numerotationcontextcommands.cpp File Reference

#include "numerotationcontextcommands.h"
#include "../diagram.h"

Include dependency graph for numerotationcontextcommands.cpp:

Namespaces
namespace	anonymous_namespace{numerotationcontextcommands.cpp}

Functions
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').
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.