categoricalpalette.h File Reference

Identity-based color palette for visually-distinct categories. More...

#include <QColor>
#include <QList>
#include <QString>
#include <QStringList>

Include dependency graph for categoricalpalette.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Namespaces
namespace	CategoricalPalette

Functions
QColor	CategoricalPalette::at (int index)
	Returns the i-th color from the default categorical palette.
int	CategoricalPalette::size ()
	Number of colors in one full cycle before the palette wraps.
QList< QColor >	CategoricalPalette::palette ()
	Returns the full palette as an ordered list.
QList< QColor >	CategoricalPalette::byName (const QString &name)
	Returns the named palette as an ordered list. Falls back to the default (Tab10) when name doesn't match any built-in.
QStringList	CategoricalPalette::builtinNames ()
	Names of all built-in palettes, in catalogue order. Used by the Categorized tab's m_catScheme combo to populate its dropdown.

Detailed Description

Identity-based color palette for visually-distinct categories.

Author

Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

Date

2026

License\n GPL-3.0-or-later

    Used wherever multiple unordered items need to be drawn at once
    in colors a reader can quickly tell apart — multi-path highlights
    in the profile-path picker, multi-source line series in the profile
    plot, and similar.  This is structurally different from
    RasterColorRamp, which maps a numeric value onto a gradient: here
    the index has no ordinal meaning.