Method reset

Lib/pagebot/contexts/basecontext/babelstring.py:144–165

Clears the context cache, in case the string source changed, to force new calculation of context dependent wrapping. >>> from pagebot.contexts import getContext >>> context = getContext() >>> bs = BabelString('ABCD', dict(fontSize=24), context=context) >>> #

(self)

    context = property(_get_context, _set_context)

    def reset(self):
        """Clears the context cache, in case the string source changed, to
        force new calculation of context dependent wrapping.

        >>> from pagebot.contexts import getContext
        >>> context = getContext()
        >>> bs = BabelString('ABCD', dict(fontSize=24), context=context)
        >>> # Triggers rendering of the FormattedString.
        >>> bs.cs is not None
        True
        >>> bs.reset() # Reset the caching.
        >>> bs._cs is None
        True
        """
        # Storage of native context string (e.g. Drawbot.FormattedString or
        # FlatStringData, containing Strike/Paragraph/Text instances).
        self._cs = None
        self._lines = None # Cache of calculated meta info after line wrapping.
        self._twh = None # Cache of calculated text width (self.tw, self.th)
        self._pwh = None # Cache of calculated pixel width (self.pw, self.ph)
        self._overflowStart = None # Line index where overflow starts.
        self._overflowEnd = None # Line (non-inclusive)

    def _get_w(self):
        """Answers the request width of this string. If None, no width is