The QColor class provides colors based on RGB, HSV or CMYK values. More...

#include <qcolor.h>

Collaboration diagram for QColor:

Public Types
enum	Spec { Invalid , Rgb , Hsv , Cmyk , Hsl , ExtendedRgb }
	The type of color specified, either RGB, extended RGB, HSV, CMYK or HSL. More...

enum	NameFormat { HexRgb , HexArgb }
	How to format the output of the name() function. More...

Public Member Functions
constexpr	QColor () noexcept
	Constructs an invalid color with the RGB value (0, 0, 0).

	QColor (Qt::GlobalColor color) noexcept
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Constructs a new color with a color value of color.

constexpr	QColor (int r, int g, int b, int a=255) noexcept
	Constructs a color with the RGB value r, g, b, and the alpha-channel (transparency) value of a.

	QColor (QRgb rgb) noexcept
	Constructs a color with the value color.

	QColor (QRgba64 rgba64) noexcept

	QColor (const QString &name)
	Constructs a named color in the same way as setNamedColor() using the given name.

	QColor (QStringView name)

	QColor (const char *aname)
	Constructs a named color in the same way as setNamedColor() using the given name.

	QColor (QLatin1StringView name)
	Constructs a named color in the same way as setNamedColor() using the given name.

	QColor (Spec spec) noexcept

QColor &	operator= (Qt::GlobalColor color) noexcept
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Assigns a copy of color and returns a reference to this color.

bool	isValid () const noexcept
	Returns `true` if the color is valid; otherwise returns `false`.

QString	name (NameFormat format=HexRgb) const

Spec	spec () const noexcept
	Returns how the color was specified.

int	alpha () const noexcept
	Returns the alpha color component of this color.

void	setAlpha (int alpha)
	Sets the alpha of this color to alpha.

float	alphaF () const noexcept
	Returns the alpha color component of this color.

void	setAlphaF (float alpha)
	Sets the alpha of this color to alpha.

int	red () const noexcept
	Returns the red color component of this color.

int	green () const noexcept
	Returns the green color component of this color.

int	blue () const noexcept
	Returns the blue color component of this color.

void	setRed (int red)
	Sets the red color component of this color to red.

void	setGreen (int green)
	Sets the green color component of this color to green.

void	setBlue (int blue)
	Sets the blue color component of this color to blue.

float	redF () const noexcept
	Returns the red color component of this color.

float	greenF () const noexcept
	Returns the green color component of this color.

float	blueF () const noexcept
	Returns the blue color component of this color.

void	setRedF (float red)
	Sets the red color component of this color to red.

void	setGreenF (float green)
	Sets the green color component of this color to green.

void	setBlueF (float blue)
	Sets the blue color component of this color to blue.

void	getRgb (int r, int g, int b, int a=nullptr) const
	Sets the contents pointed to by r, g, b, and a, to the red, green, blue, and alpha-channel (transparency) components of the color's RGB value.

void	setRgb (int r, int g, int b, int a=255)
	Sets the RGB value to r, g, b and the alpha value to a.

void	getRgbF (float r, float g, float b, float a=nullptr) const
	Sets the contents pointed to by r, g, b, and a, to the red, green, blue, and alpha-channel (transparency) components of the color's RGB value.

void	setRgbF (float r, float g, float b, float a=1.0)
	Sets the color channels of this color to r (red), g (green), b (blue) and a (alpha, transparency).

QRgba64	rgba64 () const noexcept

void	setRgba64 (QRgba64 rgba) noexcept

QRgb	rgba () const noexcept
	Returns the RGB value of the color, including its alpha.

void	setRgba (QRgb rgba) noexcept
	Sets the RGB value to rgba, including its alpha.

QRgb	rgb () const noexcept
	Returns the RGB value of the color.

void	setRgb (QRgb rgb) noexcept
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the RGB value to rgb.

int	hue () const noexcept
	Returns the HSV hue color component of this color.

int	saturation () const noexcept
	Returns the HSV saturation color component of this color.

int	hsvHue () const noexcept
	Returns the HSV hue color component of this color.

int	hsvSaturation () const noexcept
	Returns the HSV saturation color component of this color.

int	value () const noexcept
	Returns the value color component of this color.

float	hueF () const noexcept
	Returns the HSV hue color component of this color.

float	saturationF () const noexcept
	Returns the HSV saturation color component of this color.

float	hsvHueF () const noexcept
	Returns the hue color component of this color.

float	hsvSaturationF () const noexcept
	Returns the HSV saturation color component of this color.

float	valueF () const noexcept
	Returns the value color component of this color.

void	getHsv (int h, int s, int v, int a=nullptr) const
	Sets the contents pointed to by h, s, v, and a, to the hue, saturation, value, and alpha-channel (transparency) components of the color's HSV value.

void	setHsv (int h, int s, int v, int a=255)
	Sets a HSV color value; h is the hue, s is the saturation, v is the value and a is the alpha component of the HSV color.

void	getHsvF (float h, float s, float v, float a=nullptr) const
	Sets the contents pointed to by h, s, v, and a, to the hue, saturation, value, and alpha-channel (transparency) components of the color's HSV value.

void	setHsvF (float h, float s, float v, float a=1.0)
	Sets a HSV color value; h is the hue, s is the saturation, v is the value and a is the alpha component of the HSV color.

int	cyan () const noexcept
	Returns the cyan color component of this color.

int	magenta () const noexcept
	Returns the magenta color component of this color.

int	yellow () const noexcept
	Returns the yellow color component of this color.

int	black () const noexcept
	Returns the black color component of this color.

float	cyanF () const noexcept
	Returns the cyan color component of this color.

float	magentaF () const noexcept
	Returns the magenta color component of this color.

float	yellowF () const noexcept
	Returns the yellow color component of this color.

float	blackF () const noexcept
	Returns the black color component of this color.

void	getCmyk (int c, int m, int y, int k, int *a=nullptr) const
	Sets the contents pointed to by c, m, y, k, and a, to the cyan, magenta, yellow, black, and alpha-channel (transparency) components of the color's CMYK value.

void	setCmyk (int c, int m, int y, int k, int a=255)
	Sets the color to CMYK values, c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

void	getCmykF (float c, float m, float y, float k, float *a=nullptr) const
	Sets the contents pointed to by c, m, y, k, and a, to the cyan, magenta, yellow, black, and alpha-channel (transparency) components of the color's CMYK value.

void	setCmykF (float c, float m, float y, float k, float a=1.0)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the color to CMYK values, c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

int	hslHue () const noexcept

int	hslSaturation () const noexcept

int	lightness () const noexcept

float	hslHueF () const noexcept

float	hslSaturationF () const noexcept

float	lightnessF () const noexcept

void	getHsl (int h, int s, int l, int a=nullptr) const

void	setHsl (int h, int s, int l, int a=255)

void	getHslF (float h, float s, float l, float a=nullptr) const

void	setHslF (float h, float s, float l, float a=1.0)

QColor	toRgb () const noexcept
	Create and returns an RGB QColor based on this color.

QColor	toHsv () const noexcept
	Creates and returns an HSV QColor based on this color.

QColor	toCmyk () const noexcept
	Creates and returns a CMYK QColor based on this color.

QColor	toHsl () const noexcept
	Creates and returns an HSL QColor based on this color.

QColor	toExtendedRgb () const noexcept
	Create and returns an extended RGB QColor based on this color.

QColor	convertTo (Spec colorSpec) const noexcept
	Creates a copy of this color in the format specified by colorSpec.

QColor	lighter (int f=150) const noexcept

QColor	darker (int f=200) const noexcept

bool	operator== (const QColor &c) const noexcept
	Returns `true` if this color has the same color specification and component values as color; otherwise returns `false`.

bool	operator!= (const QColor &c) const noexcept
	Returns `true` if this color has different color specification or component values from color; otherwise returns `false`.

	operator QVariant () const
	Returns the color as a QVariant.

Static Public Member Functions
static QColor	fromString (QAnyStringView name) noexcept

static QStringList	colorNames ()
	Returns a QStringList containing the color names Qt knows about.

static QColor	fromRgb (QRgb rgb) noexcept
	Static convenience function that returns a QColor constructed from the given QRgb value rgb.

static QColor	fromRgba (QRgb rgba) noexcept
	Static convenience function that returns a QColor constructed from the given QRgb value rgba.

static QColor	fromRgb (int r, int g, int b, int a=255)
	Static convenience function that returns a QColor constructed from the RGB color values, r (red), g (green), b (blue), and a (alpha-channel, i.e.

static QColor	fromRgbF (float r, float g, float b, float a=1.0)
	Static convenience function that returns a QColor constructed from the RGB color values, r (red), g (green), b (blue), and a (alpha-channel, i.e.

static QColor	fromRgba64 (ushort r, ushort g, ushort b, ushort a=USHRT_MAX) noexcept

static QColor	fromRgba64 (QRgba64 rgba) noexcept

static QColor	fromHsv (int h, int s, int v, int a=255)
	Static convenience function that returns a QColor constructed from the HSV color values, h (hue), s (saturation), v (value), and a (alpha-channel, i.e.

static QColor	fromHsvF (float h, float s, float v, float a=1.0)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Static convenience function that returns a QColor constructed from the HSV color values, h (hue), s (saturation), v (value), and a (alpha-channel, i.e.

static QColor	fromCmyk (int c, int m, int y, int k, int a=255)
	Static convenience function that returns a QColor constructed from the given CMYK color values: c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

static QColor	fromCmykF (float c, float m, float y, float k, float a=1.0)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Static convenience function that returns a QColor constructed from the given CMYK color values: c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

static QColor	fromHsl (int h, int s, int l, int a=255)

static QColor	fromHslF (float h, float s, float l, float a=1.0)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

static bool	isValidColorName (QAnyStringView) noexcept

Friends
class	QColormap

Q_GUI_EXPORT QDataStream &	operator<< (QDataStream &, const QColor &)
	Writes the color to the stream.

Q_GUI_EXPORT QDataStream &	operator>> (QDataStream &, QColor &)
	Reads the color from the stream.

Related Symbols
(Note that these are not member symbols.)
QDataStream &	operator<< (QDataStream &stream, const QColor &color)
	Writes the color to the stream.

QDataStream &	operator>> (QDataStream &stream, QColor &color)
	Reads the color from the stream.

int	qRed (QRgb rgb)
	Returns the red component of the ARGB quadruplet rgb.

int	qGreen (QRgb rgb)
	Returns the green component of the ARGB quadruplet rgb.

int	qBlue (QRgb rgb)
	Returns the blue component of the ARGB quadruplet rgb.

int	qAlpha (QRgb rgba)
	Returns the alpha component of the ARGB quadruplet rgba.

QRgb	qRgb (int r, int g, int b)
	Returns the ARGB quadruplet (255, {r}, {g}, {b}).

QRgb	qRgba (int r, int g, int b, int a)
	Returns the ARGB quadruplet ({a}, {r}, {g}, {b}).

int	qGray (int r, int g, int b)
	Returns a gray value (0 to 255) from the (r, g, b) triplet.

int	qGray (QRgb rgb)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QRgb	qPremultiply (QRgb rgb)

QRgb	qUnpremultiply (QRgb rgb)

	QRgb
	An ARGB quadruplet on the format #AARRGGBB, equivalent to an unsigned int.

Detailed Description

The QColor class provides colors based on RGB, HSV or CMYK values.

\inmodule QtGui

A color is normally specified in terms of RGB (red, green, and blue) components, but it is also possible to specify it in terms of HSV (hue, saturation, and value) and CMYK (cyan, magenta, yellow and black) components. In addition a color can be specified using a color name. The color name can be any of the SVG 1.0 color names.

\table \header

RGB
HSV
CMYK \row
\inlineimage qcolor-rgb.png
\inlineimage qcolor-hsv.png
\inlineimage qcolor-cmyk.png \endtable

The QColor constructor creates the color based on RGB values. To create a QColor based on either HSV or CMYK values, use the toHsv() and toCmyk() functions respectively. These functions return a copy of the color using the desired format. In addition the static fromRgb(), fromHsv() and fromCmyk() functions create colors from the specified values. Alternatively, a color can be converted to any of the three formats using the convertTo() function (returning a copy of the color in the desired format), or any of the setRgb(), setHsv() and setCmyk() functions altering this color's format. The spec() function tells how the color was specified.

A color can be set by passing an RGB string (such as "#112233"), or an ARGB string (such as "#ff112233") or a color name (such as "blue"), to the fromString() function. The color names are taken from the SVG 1.0 color names. The name() function returns the name of the color in the format "#RRGGBB". Colors can also be set using setRgb(), setHsv() and setCmyk(). To get a lighter or darker color use the lighter() and darker() functions respectively.

The isValid() function indicates whether a QColor is legal at all. For example, a RGB color with RGB values out of range is illegal. For performance reasons, QColor mostly disregards illegal colors, and for that reason, the result of using an invalid color is undefined.

The color components can be retrieved individually, e.g with red(), hue() and cyan(). The values of the color components can also be retrieved in one go using the getRgb(), getHsv() and getCmyk() functions. Using the RGB color model, the color components can in addition be accessed with rgb().

There are several related non-members: QRgb is a typdef for an unsigned int representing the RGB value triplet (r, g, b). Note that it also can hold a value for the alpha-channel (for more information, see the \l {QColor::Alpha-Blended Drawing}{Alpha-Blended Drawing} section). The qRed(), qBlue() and qGreen() functions return the respective component of the given QRgb value, while the qRgb() and qRgba() functions create and return the QRgb triplet based on the given component values. Finally, the qAlpha() function returns the alpha component of the provided QRgb, and the qGray() function calculates and return a gray value based on the given value.

QColor is platform and device independent. The QColormap class maps the color to the hardware.

For more information about painting in general, see the \l{Paint System} documentation.

Definition at line 30 of file qcolor.h.

Member Enumeration Documentation

◆ NameFormat

enum QColor::NameFormat

How to format the output of the name() function.

\value HexRgb #RRGGBB A "#" character followed by three two-digit hexadecimal numbers (i.e. {#RRGGBB}). \value HexArgb #AARRGGBB A "#" character followed by four two-digit hexadecimal numbers (i.e. {#AARRGGBB}).

See also: name()

Enumerator
HexRgb
HexArgb

Definition at line 36 of file qcolor.h.

◆ Spec

enum QColor::Spec

The type of color specified, either RGB, extended RGB, HSV, CMYK or HSL.

\value Rgb \value Hsv \value Cmyk \value Hsl \value ExtendedRgb \value Invalid

See also: spec(), convertTo()

Enumerator
Invalid
Rgb
Hsv
Cmyk
Hsl
ExtendedRgb

Definition at line 35 of file qcolor.h.

Constructor & Destructor Documentation

◆ QColor() [1/10]

QColor::QColor ( )

inlineconstexprnoexcept

Constructs an invalid color with the RGB value (0, 0, 0).

An invalid color is a color that is not properly set up for the underlying window system.

The alpha value of an invalid color is unspecified.

See also: isValid()

Definition at line 38 of file qcolor.h.

Referenced by fromCmyk(), fromCmykF(), fromHsl(), fromHslF(), fromHsv(), fromHsvF(), fromRgb(), and fromRgbF().

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◆ QColor() [2/10]

QColor::QColor ( Qt::GlobalColor color )

noexcept

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Constructs a new color with a color value of color.

See also: isValid(), {QColor::Predefined Colors}{Predefined Colors}

Definition at line 655 of file qcolor.cpp.

References qAlpha(), qBlue(), qGreen(), qRed(), QRGB, QRgb, and QRGBA.

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◆ QColor() [3/10]

QColor::QColor	(	int	r,
		int	g,
		int	b,
		int	a = 255 )

inlineconstexprnoexcept

Constructs a color with the RGB value r, g, b, and the alpha-channel (transparency) value of a.

The color is left invalid if any of the arguments are invalid.

See also: setRgba(), isValid()

Definition at line 41 of file qcolor.h.

◆ QColor() [4/10]

QColor::QColor ( QRgb color )

noexcept

Constructs a color with the value color.

The alpha component is ignored and set to solid.

See also: fromRgb(), isValid()

Definition at line 730 of file qcolor.cpp.

References qBlue(), qGreen(), and qRed().

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◆ QColor() [5/10]

QColor::QColor ( QRgba64 rgba64 )

noexcept

Since: 5.6

Constructs a color with the value rgba64.

See also: fromRgba64()

Definition at line 748 of file qcolor.cpp.

◆ QColor() [6/10]

QColor::QColor ( const QString & name )

inline

Constructs a named color in the same way as setNamedColor() using the given name.

The color is left invalid if the name cannot be parsed.

See also: setNamedColor(), name(), isValid()

Definition at line 279 of file qcolor.h.

◆ QColor() [7/10]

QColor::QColor ( QStringView name )

inlineexplicit

Definition at line 276 of file qcolor.h.

◆ QColor() [8/10]

QColor::QColor ( const char * name )

inline

Constructs a named color in the same way as setNamedColor() using the given name.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

See also: setNamedColor(), name(), isValid()

Definition at line 282 of file qcolor.h.

◆ QColor() [9/10]

QColor::QColor ( QLatin1StringView name )

inline

Constructs a named color in the same way as setNamedColor() using the given name.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.8

See also: setNamedColor(), name(), isValid()

Definition at line 273 of file qcolor.h.

◆ QColor() [10/10]

QColor::QColor ( Spec spec )

noexcept

Constructs a color with the given spec.

This function is primarily present to avoid that QColor::Invalid becomes a valid color by accident.

Definition at line 762 of file qcolor.cpp.

References Invalid.

Member Function Documentation

◆ alpha()

int QColor::alpha ( ) const

noexcept

Returns the alpha color component of this color.

See also: setAlpha(), alphaF(), {QColor::Alpha-Blended Drawing}{Alpha-Blended Drawing}

Definition at line 1466 of file qcolor.cpp.

References castF16(), ExtendedRgb, qRound(), and qt_div_257().

Referenced by QPdfEnginePrivate::addBrushPattern(), QQuickTextNodeEngine::addToSceneGraph(), cgColorForQColor(), QQuick3DParticleEmitter::emitParticle(), QX11PlatformPixmap::fill(), QuickTestResult::fuzzyCompare(), QSGSoftwareInternalRectangleNode::isOpaque(), QStaticTextPrivate::paintText(), QQuickColorImage::pixmapChange(), QWizardPrivate::recreateLayout(), setBlue(), QQuickPen::setColor(), QSGFlatColorMaterial::setColor(), setGreen(), QQuickPen::setPixelAligned(), setRed(), QQuickPen::setWidth(), QSGSoftwareRenderableNode::update(), QBlitterPaintEnginePrivate::updateBrushState(), QSGBasicInternalRectangleNode::updateGeometry(), QSGDefaultInternalRectangleNode::updateMaterialBlending(), QX11PaintEngine::updatePen(), QDeclarativeCircleMapItemPrivateCPU::updatePolish(), QDeclarativePolygonMapItemPrivateCPU::updatePolish(), and QDeclarativeRectangleMapItemPrivateCPU::updatePolish().

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◆ alphaF()

float QColor::alphaF ( ) const

noexcept

Returns the alpha color component of this color.

See also: setAlphaF(), alpha(), {QColor::Alpha-Blended Drawing}{Alpha-Blended Drawing}

Definition at line 1497 of file qcolor.cpp.

References castF16(), and ExtendedRgb.

Referenced by QOpenGLWidgetPaintDevicePrivate::beginPaint(), QQC2_NAMESPACE::QMacStyle::drawPrimitive(), QMacStyle::drawPrimitive(), QQuick3DParticle::opacity(), qt_premultiplyColor(), setBlueF(), setGreenF(), setRedF(), QSpanData::setup(), QQuick3DSceneRenderer::synchronize(), QQuickColorProvider::tint(), QQuickMultiEffectPrivate::updateColorizationColor(), QQuickMultiEffectPrivate::updateShadowColor(), and QT_BEGIN_NAMESPACE::QSGCurveFillMaterialShader::updateUniformData().

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◆ black()

int QColor::black ( ) const

noexcept

Returns the black color component of this color.

See also: blackF(), getCmyk(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1951 of file qcolor.cpp.

References black(), Cmyk, Invalid, qt_div_257(), and toCmyk().

Referenced by black().

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◆ blackF()

float QColor::blackF ( ) const

noexcept

Returns the black color component of this color.

See also: black(), getCmykF(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1999 of file qcolor.cpp.

References blackF(), Cmyk, Invalid, and toCmyk().

Referenced by blackF().

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◆ blue()

int QColor::blue ( ) const

noexcept

Returns the blue color component of this color.

See also: setBlue(), blueF(), getRgb()

Definition at line 1583 of file qcolor.cpp.

References blue(), Invalid, qt_div_257(), Rgb, and toRgb().

Referenced by QQuickColorDialogImpl::blue(), QQuickColorInputs::blue(), blue(), cgColorForQColor(), QQC2::QWindowsXPStyle::drawControl(), QWindowsVistaStyle::drawControl(), QQuick3DParticleEmitter::emitParticle(), QuickTestResult::fuzzyCompare(), QCommonStyle::generatedIconPixmap(), QQC2::QCommonStyle::generatedIconPixmap(), QCommandLinkButtonPrivate::mergedColors(), QQuickFusionStyle::mergedColors(), mixColors(), QStaticTextPrivate::paintText(), QCoreGraphicsPaintEnginePrivate::setFillBrush(), setGreen(), and setRed().

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◆ blueF()

float QColor::blueF ( ) const

noexcept

Returns the blue color component of this color.

See also: setBlueF(), blue(), getRgbF()

Definition at line 1675 of file qcolor.cpp.

References blueF(), castF16(), ExtendedRgb, Invalid, Rgb, and toRgb().

Referenced by blueF(), QQC2_NAMESPACE::QMacStyle::drawPrimitive(), QMacStyle::drawPrimitive(), setGreenF(), setRedF(), QQuick3DSceneRenderer::synchronize(), QQuickColorProvider::tint(), QQuickMultiEffectPrivate::updateColorizationColor(), QQuick3DRenderLayerHelpers::updateLayerNodeHelper(), QQuickMultiEffectPrivate::updateShadowColor(), and QT_BEGIN_NAMESPACE::QSGCurveFillMaterialShader::updateUniformData().

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◆ colorNames()

QStringList QColor::colorNames ( )

static

Returns a QStringList containing the color names Qt knows about.

See also: {QColor::Predefined Colors}{Predefined Colors}

Definition at line 1002 of file qcolor.cpp.

References get_colornames().

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◆ convertTo()

QColor QColor::convertTo ( QColor::Spec colorSpec ) const

noexcept

Creates a copy of this color in the format specified by colorSpec.

See also: spec(), toCmyk(), toHsv(), toRgb(), isValid()

Definition at line 2336 of file qcolor.cpp.

References Invalid.

◆ cyan()

int QColor::cyan ( ) const

noexcept

Returns the cyan color component of this color.

See also: cyanF(), getCmyk(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1914 of file qcolor.cpp.

References Cmyk, cyan(), Invalid, qt_div_257(), and toCmyk().

Referenced by cyan().

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◆ cyanF()

float QColor::cyanF ( ) const

noexcept

Returns the cyan color component of this color.

See also: cyan(), getCmykF(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1963 of file qcolor.cpp.

References Cmyk, cyanF(), Invalid, and toCmyk().

Referenced by cyanF().

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◆ darker()

QColor QColor::darker ( int factor = 200 ) const

noexcept

Since: 4.3

Returns a darker (or lighter) color, but does not change this object.

If the factor is greater than 100, this functions returns a darker color. Setting factor to 300 returns a color that has one-third the brightness. If the factor is less than 100, the return color is lighter, but we recommend using the lighter() function for this purpose. If the factor is 0 or negative, the return value is unspecified.

The function converts the current color to HSV, divides the value (V) component by factor and converts the color back to it's original color spec.

See also: lighter(), isValid()

Definition at line 2857 of file qcolor.cpp.

Referenced by QQuickColorProvider::darker(), QQC2::QWindowsXPStyle::drawControl(), QWindowsVistaStyle::drawControl(), QQC2::QStyleHelper::drawDial(), QQC2_NAMESPACE::QMacStyle::drawPrimitive(), QMacStyle::drawPrimitive(), QQuickFusionDial::paint(), QWindowsVistaStyle::polish(), Q_APPLICATION_STATIC(), qt_accentColor(), qt_fusionPalette(), qt_mac_createSystemPalette(), QGtk3Storage::standardPalette(), QStyle::standardPalette(), QQC2::QStyle::standardPalette(), toolTipPalette(), and QAndroidPlatformTheme::updateStyle().

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◆ fromCmyk()

QColor QColor::fromCmyk	(	int	c,
		int	m,
		int	y,
		int	k,
		int	a = 255 )

static

Static convenience function that returns a QColor constructed from the given CMYK color values: c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

transparency).

All the values must be in the range 0-255.

See also: toCmyk(), fromCmykF(), isValid(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2741 of file qcolor.cpp.

References QColor(), Cmyk, and qWarning.

Referenced by QCmyk32::toColor().

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◆ fromCmykF()

QColor QColor::fromCmykF	(	float	c,
		float	m,
		float	y,
		float	k,
		float	a = 1.0 )

static

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Static convenience function that returns a QColor constructed from the given CMYK color values: c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

transparency).

All the values must be in the range 0.0-1.0.

See also: toCmyk(), fromCmyk(), isValid(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2773 of file qcolor.cpp.

References QColor(), Cmyk, qRound(), and qWarning.

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◆ fromHsl()

QColor QColor::fromHsl	(	int	h,
		int	s,
		int	l,
		int	a = 255 )

static

Since: 4.6

Static convenience function that returns a QColor constructed from the HSV color values, h (hue), s (saturation), l (lightness), and a (alpha-channel, i.e. transparency).

The value of s, l, and a must all be in the range 0-255; the value of h must be in the range 0-359.

See also: toHsl(), fromHslF(), isValid(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 2562 of file qcolor.cpp.

References QColor(), Hsl, and qWarning.

Referenced by parseColorValue(), and qt_color_from_string().

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◆ fromHslF()

QColor QColor::fromHslF	(	float	h,
		float	s,
		float	l,
		float	a = 1.0 )

static

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 4.6

Static convenience function that returns a QColor constructed from the HSV color values, h (hue), s (saturation), l (lightness), and a (alpha-channel, i.e. transparency).

All the values must be in the range 0.0-1.0.

See also: toHsl(), fromHsl(), isValid(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 2594 of file qcolor.cpp.

References QColor(), Hsl, qRound(), and qWarning.

Referenced by QQuickAbstractColorPicker::color(), QQuickColorDialogImpl::color(), QQuickSaturationLightnessPicker::colorAt(), QQuickColorProvider::fromHslF(), and genRandom().

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◆ fromHsv()

QColor QColor::fromHsv	(	int	h,
		int	s,
		int	v,
		int	a = 255 )

static

Static convenience function that returns a QColor constructed from the HSV color values, h (hue), s (saturation), v (value), and a (alpha-channel, i.e.

transparency).

The value of s, v, and a must all be in the range 0-255; the value of h must be in the range 0-359.

See also: toHsv(), fromHsvF(), isValid(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 2499 of file qcolor.cpp.

References QColor(), Hsv, and qWarning.

Referenced by QGraphicsScenePrivate::draw(), QtPrivate::QColorLuminancePicker::paintEvent(), and parseColorValue().

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◆ fromHsvF()

QColor QColor::fromHsvF	(	float	h,
		float	s,
		float	v,
		float	a = 1.0 )

static

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Static convenience function that returns a QColor constructed from the HSV color values, h (hue), s (saturation), v (value), and a (alpha-channel, i.e.

transparency).

All the values must be in the range 0.0-1.0.

See also: toHsv(), fromHsv(), isValid(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 2530 of file qcolor.cpp.

References QColor(), Hsv, qRound(), and qWarning.

Referenced by QQuickAbstractColorPicker::color(), QQuickColorDialogImpl::color(), QQuickColorInputs::color(), QQuickColorProvider::fromHsvF(), and genRandom().

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◆ fromRgb() [1/2]

QColor QColor::fromRgb	(	int	r,
		int	g,
		int	b,
		int	a = 255 )

static

Static convenience function that returns a QColor constructed from the RGB color values, r (red), g (green), b (blue), and a (alpha-channel, i.e.

transparency).

All the values must be in the range 0-255.

See also: toRgb(), fromRgba64(), fromRgbF(), isValid()

Definition at line 2399 of file qcolor.cpp.

References QColor(), qWarning, and Rgb.

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◆ fromRgb() [2/2]

QColor QColor::fromRgb ( QRgb rgb )

staticnoexcept

Static convenience function that returns a QColor constructed from the given QRgb value rgb.

The alpha component of rgb is ignored (i.e. it is automatically set to 255), use the fromRgba() function to include the alpha-channel specified by the given QRgb value.

See also: fromRgba(), fromRgbF(), toRgb(), isValid()

Definition at line 2369 of file qcolor.cpp.

References qBlue(), qGreen(), qRed(), and rgb.

Referenced by QQuickImagineTheme::initialize(), parseColorValue(), QWindowsVistaStyle::polish(), qt_accentColor(), QQuickMaterialStyle::switchCheckedHandleColor(), and QQuickMaterialStyle::switchDisabledCheckedHandleColor().

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◆ fromRgba()

QColor QColor::fromRgba ( QRgb rgba )

staticnoexcept

Static convenience function that returns a QColor constructed from the given QRgb value rgba.

Unlike the fromRgb() function, the alpha-channel specified by the given QRgb value is included.

See also: fromRgb(), fromRgba64(), isValid()

Definition at line 2385 of file qcolor.cpp.

References qAlpha(), qBlue(), qGreen(), and qRed().

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◆ fromRgba64() [1/2]

QColor QColor::fromRgba64 ( QRgba64 rgba64 )

staticnoexcept

Since: 5.6

Static convenience function that returns a QColor constructed from the given QRgba64 value rgba64.

See also: fromRgb(), fromRgbF(), toRgb(), isValid()

Definition at line 2482 of file qcolor.cpp.

References setRgba64().

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◆ fromRgba64() [2/2]

QColor QColor::fromRgba64	(	ushort	r,
		ushort	g,
		ushort	b,
		ushort	a = USHRT_MAX )

staticnoexcept

Since: 5.6

Static convenience function that returns a QColor constructed from the RGBA64 color values, r (red), g (green), b (blue), and a (alpha-channel, i.e. transparency).

See also: fromRgb(), fromRgbF(), toRgb(), isValid()

Definition at line 2467 of file qcolor.cpp.

References qRgba64(), and setRgba64().

Referenced by fromString().

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◆ fromRgbF()

QColor QColor::fromRgbF	(	float	r,
		float	g,
		float	b,
		float	a = 1.0 )

static

Static convenience function that returns a QColor constructed from the RGB color values, r (red), g (green), b (blue), and a (alpha-channel, i.e.

transparency).

The alpha value must be in the range 0.0-1.0. If any of the other values are outside the range of 0.0-1.0 the color model will be set as ExtendedRgb.

See also: fromRgb(), fromRgba64(), toRgb(), isValid()

Definition at line 2427 of file qcolor.cpp.

References QColor(), castF16(), ExtendedRgb, qRound(), qWarning, and Rgb.

Referenced by aiColorToQColor(), aiColorToQColor(), QGtk3ColorDialogHelper::currentColor(), QSGRhiAtlasTexture::Atlas::enqueueTextureUpload(), QQuickColorProvider::fromRgbF(), genRandom(), QQuick3DInstancing::InstanceTableEntry::getColor(), qPremultiplyWithExtraAlpha(), qsg_premultiply_color(), qt_premultiply_color(), query_colormap(), ExampleRhiWidget::render(), ExampleRhiItemRenderer::render(), ScreenMapPass::renderPrep(), setLightProperties(), QSSGUtils::color::sRGBToLinearColor(), QQuick3DSceneRenderer::synchronize(), QQuickColorProvider::tint(), QSG24BitTextMaskRhiShader::updateGraphicsPipelineState(), QSGHiQSubPixelDistanceFieldTextMaterialRhiShader::updateGraphicsPipelineState(), and gradientcreationsnippet::wrapper().

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◆ fromString()

QColor QColor::fromString ( QAnyStringView name )

staticnoexcept

Since: 6.4

Returns an RGB QColor parsed from name, which may be in one of these formats:

\list

#RGB (each of R, G, and B is a single hex digit)
#RRGGBB
#AARRGGBB (Since 5.2)
#RRRGGGBBB
#RRRRGGGGBBBB
A name from the list of colors defined in the list of \l{https://www.w3.org/TR/SVG11/types.html#ColorKeywords}{SVG color keyword names} provided by the World Wide Web Consortium; for example, "steelblue" or "gainsboro". These color names work on all platforms. Note that these color names are not the same as defined by the Qt::GlobalColor enums, e.g. "green" and Qt::green does not refer to the same color.
transparent - representing the absence of a color. \endlist

Returns an invalid color if name cannot be parsed.

See also: isValidColorName()

Definition at line 980 of file qcolor.cpp.

References fromRgba(), fromRgba64(), get_hex_rgb(), and get_named_rgb().

Referenced by QTextHtmlParser::applyAttributes(), QQuickColorProvider::colorFromString(), QQuickColorValueType::create(), QQuickMaterialStyle::initGlobals(), QQuickUniversalStyle::initGlobals(), QQuick3DFileInstancing::loadFromXmlFile(), QQuickStyledTextPrivate::parseFontAttributes(), QCss::Parser::parseHexColor(), qt_color_from_string(), QDeclarativeGeoMapCopyrightNotice::rasterizeHtmlAndUpdate(), resolveColor(), QQuickColorProvider::rgbaFromString(), QtWaylandClient::QWaylandTextInputMethod::text_input_method_v1_input_method_event_attribute(), and toColor().

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◆ getCmyk()

void QColor::getCmyk	(	int *	c,
		int *	m,
		int *	y,
		int *	k,
		int *	a = nullptr ) const

Sets the contents pointed to by c, m, y, k, and a, to the cyan, magenta, yellow, black, and alpha-channel (transparency) components of the color's CMYK value.

These components can be retrieved individually using the cyan(), magenta(), yellow(), black() and alpha() functions.

See also: setCmyk(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2626 of file qcolor.cpp.

References Cmyk, getCmyk(), Invalid, qt_div_257(), and toCmyk().

Referenced by getCmyk().

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◆ getCmykF()

void QColor::getCmykF	(	float *	c,
		float *	m,
		float *	y,
		float *	k,
		float *	a = nullptr ) const

Sets the contents pointed to by c, m, y, k, and a, to the cyan, magenta, yellow, black, and alpha-channel (transparency) components of the color's CMYK value.

These components can be retrieved individually using the cyanF(), magentaF(), yellowF(), blackF() and alphaF() functions.

See also: setCmykF(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2655 of file qcolor.cpp.

References Cmyk, getCmykF(), Invalid, and toCmyk().

Referenced by getCmykF().

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◆ getHsl()

void QColor::getHsl	(	int *	h,
		int *	s,
		int *	l,
		int *	a = nullptr ) const

Since: 4.6

Sets the contents pointed to by h, s, l, and a, to the hue, saturation, lightness, and alpha-channel (transparency) components of the color's HSL value.

These components can be retrieved individually using the hslHue(), hslSaturation(), lightness() and alpha() functions.

See also: getHslF(), setHsl(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 1157 of file qcolor.cpp.

References getHsl(), Hsl, Invalid, qt_div_257(), and toHsl().

Referenced by getHsl().

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◆ getHslF()

void QColor::getHslF	(	float *	h,
		float *	s,
		float *	l,
		float *	a = nullptr ) const

Since: 4.6

Sets the contents pointed to by h, s, l, and a, to the hue, saturation, lightness, and alpha-channel (transparency) components of the color's HSL value.

These components can be retrieved individually using the hslHueF(), hslSaturationF(), lightnessF() and alphaF() functions.

See also: getHsl(), setHslF(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 1127 of file qcolor.cpp.

References getHslF(), Hsl, Invalid, and toHsl().

Referenced by genRandom(), and getHslF().

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◆ getHsv()

void QColor::getHsv	(	int *	h,
		int *	s,
		int *	v,
		int *	a = nullptr ) const

Sets the contents pointed to by h, s, v, and a, to the hue, saturation, value, and alpha-channel (transparency) components of the color's HSV value.

These components can be retrieved individually using the hue(), saturation(), value() and alpha() functions.

See also: setHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1045 of file qcolor.cpp.

References getHsv(), Hsv, Invalid, qt_div_257(), and toHsv().

Referenced by QAndroidStyle::AndroidControl::drawControl(), QQC2::QCommonStyle::drawPrimitive(), QCommonStyle::drawPrimitive(), and getHsv().

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◆ getHsvF()

void QColor::getHsvF	(	float *	h,
		float *	s,
		float *	v,
		float *	a = nullptr ) const

Sets the contents pointed to by h, s, v, and a, to the hue, saturation, value, and alpha-channel (transparency) components of the color's HSV value.

These components can be retrieved individually using the hueF(), saturationF(), valueF() and alphaF() functions.

See also: setHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1017 of file qcolor.cpp.

References getHsvF(), Hsv, Invalid, and toHsv().

Referenced by genRandom(), and getHsvF().

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◆ getRgb()

void QColor::getRgb	(	int *	r,
		int *	g,
		int *	b,
		int *	a = nullptr ) const

Sets the contents pointed to by r, g, b, and a, to the red, green, blue, and alpha-channel (transparency) components of the color's RGB value.

These components can be retrieved individually using the red(), green(), blue() and alpha() functions.

See also: rgb(), setRgb()

Definition at line 1287 of file qcolor.cpp.

References getRgb(), Invalid, qt_div_257(), Rgb, and toRgb().

Referenced by getRgb().

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◆ getRgbF()

void QColor::getRgbF	(	float *	r,
		float *	g,
		float *	b,
		float *	a = nullptr ) const

Sets the contents pointed to by r, g, b, and a, to the red, green, blue, and alpha-channel (transparency) components of the color's RGB value.

These components can be retrieved individually using the redF(), greenF(), blueF() and alphaF() functions.

See also: rgb(), setRgb()

Definition at line 1252 of file qcolor.cpp.

References castF16(), ExtendedRgb, getRgbF(), Invalid, Rgb, and toRgb().

Referenced by genRandom(), getRgbF(), qt_premultiply_color(), and FlatColorMaterialRhiShader::updateUniformData().

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◆ green()

int QColor::green ( ) const

noexcept

Returns the green color component of this color.

See also: setGreen(), greenF(), getRgb()

Definition at line 1555 of file qcolor.cpp.

References green(), Invalid, qt_div_257(), Rgb, and toRgb().

Referenced by cgColorForQColor(), QQC2::QWindowsXPStyle::drawControl(), QWindowsVistaStyle::drawControl(), QQuick3DParticleEmitter::emitParticle(), QuickTestResult::fuzzyCompare(), QCommonStyle::generatedIconPixmap(), QQC2::QCommonStyle::generatedIconPixmap(), QQuickColorDialogImpl::green(), QQuickColorInputs::green(), green(), QCommandLinkButtonPrivate::mergedColors(), QQuickFusionStyle::mergedColors(), mixColors(), QStaticTextPrivate::paintText(), setBlue(), QCoreGraphicsPaintEnginePrivate::setFillBrush(), and setRed().

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◆ greenF()

float QColor::greenF ( ) const

noexcept

Returns the green color component of this color.

See also: setGreenF(), green(), getRgbF()

Definition at line 1643 of file qcolor.cpp.

References castF16(), ExtendedRgb, greenF(), Invalid, Rgb, and toRgb().

Referenced by QQC2_NAMESPACE::QMacStyle::drawPrimitive(), QMacStyle::drawPrimitive(), greenF(), setBlueF(), setRedF(), QQuick3DSceneRenderer::synchronize(), QQuickColorProvider::tint(), QQuickMultiEffectPrivate::updateColorizationColor(), QQuick3DRenderLayerHelpers::updateLayerNodeHelper(), QQuickMultiEffectPrivate::updateShadowColor(), and QT_BEGIN_NAMESPACE::QSGCurveFillMaterialShader::updateUniformData().

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◆ hslHue()

int QColor::hslHue ( ) const

noexcept

Since: 4.6

Returns the HSL hue color component of this color.

See also: hslHueF(), hsvHue(), getHsl(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 1832 of file qcolor.cpp.

References Hsl, hslHue(), Invalid, and toHsl().

Referenced by hslHue().

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◆ hslHueF()

float QColor::hslHueF ( ) const

noexcept

Since: 4.6

Returns the HSL hue color component of this color.

See also: hslHue(), hsvHueF(), getHslF()

Definition at line 1874 of file qcolor.cpp.

References Hsl, hslHueF(), Invalid, and toHsl().

Referenced by hslHueF().

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◆ hslSaturation()

int QColor::hslSaturation ( ) const

noexcept

Since: 4.6

Returns the HSL saturation color component of this color.

See also: hslSaturationF(), hsvSaturation(), getHsl(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 1846 of file qcolor.cpp.

References Hsl, hslSaturation(), Invalid, qt_div_257(), and toHsl().

Referenced by hslSaturation().

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◆ hslSaturationF()

float QColor::hslSaturationF ( ) const

noexcept

Since: 4.6

Returns the HSL saturation color component of this color.

See also: hslSaturation(), hsvSaturationF(), getHslF(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 1888 of file qcolor.cpp.

References Hsl, hslSaturationF(), Invalid, and toHsl().

Referenced by hslSaturationF().

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◆ hsvHue()

int QColor::hsvHue ( ) const

noexcept

Returns the HSV hue color component of this color.

See also: hueF(), hslHue(), getHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1718 of file qcolor.cpp.

References Hsv, hue(), Invalid, and toHsv().

Referenced by hue().

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◆ hsvHueF()

float QColor::hsvHueF ( ) const

noexcept

Returns the hue color component of this color.

See also: hue(), hslHueF(), getHsvF(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1781 of file qcolor.cpp.

References Hsv, hueF(), Invalid, and toHsv().

Referenced by hueF().

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◆ hsvSaturation()

int QColor::hsvSaturation ( ) const

noexcept

Returns the HSV saturation color component of this color.

See also: saturationF(), hslSaturation(), getHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1744 of file qcolor.cpp.

References Hsv, Invalid, qt_div_257(), saturation(), and toHsv().

Referenced by saturation().

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◆ hsvSaturationF()

float QColor::hsvSaturationF ( ) const

noexcept

Returns the HSV saturation color component of this color.

See also: saturation(), hslSaturationF(), getHsvF(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1806 of file qcolor.cpp.

References Hsv, Invalid, saturationF(), and toHsv().

Referenced by saturationF().

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◆ hue()

int QColor::hue ( ) const

noexcept

Returns the HSV hue color component of this color.

The color is implicitly converted to HSV.

See also: hsvHue(), hslHue(), hueF(), getHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1708 of file qcolor.cpp.

References hsvHue().

Referenced by QQC2::QStyleHelper::drawDial(), hsvHue(), toHsl(), and toHsv().

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◆ hueF()

float QColor::hueF ( ) const

noexcept

Returns the HSV hue color component of this color.

The color is implicitly converted to HSV.

See also: hsvHueF(), hslHueF(), hue(), getHsvF(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1770 of file qcolor.cpp.

References hsvHueF().

Referenced by hsvHueF().

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◆ isValid()

bool QColor::isValid ( ) const

inlinenoexcept

Returns true if the color is valid; otherwise returns false.

Definition at line 285 of file qcolor.h.

References Invalid.

Referenced by QQuickTextNodeEngine::addGlyphsInRange(), QQC2::QCommonStyle::drawComplexControl(), QCommonStyle::drawComplexControl(), QAndroidStyle::drawComplexControl(), QAndroidStyle::AndroidControl::drawControl(), QQC2::QCommonStyle::drawPrimitive(), QCommonStyle::drawPrimitive(), drawTextItemDecoration(), QTabBarPrivate::initBasicStyleOption(), QQuickTextNodeEngine::BinaryTreeNode::insert(), QSGDefaultPainterNode::paint(), QCss::Parser::parseHexColor(), QIOSColorDialog::show(), toCmyk(), toExtendedRgb(), toHsl(), toHsv(), and toRgb().

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◆ isValidColorName()

bool QColor::isValidColorName ( QAnyStringView name )

staticnoexcept

Since: 6.4

Returns true if the name is a valid color name and can be used to construct a valid QColor object, otherwise returns false.

It uses the same algorithm used in fromString().

See also: fromString()

Definition at line 950 of file qcolor.cpp.

References fromString().

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◆ lighter()

QColor QColor::lighter ( int factor = 150 ) const

noexcept

Since: 4.3

Returns a lighter (or darker) color, but does not change this object.

If the factor is greater than 100, this functions returns a lighter color. Setting factor to 150 returns a color that is 50% brighter. If the factor is less than 100, the return color is darker, but we recommend using the darker() function for this purpose. If the factor is 0 or negative, the return value is unspecified.

The function converts the current color to HSV, multiplies the value (V) component by factor and converts the color back to it's original color spec.

See also: darker(), isValid()

Definition at line 2812 of file qcolor.cpp.

Referenced by QQC2::QStyleHelper::drawDial(), QQuickFusionStyle::gradientStart(), QQuickFusionStyle::gradientStop(), QQuickColorProvider::lighter(), QQuickFusionDial::paint(), Q_APPLICATION_STATIC(), qt_accentColor(), qt_ensure_default_accent_color(), qt_fusionPalette(), qt_mac_createSystemPalette(), QGtk3Storage::standardPalette(), QStyle::standardPalette(), QQC2::QStyle::standardPalette(), and QAndroidPlatformTheme::updateStyle().

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◆ lightness()

int QColor::lightness ( ) const

noexcept

Since: 4.6

Returns the lightness color component of this color.

See also: lightnessF(), getHsl()

Definition at line 1860 of file qcolor.cpp.

References Hsl, Invalid, lightness(), qt_div_257(), and toHsl().

Referenced by QGtk3Interface::colorSchemeByColors(), lightness(), qt_ensure_default_accent_color(), shouldApplyDarkFrame(), and toHsl().

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◆ lightnessF()

float QColor::lightnessF ( ) const

noexcept

Since: 4.6

Returns the lightness color component of this color.

See also: value(), getHslF()

Definition at line 1902 of file qcolor.cpp.

References Hsl, Invalid, lightnessF(), and toHsl().

Referenced by lightnessF().

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◆ magenta()

int QColor::magenta ( ) const

noexcept

Returns the magenta color component of this color.

See also: magentaF(), getCmyk(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1926 of file qcolor.cpp.

References Cmyk, Invalid, magenta(), qt_div_257(), and toCmyk().

Referenced by magenta().

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◆ magentaF()

float QColor::magentaF ( ) const

noexcept

Returns the magenta color component of this color.

See also: magenta(), getCmykF(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1975 of file qcolor.cpp.

References Cmyk, Invalid, magentaF(), and toCmyk().

Referenced by magentaF().

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◆ name()

QString QColor::name ( NameFormat format = HexRgb ) const

Since: 5.2

Returns the name of the color in the specified format.

See also: fromString(), NameFormat

Definition at line 834 of file qcolor.cpp.

References HexArgb, HexRgb, QString::number(), Q_INT64_C, and rgba().

Referenced by generateWavyPixmap(), main(), and QWaylandQtTextInputMethod::sendInputMethodEvent().

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◆ operator QVariant()

QColor::operator QVariant ( ) const

Returns the color as a QVariant.

Definition at line 2922 of file qcolor.cpp.

References QVariant::fromValue().

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◆ operator!=()

bool QColor::operator!= ( const QColor & color ) const

noexcept

Returns true if this color has different color specification or component values from color; otherwise returns false.

ExtendedRgb and Rgb specifications are considered matching in this context.

See also: spec()

Definition at line 2915 of file qcolor.cpp.

References operator==().

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◆ operator=()

QColor & QColor::operator= ( Qt::GlobalColor color )

noexcept

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Assigns a copy of color and returns a reference to this color.

Definition at line 2874 of file qcolor.cpp.

◆ operator==()

bool QColor::operator== ( const QColor & color ) const

noexcept

Returns true if this color has the same color specification and component values as color; otherwise returns false.

ExtendedRgb and Rgb specifications are considered matching in this context.

See also: spec()

Definition at line 2887 of file qcolor.cpp.

References Hsl, Hsv, and qFuzzyCompare().

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◆ red()

int QColor::red ( ) const

noexcept

Returns the red color component of this color.

See also: setRed(), redF(), getRgb()

Definition at line 1528 of file qcolor.cpp.

References Invalid, qt_div_257(), red(), Rgb, and toRgb().

Referenced by cgColorForQColor(), QQC2::QWindowsXPStyle::drawControl(), QWindowsVistaStyle::drawControl(), QQuick3DParticleEmitter::emitParticle(), QuickTestResult::fuzzyCompare(), QCommonStyle::generatedIconPixmap(), QQC2::QCommonStyle::generatedIconPixmap(), QQuickImageParticle::initialize(), QCommandLinkButtonPrivate::mergedColors(), QQuickFusionStyle::mergedColors(), mixColors(), QStaticTextPrivate::paintText(), QQuickColorDialogImpl::red(), QQuickColorInputs::red(), red(), setBlue(), QCoreGraphicsPaintEnginePrivate::setFillBrush(), setGreen(), setRed(), and setRedF().

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◆ redF()

float QColor::redF ( ) const

noexcept

Returns the red color component of this color.

See also: setRedF(), red(), getRgbF()

Definition at line 1611 of file qcolor.cpp.

References castF16(), ExtendedRgb, Invalid, redF(), Rgb, and toRgb().

Referenced by QQC2_NAMESPACE::QMacStyle::drawPrimitive(), QMacStyle::drawPrimitive(), redF(), setBlueF(), setGreenF(), QQuick3DSceneRenderer::synchronize(), QQuickColorProvider::tint(), QQuickMultiEffectPrivate::updateColorizationColor(), QQuick3DRenderLayerHelpers::updateLayerNodeHelper(), QQuickMultiEffectPrivate::updateShadowColor(), and QT_BEGIN_NAMESPACE::QSGCurveFillMaterialShader::updateUniformData().

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◆ rgb()

QRgb QColor::rgb ( ) const

noexcept

Returns the RGB value of the color.

The alpha value is opaque.

See also: getRgb(), rgba()

Definition at line 1439 of file qcolor.cpp.

References Invalid, qRgb(), qt_div_257(), Rgb, rgb(), and toRgb().

Referenced by QSGCurveStrokeMaterial::compare(), QX11PlatformPixmap::createBitmapFromImage(), QWin32PrintEngine::drawTextItem(), QX11PlatformPixmap::fill(), makeBitmap(), makeBitmapCompliantIfNeeded(), qt_xcb_XPixmapFromBitmap(), rgb(), QColorDialogPrivate::selectColor(), QPainter::setBackground(), QPainter::setPen(), QX11PaintEngine::updatePen(), and src_gui_painting_qcolor::wrapper().

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◆ rgba()

QRgb QColor::rgba ( ) const

noexcept

Returns the RGB value of the color, including its alpha.

For an invalid color, the alpha value of the returned color is unspecified.

See also: setRgba(), rgb(), rgba64()

Definition at line 1376 of file qcolor.cpp.

References Invalid, qRgba(), qt_div_257(), Rgb, rgba(), and toRgb().

Referenced by QSGFlatColorMaterial::compare(), QPixmap::createMaskFromColor(), QX11PlatformPixmap::fill(), is_monochrome(), name(), QSvgIOHandler::read(), QPdfIOHandler::read(), ColorImageProvider::requestPixmap(), QRasterPlatformPixmap::resize(), rgba(), QQuickColorDialogImpl::setColor(), QQuickColorInputs::setColor(), QWindows11Style::styleHint(), QMacStyle::styleHint(), QQC2_NAMESPACE::QMacStyle::styleHint(), QCommonStyle::styleHint(), QQC2::QCommonStyle::styleHint(), QX11PaintEngine::updateBrush(), and QX11PaintEngine::updatePen().

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◆ rgba64()

QRgba64 QColor::rgba64 ( ) const

noexcept

Since: 5.6

Returns the RGB64 value of the color, including its alpha.

For an invalid color, the alpha value of the returned color is unspecified.

See also: setRgba64(), rgba(), rgb()

Definition at line 1408 of file qcolor.cpp.

References Invalid, qRgba64(), Rgb, rgba64(), and toRgb().

Referenced by rgba64().

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◆ saturation()

int QColor::saturation ( ) const

noexcept

Returns the HSV saturation color component of this color.

The color is implicitly converted to HSV.

See also: hsvSaturation(), hslSaturation(), saturationF(), getHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1734 of file qcolor.cpp.

References hsvSaturation().

Referenced by QQC2::QStyleHelper::drawDial(), and hsvSaturation().

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◆ saturationF()

float QColor::saturationF ( ) const

noexcept

Returns the HSV saturation color component of this color.

The color is implicitly converted to HSV.

See also: hsvSaturationF(), hslSaturationF(), saturation(), getHsvF(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1796 of file qcolor.cpp.

References hsvSaturationF().

Referenced by hsvSaturationF().

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◆ setAlpha()

void QColor::setAlpha ( int alpha )

Sets the alpha of this color to alpha.

Integer alpha is specified in the range 0-255.

See also: alpha(), alphaF(), {QColor::Alpha-Blended Drawing}{Alpha-Blended Drawing}

Definition at line 1481 of file qcolor.cpp.

References castF16(), ExtendedRgb, and QCOLOR_INT_RANGE_CHECK.

Referenced by QQuickTextNodeEngine::addToSceneGraph(), QVideoTextureHelper::SubtitleLayout::draw(), QWindows11Style::drawControl(), QQC2::QStyleHelper::drawDial(), QPagePreview::paintEvent(), placeHolderColor(), qt_fusionPalette(), qt_placeholder_from_text(), QVideoTextureHelper::SubtitleLayout::toImage(), QX11PaintEngine::updateBrush(), QWizardPrivate::updatePalette(), QX11PaintEngine::updatePen(), and QPdfEngine::updateState().

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◆ setAlphaF()

void QColor::setAlphaF ( float alpha )

Sets the alpha of this color to alpha.

float alpha is specified in the range 0.0-1.0.

See also: alphaF(), alpha(), {QColor::Alpha-Blended Drawing}{Alpha-Blended Drawing}

Definition at line 1511 of file qcolor.cpp.

References castF16(), ExtendedRgb, QCOLOR_REAL_RANGE_CHECK, and qRound().

Referenced by QQuickColorProvider::alpha(), QQuickMaterialStyle::buttonColor(), QSvgStyleResolver::currentFillColor(), QSvgStyleResolver::currentStrokeColor(), QQC2_NAMESPACE::QMacStyle::drawControl(), QMacStyle::drawControl(), QQC2::QStyleHelper::drawDial(), QQC2_NAMESPACE::QMacStyle::drawPrimitive(), QMacStyle::drawPrimitive(), QWidgetPrivate::drawWidget(), QCommonStyle::generatedIconPixmap(), QQC2::QCommonStyle::generatedIconPixmap(), QItemDelegate::selectedPixmap(), and QWindowsIntegration::setApplicationBadge().

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◆ setBlue()

void QColor::setBlue ( int blue )

Sets the blue color component of this color to blue.

Integer components are specified in the range 0-255.

See also: blue(), blueF(), setRgb()

Definition at line 1597 of file qcolor.cpp.

References alpha(), green(), QCOLOR_INT_RANGE_CHECK, red(), Rgb, and setRgb().

Referenced by QCommandLinkButtonPrivate::mergedColors(), and QQuickFusionStyle::mergedColors().

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◆ setBlueF()

void QColor::setBlueF ( float blue )

Sets the blue color component of this color to blue.

If blue lies outside the 0.0-1.0 range, the color model will be changed to ExtendedRgb.

See also: blueF(), blue(), setRgbF()

Definition at line 1690 of file qcolor.cpp.

References alphaF(), castF16(), ExtendedRgb, greenF(), qRound(), redF(), Rgb, and setRgbF().

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◆ setCmyk()

void QColor::setCmyk	(	int	c,
		int	m,
		int	y,
		int	k,
		int	a = 255 )

Sets the color to CMYK values, c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

transparency).

All the values must be in the range 0-255.

See also: getCmyk(), setCmykF(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2682 of file qcolor.cpp.

References Cmyk, and qWarning.

◆ setCmykF()

void QColor::setCmykF	(	float	c,
		float	m,
		float	y,
		float	k,
		float	a = 1.0 )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the color to CMYK values, c (cyan), m (magenta), y (yellow), k (black), and a (alpha-channel, i.e.

transparency).

All the values must be in the range 0.0-1.0.

See also: getCmykF(), setCmyk(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2712 of file qcolor.cpp.

References Cmyk, qRound(), and qWarning.

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◆ setGreen()

void QColor::setGreen ( int green )

Sets the green color component of this color to green.

Integer components are specified in the range 0-255.

See also: green(), greenF(), setRgb()

Definition at line 1568 of file qcolor.cpp.

References alpha(), blue(), QCOLOR_INT_RANGE_CHECK, red(), Rgb, and setRgb().

Referenced by QCommandLinkButtonPrivate::mergedColors(), and QQuickFusionStyle::mergedColors().

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◆ setGreenF()

void QColor::setGreenF ( float green )

Sets the green color component of this color to green.

If green lies outside the 0.0-1.0 range, the color model will be changed to ExtendedRgb.

See also: greenF(), green(), setRgbF()

Definition at line 1660 of file qcolor.cpp.

References alphaF(), blueF(), castF16(), ExtendedRgb, qRound(), redF(), Rgb, and setRgbF().

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◆ setHsl()

void QColor::setHsl	(	int	h,
		int	s,
		int	l,
		int	a = 255 )

Since: 4.6

Sets a HSL color value; h is the hue, s is the saturation, l is the lightness and a is the alpha component of the HSL color.

The saturation, value and alpha-channel values must be in the range 0-255, and the hue value must be greater than -1.

See also: getHsl(), setHslF()

Definition at line 1215 of file qcolor.cpp.

References Hsl, and qWarning.

◆ setHslF()

void QColor::setHslF	(	float	h,
		float	s,
		float	l,
		float	a = 1.0 )

Since: 4.6

Sets a HSL color lightness; h is the hue, s is the saturation, l is the lightness and a is the alpha component of the HSL color.

All the values must be in the range 0.0-1.0.

See also: getHslF(), setHsl()

Definition at line 1185 of file qcolor.cpp.

References Hsl, qRound(), and qWarning.

Referenced by darkerShade(), and lighterShade().

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◆ setHsv()

void QColor::setHsv	(	int	h,
		int	s,
		int	v,
		int	a = 255 )

Sets a HSV color value; h is the hue, s is the saturation, v is the value and a is the alpha component of the HSV color.

The saturation, value and alpha-channel values must be in the range 0-255, and the hue value must be greater than -1.

See also: getHsv(), setHsvF(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1099 of file qcolor.cpp.

References Hsv, and qWarning.

Referenced by QQC2::QStyleHelper::drawDial(), and QQuickFusionDial::paint().

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◆ setHsvF()

void QColor::setHsvF	(	float	h,
		float	s,
		float	v,
		float	a = 1.0 )

Sets a HSV color value; h is the hue, s is the saturation, v is the value and a is the alpha component of the HSV color.

All the values must be in the range 0.0-1.0.

See also: getHsvF(), setHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1071 of file qcolor.cpp.

References Hsv, qRound(), and qWarning.

Referenced by QQC2_NAMESPACE::QMacStyle::drawControl(), and QMacStyle::drawControl().

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◆ setRed()

void QColor::setRed ( int red )

Sets the red color component of this color to red.

Integer components are specified in the range 0-255.

See also: red(), redF(), setRgb()

Definition at line 1541 of file qcolor.cpp.

References alpha(), blue(), green(), QCOLOR_INT_RANGE_CHECK, red(), Rgb, and setRgb().

Referenced by QCommandLinkButtonPrivate::mergedColors(), and QQuickFusionStyle::mergedColors().

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◆ setRedF()

void QColor::setRedF ( float red )

Sets the red color component of this color to red.

If red lies outside the 0.0-1.0 range, the color model will be changed to ExtendedRgb.

See also: redF(), red(), setRgbF()

Definition at line 1628 of file qcolor.cpp.

References alphaF(), blueF(), castF16(), ExtendedRgb, greenF(), qRound(), red(), Rgb, and setRgbF().

Referenced by QQuickColor::blend().

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◆ setRgb() [1/2]

void QColor::setRgb	(	int	r,
		int	g,
		int	b,
		int	a = 255 )

Sets the RGB value to r, g, b and the alpha value to a.

All the values must be in the range 0-255.

See also: rgb(), getRgb(), setRgbF()

Definition at line 1350 of file qcolor.cpp.

References qWarning, and Rgb.

Referenced by setBlue(), setGreen(), and setRed().

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◆ setRgb() [2/2]

void QColor::setRgb ( QRgb rgb )

noexcept

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the RGB value to rgb.

The alpha value is set to opaque.

Definition at line 1451 of file qcolor.cpp.

References qBlue(), qGreen(), qRed(), and rgb.

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◆ setRgba()

void QColor::setRgba ( QRgb rgba )

noexcept

Sets the RGB value to rgba, including its alpha.

See also: rgba(), rgb(), setRgba64()

Definition at line 1388 of file qcolor.cpp.

References qAlpha(), qBlue(), qGreen(), and qRed().

Referenced by QAndroidStyle::AndroidColorDrawable::AndroidColorDrawable(), and QtPrivate::QColorShower::updateQColor().

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◆ setRgba64()

void QColor::setRgba64 ( QRgba64 rgba )

noexcept

Since: 5.6

Sets the RGB64 value to rgba, including its alpha.

See also: setRgba(), rgba64()

Definition at line 1422 of file qcolor.cpp.

Referenced by fromRgba64(), and fromRgba64().

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◆ setRgbF()

void QColor::setRgbF	(	float	r,
		float	g,
		float	b,
		float	a = 1.0 )

Sets the color channels of this color to r (red), g (green), b (blue) and a (alpha, transparency).

The alpha value must be in the range 0.0-1.0. If any of the other values are outside the range of 0.0-1.0 the color model will be set as ExtendedRgb.

See also: rgb(), getRgbF(), setRgb()

Definition at line 1317 of file qcolor.cpp.

References castF16(), ExtendedRgb, qRound(), qWarning, and Rgb.

Referenced by QImage::pixelColor(), setBlueF(), setGreenF(), and setRedF().

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◆ spec()

Spec QColor::spec ( ) const

inlinenoexcept

Returns how the color was specified.

See also: Spec, convertTo()

Definition at line 75 of file qcolor.h.

◆ toCmyk()

QColor QColor::toCmyk ( ) const

noexcept

Creates and returns a CMYK QColor based on this color.

See also: fromCmyk(), convertTo(), isValid(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 2295 of file qcolor.cpp.

References Cmyk, isValid(), qMin(), qRound(), Rgb, toCmyk(), and toRgb().

Referenced by black(), blackF(), cyan(), cyanF(), QCmyk32::fromColor(), QCmyk32::fromRgba(), getCmyk(), getCmykF(), magenta(), magentaF(), QColorTransform::map(), toCmyk(), yellow(), and yellowF().

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◆ toExtendedRgb()

QColor QColor::toExtendedRgb ( ) const

noexcept

Create and returns an extended RGB QColor based on this color.

Since: 5.14

See also: toRgb, convertTo()

Definition at line 2012 of file qcolor.cpp.

References castF16(), ExtendedRgb, isValid(), Rgb, toExtendedRgb(), and toRgb().

Referenced by toExtendedRgb().

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◆ toHsl()

QColor QColor::toHsl ( ) const

noexcept

Creates and returns an HSL QColor based on this color.

See also: fromHsl(), convertTo(), isValid(), {QColor::The HSL Color Model}{The HSL Color Model}

Definition at line 2239 of file qcolor.cpp.

References Hsl, hue(), isValid(), lightness(), Q_ASSERT_X, Q_MAX_3, Q_MIN_3, qFuzzyCompare(), qFuzzyIsNull(), qRound(), Rgb, toHsl(), and toRgb().

Referenced by darkerShade(), getHsl(), getHslF(), hslHue(), hslHueF(), hslSaturation(), hslSaturationF(), lighterShade(), lightness(), lightnessF(), and toHsl().

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◆ toHsv()

QColor QColor::toHsv ( ) const

noexcept

Creates and returns an HSV QColor based on this color.

See also: fromHsv(), convertTo(), isValid(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 2188 of file qcolor.cpp.

References Hsv, hue(), isValid(), Q_ASSERT_X, Q_MAX_3, Q_MIN_3, qFuzzyCompare(), qFuzzyIsNull(), qRound(), Rgb, toHsv(), and toRgb().

Referenced by QQC2::QStyleHelper::drawDial(), getHsv(), getHsvF(), hsvHue(), hsvHueF(), hsvSaturation(), hsvSaturationF(), toHsv(), value(), and valueF().

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◆ toRgb()

QColor QColor::toRgb ( ) const

noexcept

Create and returns an RGB QColor based on this color.

See also: fromRgb(), convertTo(), isValid()

Definition at line 2035 of file qcolor.cpp.

References castF16(), Cmyk, ExtendedRgb, Hsl, Hsv, i, isValid(), qBound(), qRound(), and Rgb.

Referenced by QQuickColor::blend(), blue(), blueF(), QQuickPlatformColorDialog::currentColor(), QQC2::QWindowsXPStyle::drawControl(), QQC2::QWindowsStyle::drawPrimitive(), QQC2::QCommonStyle::generatedIconPixmap(), getRgb(), getRgbF(), green(), greenF(), QQuickImageParticle::initialize(), QColorTransform::map(), QQuickFusionStyle::mergedColors(), QQuickJSContext2D::method_get_fillStyle(), QQuickJSContext2D::method_get_strokeStyle(), red(), redF(), rgb(), rgba(), rgba64(), toCmyk(), toExtendedRgb(), toHsl(), toHsv(), QQuickColor::transparent(), and QSGDefaultGlyphNode::update().

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◆ value()

int QColor::value ( ) const

noexcept

Returns the value color component of this color.

See also: valueF(), getHsv(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1756 of file qcolor.cpp.

References Hsv, Invalid, qt_div_257(), toHsv(), and value().

Referenced by QQC2::QStyleHelper::drawDial(), QQuickFusionDial::paint(), QSvgIOHandler::setOption(), QPdfIOHandler::setOption(), QQuickColorProvider::tint(), value(), and QQuick3DParticleShapeDataUtils::writeValue().

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◆ valueF()

float QColor::valueF ( ) const

noexcept

Returns the value color component of this color.

See also: value(), getHsvF(), {QColor::The HSV Color Model}{The HSV Color Model}

Definition at line 1818 of file qcolor.cpp.

References Hsv, Invalid, toHsv(), and valueF().

Referenced by valueF(), and QQuick3DPhysicsHeightField::writeSamples().

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◆ yellow()

int QColor::yellow ( ) const

noexcept

Returns the yellow color component of this color.

See also: yellowF(), getCmyk(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1938 of file qcolor.cpp.

References Cmyk, Invalid, qt_div_257(), toCmyk(), and yellow().

Referenced by yellow().

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◆ yellowF()

float QColor::yellowF ( ) const

noexcept

Returns the yellow color component of this color.

See also: yellow(), getCmykF(), {QColor::The CMYK Color Model}{The CMYK Color Model}

Definition at line 1987 of file qcolor.cpp.

References Cmyk, Invalid, toCmyk(), and yellowF().

Referenced by yellowF().

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Friends And Related Symbol Documentation

◆ operator<< [1/2]

QDataStream & operator<<	(	QDataStream &	stream,
		const QColor &	color )

friend

Writes the color to the stream.

See also: {Serializing Qt Data Types}

Definition at line 2977 of file qcolor.cpp.

◆ operator<<() [2/2]

QDataStream & operator<<	(	QDataStream &	stream,
		const QColor &	color )

See also: {Serializing Qt Data Types}

Definition at line 2977 of file qcolor.cpp.

◆ operator>> [1/2]

QDataStream & operator>>	(	QDataStream &	stream,
		QColor &	color )

friend

Reads the color from the stream.

See also: {Serializing Qt Data Types}

Definition at line 3013 of file qcolor.cpp.

◆ operator>>() [2/2]

QDataStream & operator>>	(	QDataStream &	stream,
		QColor &	color )

See also: {Serializing Qt Data Types}

Definition at line 3013 of file qcolor.cpp.

◆ qAlpha()

int qAlpha ( QRgb rgba )

See also: qRgb(), QColor::alpha()

Definition at line 27 of file qrgb.h.

References rgb.

◆ qBlue()

int qBlue ( QRgb rgb )

See also: qRgb(), QColor::blue()

Definition at line 24 of file qrgb.h.

References rgb.

◆ QColormap

friend class QColormap

friend

Definition at line 259 of file qcolor.h.

◆ qGray() [1/2]

int qGray	(	int	r,
		int	g,
		int	b )

The gray value is calculated using the formula (r * 11 + g * 16 + b * 5)/32.

Definition at line 36 of file qrgb.h.

◆ qGray() [2/2]

int qGray ( QRgb rgb )

Returns a gray value (0 to 255) from the given ARGB quadruplet rgb.

The gray value is calculated using the formula (R * 11 + G * 16 + B * 5)/32; the alpha-channel is ignored.

Definition at line 39 of file qrgb.h.

References qBlue(), qGray(), qGreen(), qRed(), and rgb.

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◆ qGreen()

int qGreen ( QRgb rgb )

See also: qRgb(), QColor::green()

Definition at line 21 of file qrgb.h.

References rgb.

◆ qPremultiply()

QRgb qPremultiply ( QRgb rgb )

Since: 5.3

Converts an unpremultiplied ARGB quadruplet rgb into a premultiplied ARGB quadruplet.

See also: qUnpremultiply()

Definition at line 45 of file qrgb.h.

References qAlpha().

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◆ qRed()

int qRed ( QRgb rgb )

See also: qRgb(), QColor::red()

Definition at line 18 of file qrgb.h.

References rgb.

◆ qRgb()

QRgb qRgb	(	int	r,
		int	g,
		int	b )

See also: qRgba(), qRed(), qGreen(), qBlue(), qAlpha()

Definition at line 30 of file qrgb.h.

Referenced by rgb().

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◆ QRgb()

QRgb

The type also holds a value for the alpha-channel. The default alpha channel is ff, i.e opaque. For more information, see the \l{QColor::Alpha-Blended Drawing}{Alpha-Blended Drawing} section.

Here are some examples of how QRgb values can be created:

const QRgb rgb1 = 0x88112233;
const QRgb rgb2 = QColor("red").rgb();
const QRgb rgb3 = qRgb(qRed(rgb1), qGreen(rgb2), qBlue(rgb2));
const QRgb rgb4 = qRgba(qRed(rgb1), qGreen(rgb2), qBlue(rgb2), qAlpha(rgb1));

See also: qRgb(), qRgba(), QColor::rgb(), QColor::rgba()

Definition at line 13 of file qrgb.h.

◆ qRgba()

QRgb qRgba	(	int	r,
		int	g,
		int	b,
		int	a )

See also: qRgb(), qRed(), qGreen(), qBlue(), qAlpha()

Definition at line 33 of file qrgb.h.

Referenced by rgba().

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◆ qUnpremultiply()

QRgb qUnpremultiply ( QRgb rgb )

Since: 5.3

Converts a premultiplied ARGB quadruplet rgb into an unpremultiplied ARGB quadruplet.

See also: qPremultiply()

Definition at line 60 of file qrgb.h.

References qAlpha(), qBlue(), qGreen(), qRed(), qRgba(), and qt_inv_premul_factor.

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

qtbase/src/gui/painting/qcolor.h (fb35c54b1e8e02329a40e7a5c473bde56038206c)
qtbase/src/gui/painting/qcolor.cpp (03b72188f45e72d313f8af2e16cb7067b6084f99)

Public Types

Public Member Functions

Static Public Member Functions

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Detailed Description

Member Enumeration Documentation

◆ NameFormat

◆ Spec

Constructor & Destructor Documentation

◆ QColor() [1/10]

◆ QColor() [2/10]

◆ QColor() [3/10]

◆ QColor() [4/10]

◆ QColor() [5/10]

◆ QColor() [6/10]

◆ QColor() [7/10]

◆ QColor() [8/10]

◆ QColor() [9/10]

◆ QColor() [10/10]

Member Function Documentation

◆ alpha()

◆ alphaF()

◆ black()

◆ blackF()

◆ blue()

◆ blueF()

◆ colorNames()

◆ convertTo()

◆ cyan()

◆ cyanF()

◆ darker()

◆ fromCmyk()

◆ fromCmykF()

◆ fromHsl()

◆ fromHslF()

◆ fromHsv()

◆ fromHsvF()

◆ fromRgb() [1/2]

◆ fromRgb() [2/2]

◆ fromRgba()

◆ fromRgba64() [1/2]

◆ fromRgba64() [2/2]

◆ fromRgbF()

◆ fromString()

◆ getCmyk()

◆ getCmykF()

◆ getHsl()

◆ getHslF()

◆ getHsv()

◆ getHsvF()

◆ getRgb()

◆ getRgbF()

◆ green()

◆ greenF()

◆ hslHue()

◆ hslHueF()

◆ hslSaturation()

◆ hslSaturationF()

◆ hsvHue()

◆ hsvHueF()

◆ hsvSaturation()

◆ hsvSaturationF()

◆ hue()

◆ hueF()

◆ isValid()

◆ isValidColorName()

◆ lighter()

◆ lightness()

◆ lightnessF()

◆ magenta()

◆ magentaF()

◆ name()

◆ operator QVariant()

◆ operator!=()

◆ operator=()

◆ operator==()

◆ red()

◆ redF()

◆ rgb()