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

#include <qgscolorramp.h>

Inheritance diagram for QgsPresetSchemeColorRamp:

Public Member Functions
	QgsPresetSchemeColorRamp (const QList< QColor > &colors=QList< QColor >())
	Constructor for QgsPresetSchemeColorRamp. More...

	QgsPresetSchemeColorRamp (const QgsNamedColorList &colors)
	Constructor for QgsPresetColorRamp. More...

QgsPresetSchemeColorRamp *	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...

QList< QColor >	colors () const
	Returns the list of colors used by the ramp. More...

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

QgsNamedColorList	fetchColors (const QString &context=QString(), const QColor &baseColor=QColor()) override
	Gets a list of colors from the scheme. More...

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

bool	isEditable () const override
	Returns whether the color scheme is editable. More...

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

QString	schemeName () const override
	Gets the name for the color scheme. More...

bool	setColors (const QgsNamedColorList &colors, const QString &=QString(), const QColor &=QColor()) override
	Sets the list of colors used by the ramp. 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

Public Member Functions inherited from QgsColorScheme
	QgsColorScheme ()=default
	Constructor for QgsColorScheme. More...

virtual	~QgsColorScheme ()=default

virtual SchemeFlags	flags () const
	Returns the current flags for the color scheme. More...

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

Additional Inherited Members
Public Types inherited from QgsColorScheme
enum	SchemeFlag { ShowInColorDialog = 0x01, ShowInColorButtonMenu = 0x02, ShowInAllContexts = ShowInColorDialog \| ShowInColorButtonMenu }
	Flags for controlling behavior of color scheme. More...

Detailed Description

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

Since: QGIS 3.0

Definition at line 471 of file qgscolorramp.h.

Constructor & Destructor Documentation

QgsPresetSchemeColorRamp::QgsPresetSchemeColorRamp ( const QList< QColor > & colors = QList< QColor >() )

Constructor for QgsPresetSchemeColorRamp.

Parameters

colors list of colors in ramp

Definition at line 810 of file qgscolorramp.cpp.

QgsPresetSchemeColorRamp::QgsPresetSchemeColorRamp ( const QgsNamedColorList & colors )

Constructor for QgsPresetColorRamp.

Parameters

colors list of named colors in ramp

Definition at line 821 of file qgscolorramp.cpp.

Member Function Documentation

QgsPresetSchemeColorRamp * QgsPresetSchemeColorRamp::clone ( ) const

overridevirtual

Creates a clone of the color ramp.

Implements QgsColorRamp.

Definition at line 890 of file qgscolorramp.cpp.

QColor QgsPresetSchemeColorRamp::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 865 of file qgscolorramp.cpp.

QList< QColor > QgsPresetSchemeColorRamp::colors ( ) const

Returns the list of colors used by the ramp.

See also: setColors()

Definition at line 847 of file qgscolorramp.cpp.

int QgsPresetSchemeColorRamp::count ( ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 907 of file qgscolorramp.cpp.

QgsColorRamp * QgsPresetSchemeColorRamp::create ( const QgsStringMap & properties = QgsStringMap() )

static

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

Parameters

properties color ramp properties

See also: properties()

Definition at line 829 of file qgscolorramp.cpp.

QgsNamedColorList QgsPresetSchemeColorRamp::fetchColors	(	const QString &	context = `QString()`,
		const QColor &	baseColor = `QColor()`
	)

overridevirtual

Gets a list of colors from the scheme.

The colors can optionally be generated using the supplied context and base color.

Parameters

context	string specifying an optional context for the returned colors. For instance, a "recent colors" scheme may filter returned colors by context so that colors used only in a "composer" context are returned.
baseColor	base color for the scheme's colors. Some color schemes may take advantage of this to filter or modify their returned colors to colors related to the base color.

Returns: a list of QPairs of color and color name

Implements QgsColorScheme.

Definition at line 912 of file qgscolorramp.cpp.

void QgsPresetSchemeColorRamp::invert ( )

overridevirtual

Inverts the ordering of the color ramp.

Reimplemented from QgsColorRamp.

Definition at line 879 of file qgscolorramp.cpp.

bool QgsPresetSchemeColorRamp::isEditable ( ) const

inlineoverridevirtual

Returns whether the color scheme is editable.

Returns: true if scheme is editable

See also: setColors

Reimplemented from QgsColorScheme.

Definition at line 518 of file qgscolorramp.h.

QgsStringMap QgsPresetSchemeColorRamp::properties ( ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 895 of file qgscolorramp.cpp.

QString QgsPresetSchemeColorRamp::schemeName ( ) const

inlineoverridevirtual

Gets the name for the color scheme.

Returns: color scheme name

Implements QgsColorScheme.

Definition at line 516 of file qgscolorramp.h.

bool QgsPresetSchemeColorRamp::setColors	(	const QgsNamedColorList &	colors,
		const QString &	= `QString()`,
		const QColor &	= `QColor()`
	)

inlineoverridevirtual

Sets the list of colors used by the ramp.

Parameters

colors list of colors

See also: colors()

Reimplemented from QgsColorScheme.

Definition at line 500 of file qgscolorramp.h.

QString QgsPresetSchemeColorRamp::type ( ) const

inlineoverridevirtual

Returns a string representing the color ramp type.

Implements QgsColorRamp.

Definition at line 510 of file qgscolorramp.h.

double QgsPresetSchemeColorRamp::value ( int index ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 858 of file qgscolorramp.cpp.

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

/build/qgis-3.4.15+24xenial/src/core/qgscolorramp.h
/build/qgis-3.4.15+24xenial/src/core/qgscolorramp.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation