限制靜態文本寬度

Question

我有幾個大小測定器和一些量規，我想擴大到該區域或幀的大小，所述面板被放置在工作正常的面板。但是，當StaticText增加到比可用空間更大的尺寸時，我遇到了問題，將面板的邊緣和量表從屏幕或可見區域展開。我想知道是否有一種方法可以通過簡短地刪除文本來停止文本，而不用指定精確的大小，基本上它知道顯示區域的邊緣在哪裏。我可以通過將我更新的文本移動到它們自己的面板來解決這個問題，這樣我就可以在其面板上調用Update，使得規格尺寸保持不變，但文本仍然會耗盡我的StaticBox並關閉顯示屏，理想。

我可以自動換行下一行，但我注意到，在空間包裹休息和我長的文本是它很可能不會有空格的文件路徑，是否有可能在比空間以外的東西打破？

無論是包裝或截斷將是確定，只是爲了阻止它運行在

Answer 1

你，你不能完成的靜態文本內容，那麼我 可以看到的唯一的解決辦法是「ellipsize」它，即縮短它通過預先或 將「...」附加到文件路徑。要做到這一點，但是，我相信你的 最好的選擇是去自行繪製（或簡稱子類 wx.lib.stattext），測量在篩上部分事件的文字大小爲您 控制，如果需要的話，前置/追加「...」到你的路徑。

附加了一個概念證明，最後帶有「橢圓化」（即附加 「...」，文件名在截尾處截斷）。我收集它 將延伸到預先添加「...」而不是 追加。

哦，順便說一下，在wxPython中2.9你也可以使用 wx.StaticText.Ellipsize來（也許）做同樣的事情，雖然我有 從來沒有用它自己。

代碼示例：

import wx 
from wx.lib.stattext import GenStaticText as StaticText 

if wx.Platform == "__WXMAC__": 
    from Carbon.Appearance import kThemeBrushDialogBackgroundActive 


class EllipticStaticText(StaticText): 

    def __init__(self, parent, id=wx.ID_ANY, label='', pos=wx.DefaultPosition, size=wx.DefaultSize, 
       style=0, name="ellipticstatictext"): 
     """ 
     Default class constructor. 

     :param `parent`: the L{EllipticStaticText} parent. Must not be ``None``; 
     :param `id`: window identifier. A value of -1 indicates a default value; 
     :param `label`: the text label; 
     :param `pos`: the control position. A value of (-1, -1) indicates a default position, 
     chosen by either the windowing system or wxPython, depending on platform; 
     :param `size`: the control size. A value of (-1, -1) indicates a default size, 
     chosen by either the windowing system or wxPython, depending on platform; 
     :param `style`: the static text style; 
     :param `name`: the window name. 
     """ 

     StaticText.__init__(self, parent, id, label, pos, size, style, name) 

     self.Bind(wx.EVT_SIZE, self.OnSize) 
     self.Bind(wx.EVT_PAINT, self.OnPaint) 
     self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground) 


    def OnSize(self, event): 
     """ 
     Handles the ``wx.EVT_SIZE`` event for L{EllipticStaticText}. 

     :param `event`: a `wx.SizeEvent` event to be processed. 
     """ 

     event.Skip() 
     self.Refresh() 


    def OnEraseBackground(self, event): 
     """ 
     Handles the ``wx.EVT_ERASE_BACKGROUND`` event for L{EllipticStaticText}. 

     :param `event`: a `wx.EraseEvent` event to be processed. 

     :note: This is intentionally empty to reduce flicker. 
     """ 

     pass 


    def OnPaint(self, event): 
     """ 
     Handles the ``wx.EVT_PAINT`` event for L{EllipticStaticText}. 

     :param `event`: a `wx.PaintEvent` to be processed. 
     """ 

     dc = wx.BufferedPaintDC(self)   
     width, height = self.GetClientSize() 

     if not width or not height: 
      return 

     clr = self.GetBackgroundColour() 

     if wx.Platform == "__WXMAC__": 
      # if colour is still the default then use the theme's background on Mac 
      themeColour = wx.MacThemeColour(kThemeBrushDialogBackgroundActive) 
      backBrush = wx.Brush(themeColour) 
     else: 
      backBrush = wx.Brush(clr, wx.SOLID) 

     dc.SetBackground(backBrush) 
     dc.Clear() 

     if self.IsEnabled(): 
      dc.SetTextForeground(self.GetForegroundColour()) 
     else: 
      dc.SetTextForeground(wx.SystemSettings.GetColour(wx.SYS_COLOUR_GRAYTEXT)) 

     dc.SetFont(self.GetFont()) 

     label = self.GetLabel() 
     text = self.ChopText(dc, label, width) 

     dc.DrawText(text, 0, 0) 


    def ChopText(self, dc, text, max_size): 
     """ 
     Chops the input `text` if its size does not fit in `max_size`, by cutting the 
     text and adding ellipsis at the end. 

     :param `dc`: a `wx.DC` device context; 
     :param `text`: the text to chop; 
     :param `max_size`: the maximum size in which the text should fit. 
     """ 

     # first check if the text fits with no problems 
     x, y = dc.GetTextExtent(text) 

     if x <= max_size: 
      return text 

     textLen = len(text) 
     last_good_length = 0 

     for i in xrange(textLen, -1, -1): 
      s = text[0:i] 
      s += "..." 

      x, y = dc.GetTextExtent(s) 
      last_good_length = i 

      if x < max_size: 
       break 

     ret = text[0:last_good_length] + "..."  
     return ret 


    def Example(): 

     app = wx.PySimpleApp() 
     frame = wx.Frame(None, -1, "EllipticStaticText example ;-)", size=(400, 300)) 

     panel = wx.Panel(frame, -1) 
     sizer = wx.BoxSizer(wx.VERTICAL) 

     elliptic = EllipticStaticText(panel, -1, r"F:\myreservoir\re\util\python\hm_evaluation\data\HM_Evaluation_0.9.9.7.exe") 
     whitePanel = wx.Panel(panel, -1) 
     whitePanel.SetBackgroundColour(wx.WHITE) 

     sizer.Add(elliptic, 0, wx.ALL|wx.EXPAND, 10) 
     sizer.Add(whitePanel, 1, wx.ALL|wx.EXPAND, 10) 

     panel.SetSizer(sizer) 
     sizer.Layout() 

     frame.CenterOnScreen() 
     frame.Show() 

     app.MainLoop() 


    if __name__ == "__main__": 

     Example()