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

#include <qgscolorramp.h>

Inheritance diagram for QgsLimitedRandomColorRamp:

Public Member Functions
	QgsLimitedRandomColorRamp (int count=DEFAULT_RANDOM_COUNT, int hueMin=DEFAULT_RANDOM_HUE_MIN, int hueMax=DEFAULT_RANDOM_HUE_MAX, int satMin=DEFAULT_RANDOM_SAT_MIN, int satMax=DEFAULT_RANDOM_SAT_MAX, int valMin=DEFAULT_RANDOM_VAL_MIN, int valMax=DEFAULT_RANDOM_VAL_MAX)
	Constructor for QgsLimitedRandomColorRamp. More...

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

int	hueMax () const
	Returns the maximum hue for generated colors. More...

int	hueMin () const
	Returns the minimum hue for generated colors. More...

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

int	satMax () const
	Returns the maximum saturation for generated colors. More...

int	satMin () const
	Returns the minimum saturation for generated colors. More...

void	setCount (int val)
	Sets the number of colors contained in the ramp. More...

void	setHueMax (int val)
	Sets the maximum hue for generated colors. More...

void	setHueMin (int val)
	Sets the minimum hue for generated colors. More...

void	setSatMax (int val)
	Sets the maximum saturation for generated colors. More...

void	setSatMin (int val)
	Sets the minimum saturation for generated colors. More...

void	setValMax (int val)
	Sets the maximum value for generated colors. More...

void	setValMin (int val)
	Sets the minimum value for generated colors. More...

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

void	updateColors ()
	Must be called after changing the properties of the color ramp to regenerate the list of random colors. More...

int	valMax () const
	Returns the maximum value for generated colors. More...

int	valMin () const
	Returns the minimum value for generated colors. 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

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

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

static QList< QColor >	randomColors (int count, int hueMax=DEFAULT_RANDOM_HUE_MAX, int hueMin=DEFAULT_RANDOM_HUE_MIN, int satMax=DEFAULT_RANDOM_SAT_MAX, int satMin=DEFAULT_RANDOM_SAT_MIN, int valMax=DEFAULT_RANDOM_VAL_MAX, int valMin=DEFAULT_RANDOM_VAL_MIN)
	Gets a list of random colors. More...

Protected Attributes
QList< QColor >	mColors

int	mCount

int	mHueMax

int	mHueMin

int	mSatMax

int	mSatMin

int	mValMax

int	mValMin

Detailed Description

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

Since: QGIS 3.0

Definition at line 283 of file qgscolorramp.h.

Constructor & Destructor Documentation

QgsLimitedRandomColorRamp::QgsLimitedRandomColorRamp	(	int	count = `DEFAULT_RANDOM_COUNT`,
		int	hueMin = `DEFAULT_RANDOM_HUE_MIN`,
		int	hueMax = `DEFAULT_RANDOM_HUE_MAX`,
		int	satMin = `DEFAULT_RANDOM_SAT_MIN`,
		int	satMax = `DEFAULT_RANDOM_SAT_MAX`,
		int	valMin = `DEFAULT_RANDOM_VAL_MIN`,
		int	valMax = `DEFAULT_RANDOM_VAL_MAX`
	)

Constructor for QgsLimitedRandomColorRamp.

Parameters

count	number of colors in ramp
hueMin	minimum hue
hueMax	maximum hue
satMin	minimum saturation
satMax	maximum saturation
valMin	minimum color value
valMax	maximum color value

Definition at line 307 of file qgscolorramp.cpp.

Member Function Documentation

QgsLimitedRandomColorRamp * QgsLimitedRandomColorRamp::clone ( ) const

overridevirtual

Creates a clone of the color ramp.

Implements QgsColorRamp.

Definition at line 356 of file qgscolorramp.cpp.

QColor QgsLimitedRandomColorRamp::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 342 of file qgscolorramp.cpp.

int QgsLimitedRandomColorRamp::count ( ) const

inlineoverridevirtual

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

Implements QgsColorRamp.

Definition at line 315 of file qgscolorramp.h.

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

static

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

Parameters

properties color ramp properties

See also: properties()

Definition at line 317 of file qgscolorramp.cpp.

int QgsLimitedRandomColorRamp::hueMax ( ) const

inline

Returns the maximum hue for generated colors.

See also: setHueMax()

Definition at line 342 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::hueMin ( ) const

inline

Returns the minimum hue for generated colors.

See also: setHueMin()

Definition at line 336 of file qgscolorramp.h.

QgsStringMap QgsLimitedRandomColorRamp::properties ( ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 361 of file qgscolorramp.cpp.

QList< QColor > QgsLimitedRandomColorRamp::randomColors	(	int	count,
		int	hueMax = `DEFAULT_RANDOM_HUE_MAX`,
		int	hueMin = `DEFAULT_RANDOM_HUE_MIN`,
		int	satMax = `DEFAULT_RANDOM_SAT_MAX`,
		int	satMin = `DEFAULT_RANDOM_SAT_MIN`,
		int	valMax = `DEFAULT_RANDOM_VAL_MAX`,
		int	valMin = `DEFAULT_RANDOM_VAL_MIN`
	)

static

Gets a list of random colors.

Since: QGIS 2.4

Definition at line 375 of file qgscolorramp.cpp.

int QgsLimitedRandomColorRamp::satMax ( ) const

inline

Returns the maximum saturation for generated colors.

See also: setSatMax()

Definition at line 354 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::satMin ( ) const

inline

Returns the minimum saturation for generated colors.

See also: setSatMin()

Definition at line 348 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setCount ( int val )

inline

Sets the number of colors contained in the ramp.

Definition at line 371 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setHueMax ( int val )

inline

Sets the maximum hue for generated colors.

See also: hueMax()

Definition at line 383 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setHueMin ( int val )

inline

Sets the minimum hue for generated colors.

See also: hueMin()

Definition at line 377 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setSatMax ( int val )

inline

Sets the maximum saturation for generated colors.

See also: satMax()

Definition at line 395 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setSatMin ( int val )

inline

Sets the minimum saturation for generated colors.

See also: satMin()

Definition at line 389 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setValMax ( int val )

inline

Sets the maximum value for generated colors.

See also: valMax()

Definition at line 407 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::setValMin ( int val )

inline

Sets the minimum value for generated colors.

See also: valMin()

Definition at line 401 of file qgscolorramp.h.

QString QgsLimitedRandomColorRamp::type ( ) const

inlineoverridevirtual

Returns a string representing the color ramp type.

Implements QgsColorRamp.

Definition at line 312 of file qgscolorramp.h.

void QgsLimitedRandomColorRamp::updateColors ( )

Must be called after changing the properties of the color ramp to regenerate the list of random colors.

Definition at line 408 of file qgscolorramp.cpp.

int QgsLimitedRandomColorRamp::valMax ( ) const

inline

Returns the maximum value for generated colors.

See also: setValMax()

Definition at line 366 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::valMin ( ) const

inline

Returns the minimum value for generated colors.

See also: setValMin()

Definition at line 360 of file qgscolorramp.h.

double QgsLimitedRandomColorRamp::value ( int index ) const

overridevirtual

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

Implements QgsColorRamp.

Definition at line 335 of file qgscolorramp.cpp.

Member Data Documentation

QList<QColor> QgsLimitedRandomColorRamp::mColors

protected

Definition at line 417 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mCount

protected

Definition at line 410 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mHueMax

protected

Definition at line 412 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mHueMin

protected

Definition at line 411 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mSatMax

protected

Definition at line 414 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mSatMin

protected

Definition at line 413 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mValMax

protected

Definition at line 416 of file qgscolorramp.h.

int QgsLimitedRandomColorRamp::mValMin

protected

Definition at line 415 of file qgscolorramp.h.

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

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation