Source Code for Module tipwin

 1  #!/usr/bin/env python 
 2   
 3  ### BITPIM 
 4  ### 
 5  ### Copyright (C) 2006 Joe Pham<djpham@bitpim.org> 
 6  ### 
 7  ### This program is free software; you can redistribute it and/or modify 
 8  ### it under the terms of the BitPim license as detailed in the LICENSE file. 
 9  ### 
10  ### $Id: tipwin.py 3676 2006-11-14 03:25:45Z djpham $ 
11   
12  """ 
13  A TipWindow class that can properly handle tab(\t) characters. 
14  Limitation: This class does not do text wrapping! 
15  """ 
16   
17  import wx 
18   
19  space_count=4   # expand a tab by the # of spaces 
20  TEXT_MARGIN_X=3 
21  TEXT_MARGIN_Y=3 
22  parentclass=wx.TipWindow 
23 -class TipWindow(parentclass): 
24 -    def __init__(self, parent, text, maxwidth=100, rectbound=None): 
25          global TEXT_MARGIN_X 
26          super(TipWindow, self).__init__(parent, text, maxwidth, rectbound) 
27          _children_wins=self.GetChildren() 
28          if len(_children_wins)!=1: 
29              # can't find the view window, bail 
30              return 
31          self._view=_children_wins[0] 
32          self._text=text 
33          self._max_w=maxwidth 
34          self._line_h=0 
35          self._col_x=[TEXT_MARGIN_X] 
36          self.adjust() 
37          wx.EVT_PAINT(self._view, self.OnPaintView) 
38   
39 -    def adjust(self): 
40          # adjust the width of this window if there tabs 
41          global space_count 
42          if self._text.find('\t')==-1: 
43              # no tab, bail 
44              return 
45          _dc=wx.ClientDC(self._view) 
46          _dc.SetFont(self._view.GetFont()) 
47          for _line in self._text.split('\n'): 
48              _cnt=0 
49              for _col in _line.split('\t'): 
50                  _cnt+=1 
51                  if _cnt>=len(self._col_x): 
52                      self._col_x.append(0) 
53                  _w, _h=_dc.GetTextExtent(_col) 
54                  self._col_x[_cnt]=max(_w, self._col_x[_cnt]) 
55                  self._line_h=max(self._line_h, _h) 
56          _space_w=_dc.GetTextExtent(' '*space_count)[0] 
57          for _cnt in range(1, len(self._col_x)): 
58              self._col_x[_cnt]+=self._col_x[_cnt-1]+_space_w 
59          _w, _h=self.GetClientSizeTuple() 
60          _w=min(self._col_x[-1]-_space_w+self._col_x[0], self._max_w) 
61          self.SetClientSizeWH(_w, _h) 
62          self._view.SetDimensions(0, 0, _w, _h) 
63   
64 -    def OnPaintView(self, _): 
65          global TEXT_MARGIN_Y 
66          _dc=wx.PaintDC(self._view) 
67          # First, fill the background 
68          _background=self._view.GetBackgroundColour() 
69          _foreground=self._view.GetForegroundColour() 
70          _dc.SetBrush(wx.Brush(_background, wx.SOLID)) 
71          _dc.SetPen(wx.Pen(_foreground, 1, wx.SOLID)) 
72          _dc.DrawRectangle(0, 0, *self._view.GetClientSizeTuple()) 
73          # and then draw the text line by line 
74          _dc.SetTextBackground(_background) 
75          _dc.SetTextForeground(_foreground) 
76          _dc.SetFont(self._view.GetFont()) 
77          _y=TEXT_MARGIN_Y 
78          for _line in self._text.split('\n'): 
79              for _idx, _col in enumerate(_line.split('\t')): 
80                  _dc.DrawText(_col, self._col_x[_idx], _y) 
81              _y+=self._line_h 
82