Let Shapes and SlidePlaceholders fulfill the Mapping interface#800
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timhoffm wants to merge 1 commit into
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Let Shapes and SlidePlaceholders fulfill the Mapping interface#800timhoffm wants to merge 1 commit into
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Both are essentially mappings and define the minimal interface for `collections.abc.Mapping` (https://docs.python.org/3/library/collections.abc.html#collections-abstract-base-classes). By inheriting from `Mapping` we mix in the full mapping behavior, .e.g. `.get()` and `.key()` methods. This is to make these collections feel more pythonic. Additionally, it's a real usability improvement: e.g. for `SlidePlaceholders` one cannot guess the valid keys, which makes `placeholders[idx]` difficult to use. Having `placeholders.keys()` available makes inspection much easier.
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… Frame fit/justify (scanny#773, scanny#791, scanny#794) (scanny#800) Box.text(text, style={"font_size_pt": N, ...}) now estimates natural_w / natural_h from the text content + font size when the caller leaves both axes implicit (width ~= len(longest_line) * font_size_pt * 0.55em capped at 8in; height ~= font_size_pt * line_count * 1.4). Authors who wrote ``Box.text("Title", style={"font_size_pt": 28})`` previously got a 1in x 10pt rectangle and watched their text overflow; the estimator now hands them a usable allocation. from_markdown stamps a default 11pt body size on bullet / paragraph leaves so the estimator runs for them too. Stack.wrap accepts "when_overflow" as a CSS-flexbox alias for "auto" (both spellings dispatch to the same wrap path; the spelling round-trips through to_spec / from_spec). Frame(fit="contain") is silently promoted to "fill" when the child is a Stack whose justify is space-between / space-around / space-evenly, so the distribution mode actually receives the full inner rectangle. Closes scanny#773. Closes scanny#791. Closes scanny#794. Co-authored-by: Ben Hooper <ben@plex.networkinsanity.com> Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
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Both are essentially mappings and define the minimal interface
for
collections.abc.Mapping(https://docs.python.org/3/library/collections.abc.html#collections-abstract-base-classes),i.e.
__iter__,__getitem__and__len__.By inheriting from
Mappingwe mix in the full mapping behavior, .e.g..get()and
.key()methods. This is to make these collections feel more pythonic.Additionally, it's a real usability improvement: e.g. for
SlidePlaceholdersone cannot guess the valid keys, which makes
placeholders[idx]difficult to use.Having
placeholders.keys()available makes inspection much easier.