QgsColorRamp class

Derived classes

class QgsColorBrewerColorRamp

Color ramp utilising "Color Brewer" preset color schemes.

class QgsGradientColorRamp

Gradient color ramp, which smoothly interpolates between two colors and also supports optional extra color stops.

class QgsLimitedRandomColorRamp

Constrained random color ramp, which returns random colors based on preset parameters.

class QgsPresetSchemeColorRamp

A scheme based color ramp consisting of a list of predefined colors.

class QgsRandomColorRamp

Totally random color ramp.

Public functions

auto clone() const -> QgsColorRamp* pure virtual

Creates a clone of the color ramp.

auto color(double value) const -> QColor pure virtual

Returns the color corresponding to a specified value.

auto count() const -> int pure virtual

Returns number of defined colors, or -1 if undefined.

void invert() virtual

Inverts the ordering of the color ramp.

auto properties() const -> QgsStringMap pure virtual

Returns a string map containing all the color ramp's properties.

auto type() const -> QString pure virtual

Returns a string representing the color ramp type.

auto value(int index) const -> double pure virtual

Returns relative value between [0,1] of color at specified index.

Function documentation