Color ramp utilising "Color Brewer" preset color schemes. More...

#include <qgscolorramp.h>

Inheritance diagram for QgsColorBrewerColorRamp:

Public Member Functions
	QgsColorBrewerColorRamp (const QString &schemeName=DEFAULT_COLORBREWER_SCHEMENAME, int colors=DEFAULT_COLORBREWER_COLORS, bool inverted=false)
	Constructor for QgsColorBrewerColorRamp. More...

QgsColorBrewerColorRamp *	clone () const override
	Creates a clone of the color ramp. More...

QColor	color (double value) const override
	Returns the color corresponding to a specified value. More...

int	colors () const
	Returns the number of colors in the ramp. More...

int	count () const override
	Returns number of defined colors, or -1 if undefined. More...

void	invert () override
	Inverts the ordering of the color ramp. More...

QVariantMap	properties () const override
	Returns a string map containing all the color ramp's properties. More...

QString	schemeName () const
	Returns the name of the color brewer color scheme. More...

void	setColors (int colors)
	Sets the number of colors in the ramp. More...

void	setSchemeName (const QString &schemeName)
	Sets the name of the color brewer color scheme. More...

QString	type () const override
	Returns a string representing the color ramp type. More...

double	value (int index) const override
	Returns relative value between [0,1] of color at specified index. More...

Public Member Functions inherited from QgsColorRamp
virtual	~QgsColorRamp ()=default

Static Public Member Functions
static QgsColorRamp *	create (const QVariantMap &properties=QVariantMap())
	Returns a new QgsColorBrewerColorRamp color ramp created using the properties encoded in a string map. More...

static QStringList	listSchemeNames ()
	Returns a list of all valid color brewer scheme names. More...

static QList< int >	listSchemeVariants (const QString &schemeName)
	Returns a list of the valid variants (numbers of colors) for a specified color brewer scheme name. More...

static QString	typeString ()
	Returns the string identifier for QgsColorBrewerColorRamp. More...

Static Public Member Functions inherited from QgsColorRamp
static QList< QPair< QString, QString > >	rampTypes ()
	Returns a list of available ramp types, where the first value in each item is the QgsColorRamp::type() string and the second is a user friendly, translated name for the color ramp type. More...

Protected Member Functions
void	loadPalette ()
	Generates the scheme using the current name and number of colors. More...

Protected Attributes
int	mColors

bool	mInverted

QList< QColor >	mPalette

QString	mSchemeName

Detailed Description

Color ramp utilising "Color Brewer" preset color schemes.

Since: QGIS 3.0

Definition at line 577 of file qgscolorramp.h.

Constructor & Destructor Documentation

◆ QgsColorBrewerColorRamp()

QgsColorBrewerColorRamp::QgsColorBrewerColorRamp	(	const QString &	schemeName = `DEFAULT_COLORBREWER_SCHEMENAME`,
		int	colors = `DEFAULT_COLORBREWER_COLORS`,
		bool	inverted = `false`
	)

Constructor for QgsColorBrewerColorRamp.

Parameters

schemeName	color brewer scheme name
colors	number of colors in ramp
inverted	invert ramp ordering

Definition at line 509 of file qgscolorramp.cpp.

Member Function Documentation

◆ clone()

QgsColorBrewerColorRamp * QgsColorBrewerColorRamp::clone ( ) const

overridevirtual

Creates a clone of the color ramp.

Implements QgsColorRamp.

Definition at line 583 of file qgscolorramp.cpp.

◆ color()

QColor QgsColorBrewerColorRamp::color ( double value ) const

overridevirtual

Returns the color corresponding to a specified value.

Parameters

value value between [0, 1] inclusive

Returns: color for value

Implements QgsColorRamp.

Definition at line 566 of file qgscolorramp.cpp.

◆ colors()

int QgsColorBrewerColorRamp::colors ( ) const

inline

Returns the number of colors in the ramp.

See also: setColors()

Definition at line 625 of file qgscolorramp.h.

◆ count()

int QgsColorBrewerColorRamp::count ( ) const

inlineoverridevirtual

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

Implements QgsColorRamp.

Definition at line 613 of file qgscolorramp.h.

◆ create()

QgsColorRamp * QgsColorBrewerColorRamp::create ( const QVariantMap & properties = QVariantMap() )

static

Returns a new QgsColorBrewerColorRamp color ramp created using the properties encoded in a string map.

Parameters

properties color ramp properties

See also: properties()

Definition at line 517 of file qgscolorramp.cpp.

◆ invert()

void QgsColorBrewerColorRamp::invert ( )

overridevirtual

Inverts the ordering of the color ramp.

Reimplemented from QgsColorRamp.

Definition at line 577 of file qgscolorramp.cpp.

◆ listSchemeNames()

QStringList QgsColorBrewerColorRamp::listSchemeNames ( )

static

Returns a list of all valid color brewer scheme names.

See also: listSchemeVariants()

Definition at line 549 of file qgscolorramp.cpp.

◆ listSchemeVariants()

QList< int > QgsColorBrewerColorRamp::listSchemeVariants ( const QString & schemeName )

static

Returns a list of the valid variants (numbers of colors) for a specified color brewer scheme name.

Parameters

schemeName color brewer scheme name

See also: listSchemeNames()

Definition at line 554 of file qgscolorramp.cpp.

◆ loadPalette()

void QgsColorBrewerColorRamp::loadPalette ( )

protected

Generates the scheme using the current name and number of colors.

Definition at line 533 of file qgscolorramp.cpp.

◆ properties()

QVariantMap QgsColorBrewerColorRamp::properties ( ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 588 of file qgscolorramp.cpp.

◆ schemeName()

QString QgsColorBrewerColorRamp::schemeName ( ) const

inline

Returns the name of the color brewer color scheme.

See also: setSchemeName()

Definition at line 619 of file qgscolorramp.h.

◆ setColors()

void QgsColorBrewerColorRamp::setColors ( int colors )

inline

Sets the number of colors in the ramp.

Parameters

colors number of colors. Must match a valid value for the scheme, which can be retrieved using listSchemeVariants()

See also: colors()

Definition at line 641 of file qgscolorramp.h.

◆ setSchemeName()

void QgsColorBrewerColorRamp::setSchemeName ( const QString & schemeName )

inline

Sets the name of the color brewer color scheme.

Parameters

schemeName scheme name, must match a valid color brewer scheme name

See also: schemeName(); listSchemeNames()

Definition at line 633 of file qgscolorramp.h.

◆ type()

QString QgsColorBrewerColorRamp::type ( ) const

inlineoverridevirtual

Returns a string representing the color ramp type.

Implements QgsColorRamp.

Definition at line 609 of file qgscolorramp.h.

◆ typeString()

static QString QgsColorBrewerColorRamp::typeString ( )

inlinestatic

Returns the string identifier for QgsColorBrewerColorRamp.

Since: QGIS 3.16

Definition at line 607 of file qgscolorramp.h.

◆ value()

double QgsColorBrewerColorRamp::value ( int index ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 559 of file qgscolorramp.cpp.

Member Data Documentation

◆ mColors

int QgsColorBrewerColorRamp::mColors

protected

Definition at line 663 of file qgscolorramp.h.

◆ mInverted

bool QgsColorBrewerColorRamp::mInverted

protected

Definition at line 665 of file qgscolorramp.h.

◆ mPalette

QList<QColor> QgsColorBrewerColorRamp::mPalette

protected

Definition at line 664 of file qgscolorramp.h.

◆ mSchemeName

QString QgsColorBrewerColorRamp::mSchemeName

protected

Definition at line 662 of file qgscolorramp.h.

The documentation for this class was generated from the following files:

/build/qgis-3.18.1+99unstable/src/core/qgscolorramp.h
/build/qgis-3.18.1+99unstable/src/core/qgscolorramp.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ QgsColorBrewerColorRamp()

Member Function Documentation

◆ clone()

◆ color()

◆ colors()

◆ count()

◆ create()

◆ invert()

◆ listSchemeNames()

◆ listSchemeVariants()

◆ loadPalette()

◆ properties()

◆ schemeName()

◆ setColors()

◆ setSchemeName()

◆ type()

◆ typeString()

◆ value()

Member Data Documentation

◆ mColors

◆ mInverted

◆ mPalette

◆ mSchemeName