx.StaticText(self, wx.ID_ANY, label, style=style)
      self.wraplabel = label
      #self.wrap()
   def wrap(self):
      self.Freeze()
      self.statictext.SetLabel(self.wraplabel)
      self.statictext.Wrap(self.GetSize().width)
      self.Thaw()
   def DoGetBestSize(self):
      self.wrap()
      #print self.statictext.GetSize()
      self.SetSize(self.statictext.GetSize())
      return self.GetSize()

class MyForm(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Tutorial")

        # Add a panel so it looks the correct on all platforms
        panel = wx.Panel(self, wx.ID_ANY)

        text = "I'm subclasses the statictext because I want it to act exactly like a static text, but correctly wordwrap as needed. I've found several examples of it on the web, but none that worked how I wanted. The wordwrap makes it look much nicer when the user may decide to re-size the window, so I would definitely like to have it be wordwrapped. I know about the wx.lib.wordwrap, but chose to use the built in Wrap function of the statictext control instead. It basically does the same thing from what I understand."
        #txt = wx.StaticText(panel, label=text)
        txt = StaticWrapText(panel, label=text)
        wxbutton = wx.Button(panel, label='Button', size=wx.Size(120,50))
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(txt,      0, wx.EXPAND, 5)
        sizer.Add(wxbutton, 1, wx.EXPAND, 5)
        panel.SetSizer(sizer)

# Run the program
if __name__ == "__main__":
    app = wx.PySimpleApp()
    frame = MyForm().Show()
    app.MainLoop()

EDIT:

AHHH...finally! I tried using the Layout() method on virtually every level of the program, but I actually needed to use Layout() on the SIZER which is found with the method GetSizer() - or you can send SendSizeEvent() to the panel (commented in code below). Thus, the following now does EXACTLY what I want! Thanks for the help. The only other change was to store the panel with self.panel in the frame class. As a note, I had to put this statement AFTER the frame.Show() or it didn't work correctly.

Code:

import wx

class StaticWrapText(wx.PyControl):
   def __init__(self, parent, id=wx.ID_ANY, label='', pos=wx.DefaultPosition,
                size=wx.DefaultSize, style=wx.NO_BORDER,
                validator=wx.DefaultValidator, name='StaticWrapText'):
      wx.PyControl.__init__(self, parent, id, pos, size, style, validator, name)
      self.statictext = wx.StaticText(self, wx.ID_ANY, label, style=style)
      self.wraplabel = label
      #self.wrap()
   def wrap(self):
      self.Freeze()
      self.statictext.SetLabel(self.wraplabel)
      self.statictext.Wrap(self.GetSize().width)
      self.Thaw()
   def DoGetBestSize(self):
      self.wrap()
      #print self.statictext.GetSize()
      self.SetSize(self.statictext.GetSize())
      return self.GetSize()

class MyForm(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Tutorial")

        # Add a panel so it looks the correct on all platforms
        self.panel = wx.Panel(self, wx.ID_ANY)

        text = "I'm subclasses the statictext because I want it to act exactly like a static text, but correctly wordwrap as needed. I've found several examples of it on the web, but none that worked how I wanted. The wordwrap makes it look much nicer when the user may decide to re-size the window, so I would definitely like to have it be wordwrapped. I know about the wx.lib.wordwrap, but chose to use the built in Wrap function of the statictext control instead. It basically does the same thing from what I understand."
        txt = StaticWrapText(self.panel, label=text)
        wxbutton = wx.Button(self.panel, label='Button', size=wx.Size(120,50))
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(txt,      0, wx.EXPAND, 5)
        sizer.Add(wxbutton, 1, wx.EXPAND, 5)
        self.panel.SetSizer(sizer)

# Run the program
if __name__ == "__main__":
    app = wx.PySimpleApp()
    frame = MyForm()
    frame.Show()
    #frame.panel.SendSizeEvent()
    frame.panel.GetSizer().Layout()
    app.MainLoop()

As a final note, in my original program posted, the following line needs to be added just before or after frame.Show():
frame.panel.Panel2.GetSizer().Layout()

Interestingly...with that original example this can be before or after frame.Show() but the other example requires that it be after frame.Show(). I'm not sure why, but just put it after and you're safe.


I use

width = 200  # panel width
txt = wx.StaticText(panel, label=text)
txt.Wrap(width)

This works great and the next widgets are positioned correctly. You can easily do the txt.Wrap(width) dynamically.


Why are you subclassing it? Do you need wordwrap? If so, there's a module for that in wx.lib.wordwrap that you can use.

In answer the the OP's comment, check this out:

import wx

class MyForm(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Tutorial")

        # Add a panel so it looks the correct on all platforms
        panel = wx.Panel(self, wx.ID_ANY)

        text = "I'm subclasses the statictext because I want it to act exactly like a static text, but correctly wordwrap as needed. I've found several examples of it on the web, but none that worked how I wanted. The wordwrap makes it look much nicer when the user may decide to re-size the window, so I would definitely like to have it be wordwrapped. I know about the wx.lib.wordwrap, but chose to use the built in Wrap function of the statictext control instead. It basically does the same thing from what I understand."
        txt = wx.StaticText(panel, label=text)
        sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add(txt, 1, wx.EXPAND, 5)
        panel.SetSizer(sizer)

# Run the program
if __name__ == "__main__":
    app = wx.PySimpleApp()
    frame = MyForm().Show()
    app.MainLoop()

I used the OP's comment for the text. Anyway, this works fine for me on Windows XP, Python 2.5 and wxPython 2.8.10.1.

Tags:

Python

Static

Wxpython

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