anonymous_namespace{numerotationcontextcommands.cpp} Namespace Reference

Functions
QString	incrementAlpha (QString value)
	incrementAlpha Base-26 letter increment (a, b, ... z, aa, ab, ... az, ba, ...), the same algorithm as incrementing a spreadsheet column name. Carries right-to-left on 'z'/'Z' overflow; if the whole string overflows, a new leading letter is prepended (lowercase 'a').
QString	decrementAlpha (QString value)
	decrementAlpha Inverse of incrementAlpha(): borrows right-to-left on 'a'/'A' underflow. Symmetric shrink case (e.g. "aa" -> "z"): once every position has borrowed, the leading letter is dropped rather than left as an extra 'z'. A single-letter value already at "a"/"A" has no representable predecessor and is left unchanged, the same way the numeric parts don't clamp but a blank label would be worse here than a value that stops decreasing.

Function Documentation

decrementAlpha()

QString anonymous_namespace{numerotationcontextcommands.cpp}::decrementAlpha

(

QString

value

)

decrementAlpha Inverse of incrementAlpha(): borrows right-to-left on 'a'/'A' underflow. Symmetric shrink case (e.g. "aa" -> "z"): once every position has borrowed, the leading letter is dropped rather than left as an extra 'z'. A single-letter value already at "a"/"A" has no representable predecessor and is left unchanged, the same way the numeric parts don't clamp but a blank label would be worse here than a value that stops decreasing.

Parameters

value

: current alphabetic value; treated as "a" if empty.

Returns

the previous value.

incrementAlpha()

QString anonymous_namespace{numerotationcontextcommands.cpp}::incrementAlpha

(

QString

value

)

incrementAlpha Base-26 letter increment (a, b, ... z, aa, ab, ... az, ba, ...), the same algorithm as incrementing a spreadsheet column name. Carries right-to-left on 'z'/'Z' overflow; if the whole string overflows, a new leading letter is prepended (lowercase 'a').

Parameters

value

: current alphabetic value; treated as "a" if empty.

Returns

the next value.