wxPython 包装 staticText 的问题
下面是简化版的代码（为了减小体积，去掉了空格、注释等内容，但程序的整体格式大致保持不变）。
当我运行这个脚本时，静态文本会正确换行，但面板里的其他项目却没有往下移动（它们的表现就像静态文本只有一行，因此看不到所有内容）。
如果我手动调整窗口/框架的大小，即使只是微调一下，所有内容就会正确显示，按照我想要的样子展示出来。
为什么一开始不正确显示呢？我尝试了各种组合，比如 GetParent().Refresh()、Update()、GetTopLevelParent().Update() 和 Refresh()。我也尝试了我能想到的所有方法，但就是无法在不手动调整框架/窗口大小的情况下让它正确显示。一旦调整了大小，它就会完全按照我想要的方式工作。
信息：
- 操作系统：Windows XP
- Python版本：2.5.2
- wxPython版本：2.8.11.0 (msw-unicode)
我的代码：
#! /usr/bin/python
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 TestPanel(wx.Panel):
def __init__(self, *args, **kwargs):
# Init the base class
wx.Panel.__init__(self, *args, **kwargs)
self.createControls()
def createControls(self):
# --- Panel2 -------------------------------------------------------------
self.Panel2 = wx.Panel(self, -1)
msg1 = 'Below is a List of Files to be Processed'
staticBox = wx.StaticBox(self.Panel2, label=msg1)
Panel2_box1_v1 = wx.StaticBoxSizer(staticBox, wx.VERTICAL)
Panel2_box2_h1 = wx.BoxSizer(wx.HORIZONTAL)
Panel2_box3_v1 = wx.BoxSizer(wx.VERTICAL)
self.wxL_Inputs = wx.ListBox(self.Panel2, wx.ID_ANY, style=wx.LB_EXTENDED)
sz = dict(size=(120,-1))
wxB_AddFile = wx.Button(self.Panel2, label='Add File', **sz)
wxB_DeleteFile = wx.Button(self.Panel2, label='Delete Selected', **sz)
wxB_ClearFiles = wx.Button(self.Panel2, label='Clear All', **sz)
Panel2_box3_v1.Add(wxB_AddFile, 0, wx.TOP, 0)
Panel2_box3_v1.Add(wxB_DeleteFile, 0, wx.TOP, 0)
Panel2_box3_v1.Add(wxB_ClearFiles, 0, wx.TOP, 0)
Panel2_box2_h1.Add(self.wxL_Inputs, 1, wx.ALL|wx.EXPAND, 2)
Panel2_box2_h1.Add(Panel2_box3_v1, 0, wx.ALL|wx.EXPAND, 2)
msg = 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
msg += 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
msg += 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
msg += 'This is a long line of text used to test the autowrapping '
msg += 'static text message. '
staticMsg = StaticWrapText(self.Panel2, label=msg)
Panel2_box1_v1.Add(staticMsg, 0, wx.ALL|wx.EXPAND, 2)
Panel2_box1_v1.Add(Panel2_box2_h1, 1, wx.ALL|wx.EXPAND, 0)
self.Panel2.SetSizer(Panel2_box1_v1)
# --- Combine Everything -------------------------------------------------
final_vbox = wx.BoxSizer(wx.VERTICAL)
final_vbox.Add(self.Panel2, 1, wx.ALL|wx.EXPAND, 2)
self.SetSizerAndFit(final_vbox)
class TestFrame(wx.Frame):
def __init__(self, *args, **kwargs):
# Init the base class
wx.Frame.__init__(self, *args, **kwargs)
panel = TestPanel(self)
self.SetClientSize(wx.Size(500,500))
self.Center()
class wxFileCleanupApp(wx.App):
def __init__(self, *args, **kwargs):
# Init the base class
wx.App.__init__(self, *args, **kwargs)
def OnInit(self):
# Create the frame, center it, and show it
frame = TestFrame(None, title='Test Frame')
frame.Show()
return True
if __name__ == '__main__':
app = wxFileCleanupApp()
app.MainLoop()
4 个回答
2
你为什么要去继承它呢？你需要自动换行吗？如果需要的话，wx.lib.wordwrap里有一个模块可以帮你实现这个功能。
针对提问者的评论，可以看看这个：
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()
我用的是提问者的评论作为文本。总之，这在我的Windows XP、Python 2.5和wxPython 2.8.10.1上运行得很好。
5
我使用了
width = 200 # panel width
txt = wx.StaticText(panel, label=text)
txt.Wrap(width)
这个方法效果很好，后面的控件位置也都对了。你可以很方便地动态调整 txt.Wrap(width)。
5
我用Mike Driscoll的代码作为基础，希望能展示我遇到的问题。这里有两种不同的使用“txt”的方式。我想让你尝试以下三件事：
直接运行代码。使用我的StaticWrapText。最开始显示得不对，但你调整一下窗口大小，它就会完全按照我想要的方式工作。文本下面没有空白或浪费的空间，紧接着就是“按钮”。
把这两行代码改一下（改一下注释）：
txt = wx.StaticText(panel, label=text)
#txt = StaticWrapText(panel, label=text)
现在你会发现文本没有换行，一直在一行上。这显然不是我们想要的。这是因为“sizer.Add(txt, 0, wx.EXPAND, 5) ”...接下来是第三部分...保留第二部分的修改，同时把：
sizer.Add(txt, 0, wx.EXPAND, 5)
改成：
sizer.Add(txt, 1, wx.EXPAND, 5)
这样静态文本就会扩展。这接近于我们想要的效果...但是我不想在文本和按钮之间留那么多空白。如果你把窗口调大，会有很多浪费的空间。调整窗口大小后，看看第一部分的效果，能看到区别。
代码：
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()
编辑：
啊哈...终于！我尝试在程序的几乎每个层级使用Layout()方法，但我其实需要在SIZER上使用Layout()，这个SIZER可以通过GetSizer()方法找到，或者你可以对面板发送SendSizeEvent()（在下面的代码中注释掉了）。所以，接下来这段代码现在完全符合我的要求！感谢你的帮助。唯一的其他修改是把面板存储为self.panel在框架类中。需要注意的是，我必须把这条语句放在frame.Show()之后，否则它不会正确工作。
代码：
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()
最后需要注意的是，在我最初发布的程序中，以下这行需要在frame.Show()之前或之后添加：
frame.panel.Panel2.GetSizer().Layout()
有趣的是...在那个原始示例中，这行代码可以在frame.Show()之前或之后，但另一个示例要求它必须在frame.Show()之后。我不太确定为什么，但最好放在后面，这样就没问题了。