The Function Library group was a big Insert Function button followed by
AutoSum and seven big category buttons that all drew the same icon, the
widest group on the Formulas tab. It is now laid out as Excel lays it
out when the window is not wide enough for a big button per category:
big Insert Function and AutoSum buttons, then the categories as
labelled small buttons in columns of three:
Recently Used Text Math & Trig
Financial Date & Time More Functions
Logical Lookup & Reference
- The category buttons draw a new code-drawn icon, Icon::FnBook, a book
whose spine and glyph (star, coins, question mark, letter, clock,
magnifier, theta, dots) take the category's colour from the theme's
category palette. icons::paint_accent draws an icon with an accent
colour, and widgets::small_button_accent is a small button that uses
it; small_button is unchanged for its callers.
- AutoSum stays the big split button: the icon inserts SUM, the label
and arrow open the AutoSum menu, which now reads Sum, Average, Count
Numbers, Max, Min and More Functions… and is shared with Home ›
Editing. Its tooltip names the control only, so the shortcut comes
from the platform lookup (Alt+= on Windows and Linux).
- Each category menu lists its functions with their descriptions on
hover and ends with Insert Function…, which opens the dialog with
that category. More Functions cascades into Statistical, Engineering,
Cube, Information, Compatibility and Web. Recently Used lists what
the engine's formulas.recentlyUsed returns.
- The function categories, the function list (built once) and the menus
live in a new function_library module; the dialog's category labels
come from it.
- keytips.json gains MR for Recently Used, Excel's sequence. Labelled
small and big buttons report their label to accessibility.
- The one-line labels (Date & Time, Lookup & Reference, Math & Trig,
More Functions) replace the two-line keys in every interface
language, with the same words. Recently Used is translated in Czech,
German, Spanish, French, Japanese, Korean, Portuguese, Russian and
Chinese; the other languages show it in English, their fallback.
Tests: tests/it/function_library.rs covers the layout (columns of three
level with the tab's other columns), each category menu and its Insert
Function… row, the More Functions cascade, the AutoSum split button and
its menu, and the MR key tip. A ribbon unit test keeps Command-key
glyphs out of the ribbon's text. chart_resize picks the chart menu's
Delete now that Home › Cells' Delete has an accessible name.
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