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#!/usr/bin/env python
### BITPIM
###
### Copyright (C) 2006 Joe Pham<djpham@bitpim.org>
###
### This program is free software; you can redistribute it and/or modify
### it under the terms of the BitPim license as detailed in the LICENSE file.
###
### $Id: tipwin.py 3676 2006-11-14 03:25:45Z djpham $
"""
A TipWindow class that can properly handle tab(\t) characters.
Limitation: This class does not do text wrapping!
"""
import wx
space_count=4 # expand a tab by the # of spaces
TEXT_MARGIN_X=3
TEXT_MARGIN_Y=3
parentclass=wx.TipWindow
class TipWindow(parentclass):
def __init__(self, parent, text, maxwidth=100, rectbound=None):
global TEXT_MARGIN_X
super(TipWindow, self).__init__(parent, text, maxwidth, rectbound)
_children_wins=self.GetChildren()
if len(_children_wins)!=1:
# can't find the view window, bail
return
self._view=_children_wins[0]
self._text=text
self._max_w=maxwidth
self._line_h=0
self._col_x=[TEXT_MARGIN_X]
self.adjust()
wx.EVT_PAINT(self._view, self.OnPaintView)
def adjust(self):
# adjust the width of this window if there tabs
global space_count
if self._text.find('\t')==-1:
# no tab, bail
return
_dc=wx.ClientDC(self._view)
_dc.SetFont(self._view.GetFont())
for _line in self._text.split('\n'):
_cnt=0
for _col in _line.split('\t'):
_cnt+=1
if _cnt>=len(self._col_x):
self._col_x.append(0)
_w, _h=_dc.GetTextExtent(_col)
self._col_x[_cnt]=max(_w, self._col_x[_cnt])
self._line_h=max(self._line_h, _h)
_space_w=_dc.GetTextExtent(' '*space_count)[0]
for _cnt in range(1, len(self._col_x)):
self._col_x[_cnt]+=self._col_x[_cnt-1]+_space_w
_w, _h=self.GetClientSizeTuple()
_w=min(self._col_x[-1]-_space_w+self._col_x[0], self._max_w)
self.SetClientSizeWH(_w, _h)
self._view.SetDimensions(0, 0, _w, _h)
def OnPaintView(self, _):
global TEXT_MARGIN_Y
_dc=wx.PaintDC(self._view)
# First, fill the background
_background=self._view.GetBackgroundColour()
_foreground=self._view.GetForegroundColour()
_dc.SetBrush(wx.Brush(_background, wx.SOLID))
_dc.SetPen(wx.Pen(_foreground, 1, wx.SOLID))
_dc.DrawRectangle(0, 0, *self._view.GetClientSizeTuple())
# and then draw the text line by line
_dc.SetTextBackground(_background)
_dc.SetTextForeground(_foreground)
_dc.SetFont(self._view.GetFont())
_y=TEXT_MARGIN_Y
for _line in self._text.split('\n'):
for _idx, _col in enumerate(_line.split('\t')):
_dc.DrawText(_col, self._col_x[_idx], _y)
_y+=self._line_h
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