Traceback when copying or creating a theme with background image on Windows

[Tomas Groth]

Reproducable on Windows with the 2.1.1 beta

When copying a theme with background image I get this traceback:
Traceback (most recent call last):
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\thememanager.py", line 298, in on_copy_theme
    self.clone_theme_data(theme_data, new_theme_name)
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\thememanager.py", line 314, in clone_theme_data
    self.save_theme(theme_data, save_from, save_to)
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\thememanager.py", line 632, in save_theme
    self._write_theme(theme, image_from, image_to)
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\thememanager.py", line 666, in _write_theme
    shutil.copyfile(str(image_from).encode(encoding), str(image_to).encode(encoding))
  File "c:\python33\lib\shutil.py", line 92, in copyfile
    if _samefile(src, dst):
  File "c:\python33\lib\shutil.py", line 77, in _samefile
    return os.path.samefile(src, dst)
  File "c:\python33\lib\ntpath.py", line 603, in samefile
    return _getfinalpathname(f1) == _getfinalpathname(f2)
TypeError: must be str, not bytes

When createing a new theme with background image I get this traceback:
Traceback (most recent call last):
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\themeform.py", line 533, in accept
    self.theme_manager.save_theme(self.theme, save_from, save_to)
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\thememanager.py", line 632, in save_theme
    self._write_theme(theme, image_from, image_to)
  File "C:\Users\tgc\OpenLP\trunk\openlp\core\ui\thememanager.py", line 666, in _write_theme
    shutil.copyfile(str(image_from).encode(encoding), str(image_to).encode(encoding))
  File "c:\python33\lib\shutil.py", line 92, in copyfile
    if _samefile(src, dst):
  File "c:\python33\lib\shutil.py", line 77, in _samefile
    return os.path.samefile(src, dst)
  File "c:\python33\lib\ntpath.py", line 603, in samefile
    return _getfinalpathname(f1) == _getfinalpathname(f2)
TypeError: must be str, not bytes

Problem is in same method: _write_theme
Most likely shutil.copyfile cannot handle bytes input on windows. This is not an issue on linux.