wxPython/wx/lib/stattext.py

   1 #----------------------------------------------------------------------
   2 # Name:        wx.lib.stattext
   3 # Purpose:     A generic wxGenStaticText class.  Using this should
   4 #              eliminate some of the platform differences in wxStaticText,
   5 #              such as background colours and mouse sensitivity.
   6 #
   7 # Author:      Robin Dunn
   8 #
   9 # Created:     8-July-2002
  10 # RCS-ID:      $Id$
  11 # Copyright:   (c) 2002 by Total Control Software
  12 # Licence:     wxWindows license
  13 #----------------------------------------------------------------------
  14
  15 """
  16 """
  17
  18 import wx
  19
  20 #----------------------------------------------------------------------
  21
  22 class GenStaticText(wx.PyControl):
  23     labelDelta = 1
  24
  25     def __init__(self, parent, ID, label,
  26                  pos = wx.DefaultPosition, size = wx.DefaultSize,
  27                  style = 0,
  28                  name = "genstattext"):
  29         wx.PyControl.__init__(self, parent, ID, pos, size, style|wx.NO_BORDER,
  30                              wx.DefaultValidator, name)
  31
  32         wx.PyControl.SetLabel(self, label) # don't check wx.ST_NO_AUTORESIZE yet
  33         self.SetPosition(pos)
  34         font = parent.GetFont()
  35         if not font.Ok():
  36             font = wx.SystemSettings.GetSystemFont(wx.SYS_DEFAULT_GUI_FONT)
  37         wx.PyControl.SetFont(self, font) # same here
  38
  39         self.defBackClr = parent.GetBackgroundColour()
  40         if not self.defBackClr.Ok():
  41             self.defBackClr = wx.SystemSettings.GetSystemColour(wx.SYS_COLOUR_3DFACE)
  42         self.SetBackgroundColour(self.defBackClr)
  43
  44         clr = parent.GetForegroundColour()
  45         if not clr.Ok():
  46             clr = wx.SystemSettings_GetSystemColour(wx.SYS_COLOUR_BTNTEXT)
  47         self.SetForegroundColour(clr)
  48
  49         rw, rh = size
  50         bw, bh = self.GetBestSize()
  51         if rw == -1: rw = bw
  52         if rh == -1: rh = bh
  53         self.SetSize(wx.Size(rw, rh))
  54
  55         wx.EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
  56         wx.EVT_PAINT(self,            self.OnPaint)
  57
  58
  59     def SetLabel(self, label):
  60         """
  61         Sets the static text label and updates the control's size to exactly
  62         fit the label unless the control has wx.ST_NO_AUTORESIZE flag.
  63         """
  64         wx.PyControl.SetLabel(self, label)
  65         style = self.GetWindowStyleFlag()
  66         if not style & wx.ST_NO_AUTORESIZE:
  67             self.SetSize(self.GetBestSize())
  68         self.Refresh()
  69
  70
  71     def SetFont(self, font):
  72         """
  73         Sets the static text font and updates the control's size to exactly
  74         fit the label unless the control has wx.ST_NO_AUTORESIZE flag.
  75         """
  76         wx.PyControl.SetFont(self, font)
  77         style = self.GetWindowStyleFlag()
  78         if not style & wx.ST_NO_AUTORESIZE:
  79             self.SetSize(self.GetBestSize())
  80         self.Refresh()
  81
  82
  83     def DoGetBestSize(self):
  84         """Overridden base class virtual.  Determines the best size of the
  85         button based on the label size."""
  86         label = self.GetLabel()
  87         maxWidth = totalHeight = 0
  88         for line in label.split('\n'):
  89             if line == '':
  90                 w, h = self.GetTextExtent('W')  # empty lines have height too
  91             else:
  92                 w, h = self.GetTextExtent(line)
  93             totalHeight += h
  94             maxWidth = max(maxWidth, w)
  95         return wx.Size(maxWidth, totalHeight)
  96
  97
  98     def AcceptsFocus(self):
  99         """Overridden base class virtual."""
 100         return False
 101
 102
 103     def OnPaint(self, event):
 104         dc = wx.BufferedPaintDC(self)
 105         #dc = wx.PaintDC(self)
 106         width, height = self.GetClientSize()
 107         if not width or not height:
 108             return
 109
 110         clr = self.GetBackgroundColour()
 111         backBrush = wx.Brush(clr, wx.SOLID)
 112         if wx.Platform == "__WXMAC__" and clr == self.defBackClr:
 113             # if colour is still the default then use the striped background on Mac
 114             backBrush.SetMacTheme(1) # 1 == kThemeBrushDialogBackgroundActive
 115         dc.SetBackground(backBrush)
 116
 117         dc.SetTextForeground(self.GetForegroundColour())
 118         dc.Clear()
 119         dc.SetFont(self.GetFont())
 120         label = self.GetLabel()
 121         style = self.GetWindowStyleFlag()
 122         x = y = 0
 123         for line in label.split('\n'):
 124             if line == '':
 125                 w, h = self.GetTextExtent('W')  # empty lines have height too
 126             else:
 127                 w, h = self.GetTextExtent(line)
 128             if style & wx.ALIGN_RIGHT:
 129                 x = width - w
 130             if style & wx.ALIGN_CENTER:
 131                 x = (width - w)/2
 132             dc.DrawText(line, (x, y))
 133             y += h
 134
 135
 136     def OnEraseBackground(self, event):
 137         pass
 138
 139
 140
 141
 142 #----------------------------------------------------------------------
 143
 144