vtkQtChartColors Class Reference

#include <vtkQtChartColors.h>

List of all members.

---

Detailed Description

The vtkQtChartColors class stores a list of colors.

Definition at line 36 of file vtkQtChartColors.h.

Public Types
enum	ColorScheme {   Spectrum = 0, Warm, Cool, Blues,   WildFlower, Citrus, Custom }
Public Member Functions
	vtkQtChartColors (ColorScheme scheme=Spectrum)
	Creates a chart colors instance.
	vtkQtChartColors (const vtkQtChartColors &other)
	Makes a copy of another chart colors instance.
	~vtkQtChartColors ()
vtkQtChartColors &	operator= (const vtkQtChartColors &other)
	Makes a copy of another chart colors instance.
ColorScheme	getColorScheme () const
	Gets the current color scheme.
void	setColorScheme (ColorScheme scheme)
	Sets the color scheme.
int	getNumberOfColors () const
	Gets the number of colors in the color list.
QColor	getColor (int index) const
	Gets the color for the given index.
void	setColor (int index, const QColor &color)
	Sets the color for the given index.
void	clearColors ()
	Clears the list of colors.
void	addColor (const QColor &color)
	Adds a color to the list of colors.
void	insertColor (int index, const QColor &color)
	Inserts a new color into the list of colors.
void	removeColor (int index)
	Removes the color for the given index.
Static Public Member Functions
static QColor	lighter (const QColor &color, float factor=0.7)
	Creates a lighter color from the given color.
static QColor	interpolateHsv (const QColor &color1, const QColor &color2, float fraction)
	Gets a new color between the given colors in hsv space.
static QColor	interpolateRgb (const QColor &color1, const QColor &color2, float fraction)
	Gets a new color between the given colors in rgb space.

---

Member Enumeration Documentation

enum vtkQtChartColors::ColorScheme

Enumerator:

Spectrum	7 different hues.
Warm	6 warm colors (red to yellow).
Cool	7 cool colors (green to purple).
Blues	7 different blues.
WildFlower	7 colors from blue to magenta.
Citrus	6 colors from green to orange.
Custom	User specified color scheme.

Definition at line 39 of file vtkQtChartColors.h.

---

Constructor & Destructor Documentation

vtkQtChartColors::vtkQtChartColors

(

ColorScheme

scheme = Spectrum

)

Creates a chart colors instance.

Parameters:

scheme

The initial color scheme.

vtkQtChartColors::vtkQtChartColors

(

const vtkQtChartColors &

other

)

Makes a copy of another chart colors instance.

Parameters:

other

The chart colors to copy.

vtkQtChartColors::~vtkQtChartColors

(

)

---

Member Function Documentation

vtkQtChartColors& vtkQtChartColors::operator=

(

const vtkQtChartColors &

other

)

Makes a copy of another chart colors instance.

Parameters:

other

The chart colors to copy.

Returns:

A reference to the object being assigned.

ColorScheme vtkQtChartColors::getColorScheme

(

)

const [inline]

Gets the current color scheme.

Returns:

The current color scheme.

Definition at line 73 of file vtkQtChartColors.h.

void vtkQtChartColors::setColorScheme

(

ColorScheme

scheme

)

Sets the color scheme.

The color scheme will automatically be changed to Custom if the color list is modified.

Parameters:

scheme

The new color scheme.

int vtkQtChartColors::getNumberOfColors

(

)

const

Gets the number of colors in the color list.

Returns:

The number of colors in the color list.

QColor vtkQtChartColors::getColor

(

int

index

)

const

Gets the color for the given index.

Returns:

The color for the given index.

void vtkQtChartColors::setColor	(	int	index,
		const QColor &	color
	)

Sets the color for the given index.

This method does nothing if the index is out of range.

Parameters:

	index	Which color to modify.
	color	The new color.

void vtkQtChartColors::clearColors

(

)

Clears the list of colors.

void vtkQtChartColors::addColor

(

const QColor &

color

)

Adds a color to the list of colors.

Parameters:

color

The new color to add.

void vtkQtChartColors::insertColor	(	int	index,
		const QColor &	color
	)

Inserts a new color into the list of colors.

Parameters:

	index	Where to insert the new color.
	color	The new color to insert.

void vtkQtChartColors::removeColor

(

int

index

)

Removes the color for the given index.

Parameters:

index

Which color to remove from the list.

static QColor vtkQtChartColors::lighter	(	const QColor &	color,
		float	factor = 0.7
	)			[static]

Creates a lighter color from the given color.

The QColor::light method does not work for black. This function uses a 3D equation in rgb space to compute the lighter color, which works for all colors including black. the factor determines how light the new color will be. The factor is used to find the point between the current color and white.

Parameters:

	color	The starting color.
	factor	A percentage (0.0 to 1.0) of the distance from the given color to white.

Returns:

The new lighter color.

static QColor vtkQtChartColors::interpolateHsv	(	const QColor &	color1,
		const QColor &	color2,
		float	fraction
	)			[static]

Gets a new color between the given colors in hsv space.

The interpolation does not wrap around in the hue component.

Parameters:

	color1	The first color.
	color2	The last color.
	fraction	The fraction (0.0 to 1.0) of the distance from color1 to color2.

Returns:

The interpolated color.

static QColor vtkQtChartColors::interpolateRgb	(	const QColor &	color1,
		const QColor &	color2,
		float	fraction
	)			[static]

Gets a new color between the given colors in rgb space.

Parameters:

	color1	The first color.
	color2	The last color.
	fraction	The fraction (0.0 to 1.0) of the distance from color1 to color2.

Returns:

The interpolated color.

---

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

• dox/GUISupport/Qt/Chart/vtkQtChartColors.h