QColor Class Reference

#include <qcolor.h>

List of all members.

---

Detailed Description

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

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.

qcolor-rgb.png qcolor-hsv.png qcolor-cmyk.png RGB HSV CMYK

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 a color name (such as "blue"), to the setNamedColor() 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 AARRGGBB. Colors can also be set using setRgb(), setHsv() and setCmyk(). To get a lighter or darker color use the light() and dark() 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 {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 Paint System} documentation.

QColor supports floating point precision and provides floating point versions of all the color components functions, e.g. getRgbF(), hueF() and fromCmykF(). Note that since the components is stored using 16-bit integers, there might be minor deviations between the values set using, for example, setRgbF() and the values returned by the getRgbF() function due to rounding. While the integer based functions take values in the range 0-255 (except hue() which must can be specified within the range 0-359), the floating point functions accept values in the range 0.0 - 1.0. @section Alpha-Blended Drawing QColor also support alpha-blended outlining and filling. The alpha channel of a color specifies the transparency effect, 0 represents a fully transparent color, while 255 represents a fully opaque color. For example: @code // Specfiy semi-transparent red painter.setBrush(QColor(255, 0, 0, 127)); painter.drawRect(0, 0, width()/2, height()); // Specify semi-transparend blue painter.setBrush(QColor(0, 0, 255, 127)); painter.drawRect(0, 0, width(), height()/2); \endcode The code above produces the following output: \img alphafill.png Alpha-blended drawing is supported on Windows, Mac OS X, and on X11 systems that have the X Render extension installed. The alpha channel of a color can be retrieved and set using the alpha() and setAlpha() functions if its value is an integer, and alphaF() and setAlphaF() if its value is qreal (double). By default, the alpha-channel is set to 255 (opaque). To retrieve and set \e all the RGB color components (including the alpha-channel) in one go, use the rgba() and setRgba() functions. @section Predefined Colors There are 20 predefined QColors: Qt::white, Qt::black, Qt::red, Qt::darkRed, Qt::green, Qt::darkGreen, Qt::blue, Qt::darkBlue, Qt::cyan, Qt::darkCyan, Qt::magenta, Qt::darkMagenta, Qt::yellow, Qt::darkYellow, Qt::gray, Qt::darkGray, Qt::lightGray, Qt::color0, Qt::color1, and Qt::transparent. \img qt-colors.png Qt Colors QColor provides the static colorNames() function which returns a QStringList containing the color names Qt knows about. The colors Qt::color0 (zero pixel value) and Qt::color1 (non-zero pixel value) are special colors for drawing in QBitmaps. Painting with Qt::color0 sets the bitmap bits to 0 (transparent, i.e. background), and painting with Qt::color1 sets the bits to 1 (opaque, i.e. foreground). @section The HSV Color Model The RGB model is hardware-oriented. Its representation is close to what most monitors show. In contrast, HSV represents color in a way more suited to the human perception of color. For example, the relationships "stronger than", "darker than", and "the opposite of" are easily expressed in HSV but are much harder to express in RGB. HSV, like RGB, has three components: \list \o H, for hue, is in the range 0 to 359 if the color is chromatic (not gray), or meaningless if it is gray. It represents degrees on the color wheel familiar to most people. Red is 0 (degrees), green is 120, and blue is 240. \inlineimage qcolor-hue.png \o S, for saturation, is in the range 0 to 255, and the bigger it is, the stronger the color is. Grayish colors have saturation near 0; very strong colors have saturation near 255. \inlineimage qcolor-saturation.png \o V, for value, is in the range 0 to 255 and represents lightness or brightness of the color. 0 is black; 255 is as far from black as possible. \inlineimage qcolor-value.png \endlist Here are some examples: pure red is H=0, S=255, V=255; a dark red, moving slightly towards the magenta, could be H=350 (equivalent to -10), S=255, V=180; a grayish light red could have H about 0 (say 350-359 or 0-10), S about 50-100, and S=255. Qt returns a hue value of -1 for achromatic colors. If you pass a hue value that is too large, Qt forces it into range. Hue 360 or 720 is treated as 0; hue 540 is treated as 180. In addition to the standard HSV model, Qt provides an alpha-channel to feature \l {QColor#Alpha-Blended Drawing}{alpha-blended drawing}. @section The CMYK Color Model While the RGB and HSV color models are used for display on computer monitors, the CMYK model is used in the four-color printing process of printing presses and some hard-copy devices. CMYK has four components, all in the range 0-255: cyan (C), magenta (M), yellow (Y) and black (K). Cyan, magenta and yellow are called subtractive colors; the CMYK color model creates color by starting with a white surface and then subtracting color by applying the appropriate components. While combining cyan, magenta and yellow gives the colorDefinition at line 47 of file qcolor.h.

Public Types
enum	Spec
Public Member Functions
	QColor ()
	QColor (Qt::GlobalColor color)
	QColor (int r, int g, int b, int a=255)
	QColor (QRgb rgb)
	QColor (const QString &name)
	QColor (const char *name)
	QColor (const QColor &color)
	QColor (Spec spec)
bool	isValid () const
QString	name () const
void	setNamedColor (const QString &name)
Spec	spec () const
int	alpha () const
void	setAlpha (int alpha)
qreal	alphaF () const
void	setAlphaF (qreal alpha)
int	red () const
int	green () const
int	blue () const
void	setRed (int red)
void	setGreen (int green)
void	setBlue (int blue)
qreal	redF () const
qreal	greenF () const
qreal	blueF () const
void	setRedF (qreal red)
void	setGreenF (qreal green)
void	setBlueF (qreal blue)
void	getRgb (int *r, int *g, int *b, int *a=0) const
void	setRgb (int r, int g, int b, int a=255)
void	getRgbF (qreal *r, qreal *g, qreal *b, qreal *a=0) const
void	setRgbF (qreal r, qreal g, qreal b, qreal a=1.0)
QRgb	rgba () const
void	setRgba (QRgb rgba)
QRgb	rgb () const
void	setRgb (QRgb rgb)
int	hue () const
int	saturation () const
int	value () const
qreal	hueF () const
qreal	saturationF () const
qreal	valueF () const
void	getHsv (int *h, int *s, int *v, int *a=0) const
void	setHsv (int h, int s, int v, int a=255)
void	getHsvF (qreal *h, qreal *s, qreal *v, qreal *a=0) const
void	setHsvF (qreal h, qreal s, qreal v, qreal a=1.0)
int	cyan () const
int	magenta () const
int	yellow () const
int	black () const
qreal	cyanF () const
qreal	magentaF () const
qreal	yellowF () const
qreal	blackF () const
void	getCmyk (int *c, int *m, int *y, int *k, int *a=0)
void	setCmyk (int c, int m, int y, int k, int a=255)
void	getCmykF (qreal *c, qreal *m, qreal *y, qreal *k, qreal *a=0)
void	setCmykF (qreal c, qreal m, qreal y, qreal k, qreal a=1.0)
QColor	toRgb () const
QColor	toHsv () const
QColor	toCmyk () const
QColor	convertTo (Spec colorSpec) const
QColor	light (int f=150) const
QColor	dark (int f=200) const
QColor &	operator= (const QColor &)
QColor &	operator= (Qt::GlobalColor color)
bool	operator== (const QColor &c) const
bool	operator!= (const QColor &c) const
	operator QVariant () const
Static Public Member Functions
static QStringList	colorNames ()
static QColor	fromRgb (QRgb rgb)
static QColor	fromRgba (QRgb rgba)
static QColor	fromRgb (int r, int g, int b, int a=255)
static QColor	fromRgbF (qreal r, qreal g, qreal b, qreal a=1.0)
static QColor	fromHsv (int h, int s, int v, int a=255)
static QColor	fromHsvF (qreal h, qreal s, qreal v, qreal a=1.0)
static QColor	fromCmyk (int c, int m, int y, int k, int a=255)
static QColor	fromCmykF (qreal c, qreal m, qreal y, qreal k, qreal a=1.0)
Private Member Functions
	QColor (int, int, int, Spec)
void	invalidate ()
Private Attributes
Spec	cspec
union {
struct {
ushort   alpha
ushort   red
ushort   green
ushort   blue
ushort   pad
}   argb
struct {
ushort   alpha
ushort   hue
ushort   saturation
ushort   value
ushort   pad
}   ahsv
struct {
ushort   alpha
ushort   cyan
ushort   magenta
ushort   yellow
ushort   black
}   acmyk
}	ct
Friends
class	QColormap
Q_GUI_EXPORT QDataStream &	operator<< (QDataStream &, const QColor &)
Q_GUI_EXPORT QDataStream &	operator>> (QDataStream &, QColor &)
Related Functions
(Note that these are not member functions.)
int	qRed (QRgb rgb)
int	qGreen (QRgb rgb)
int	qBlue (QRgb rgb)
int	qAlpha (QRgb rgba)
QRgb	qRgb (int r, int g, int b)
QRgb	qRgba (int r, int g, int b, int a)
int	qGray (int r, int g, int b)
int	qGray (QRgb rgb)
	QRgb

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Member Enumeration Documentation

enum QColor::Spec

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

Rgb Hsv Cmyk Invalid

See also:

spec(), convertTo()

Definition at line 50 of file qcolor.h.

{ Invalid, Rgb, Hsv, Cmyk };

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Constructor & Destructor Documentation

QColor::QColor

(

)

[inline]

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 219 of file qcolor.h.

References invalidate().

Referenced by convertTo(), fromCmyk(), fromCmykF(), fromHsv(), fromHsvF(), fromRgb(), fromRgbF(), and operator=().

{ invalidate(); }

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QColor::QColor

(

Qt::GlobalColor

color

)

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 310 of file qcolor.cpp.

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

{
#define QRGB(r, g, b) \
    QRgb(((0xff << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff)))
#define QRGBA(r, g, b, a) \
    QRgb(((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff))

    static const QRgb global_colors[] = {
        QRGB(255, 255, 255), // Qt::color0
        QRGB(  0,   0,   0), // Qt::color1
        QRGB(  0,   0,   0), // black
        QRGB(255, 255, 255), // white
        /*
         * From the "The Palette Manager: How and Why" by Ron Gery,
         * March 23, 1992, archived on MSDN:
         *
         *     The Windows system palette is broken up into two
         *     sections, one with fixed colors and one with colors
         *     that can be changed by applications. The system palette
         *     predefines 20 entries; these colors are known as the
         *     static or reserved colors and consist of the 16 colors
         *     found in the Windows version 3.0 VGA driver and 4
         *     additional colors chosen for their visual appeal.  The
         *     DEFAULT_PALETTE stock object is, as the name implies,
         *     the default palette selected into a device context (DC)
         *     and consists of these static colors. Applications can
         *     set the remaining 236 colors using the Palette Manager.
         *
         * The 20 reserved entries have indices in [0,9] and
         * [246,255]. We reuse 17 of them.
         */
        QRGB(128, 128, 128), // index 248   medium gray
        QRGB(160, 160, 164), // index 247   light gray
        QRGB(192, 192, 192), // index 7     light gray
        QRGB(255,   0,   0), // index 249   red
        QRGB(  0, 255,   0), // index 250   green
        QRGB(  0,   0, 255), // index 252   blue
        QRGB(  0, 255, 255), // index 254   cyan
        QRGB(255,   0, 255), // index 253   magenta
        QRGB(255, 255,   0), // index 251   yellow
        QRGB(128,   0,   0), // index 1     dark red
        QRGB(  0, 128,   0), // index 2     dark green
        QRGB(  0,   0, 128), // index 4     dark blue
        QRGB(  0, 128, 128), // index 6     dark cyan
        QRGB(128,   0, 128), // index 5     dark magenta
        QRGB(128, 128,   0), // index 3     dark yellow
        QRGBA(0, 0, 0, 0)    //             transparent
    };
#undef QRGB
#undef QRGBA

    setRgb(qRed(global_colors[color]),
           qGreen(global_colors[color]),
           qBlue(global_colors[color]),
           qAlpha(global_colors[color]));
}

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

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 222 of file qcolor.h.

References setRgb().

{ setRgb(r, g, b, a); }

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QColor::QColor

(

QRgb

color

)

Constructs a color with the value color. The alpha component is ignored and set to solid.

See also:

fromRgb(), isValid()

Definition at line 385 of file qcolor.cpp.

References cspec, ct, qBlue(), qGreen(), qRed(), and Rgb.

{
    cspec = Rgb;
    ct.argb.alpha = 0xffff;
    ct.argb.red   = qRed(color)   * 0x101;
    ct.argb.green = qGreen(color) * 0x101;
    ct.argb.blue  = qBlue(color)  * 0x101;
    ct.argb.pad   = 0;
}

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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 228 of file qcolor.h.

References setNamedColor().

{ setNamedColor(aname); }

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QColor::QColor

(

const char *

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 225 of file qcolor.h.

References setNamedColor().

{ setNamedColor(QLatin1String(aname)); }

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QColor::QColor

(

const QColor &

color

)

[inline]

Constructs a color that is a copy of color.

See also:

isValid()

Definition at line 231 of file qcolor.h.

References argb, and ct.

    : cspec(acolor.cspec)
{ ct.argb = acolor.ct.argb; }

QColor::QColor

(

Spec

spec

)

Definition at line 405 of file qcolor.cpp.

References Cmyk, Hsv, Invalid, invalidate(), Rgb, setCmyk(), setHsv(), and setRgb().

{
    switch (spec) {
    case Invalid:
        invalidate();
        break;
    case Rgb:
        setRgb(0, 0, 0);
        break;
    case Hsv:
        setHsv(0, 0, 0);
        break;
    case Cmyk:
        setCmyk(0, 0, 0, 0);
        break;
    }
}

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QColor::QColor	(	int	x,
		int	y,
		int	z,
		Spec	colorSpec
	)			[private]

Use one of the other QColor constructors, or one of the static convenience functions, instead.

---

Member Function Documentation

bool QColor::isValid

(

)

const [inline]

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

Definition at line 235 of file qcolor.h.

References cspec, and Invalid.

Referenced by MainWindow::brushColor(), qdesigner_internal::RichTextEditorToolBar::colorInputActivated(), Q3TextHorizontalLine::draw(), QCommonStyle::drawPrimitive(), QWindowsStyle::drawPrimitive(), Q3TextParagraph::drawString(), drawTextItemDecoration(), QColorWell::dropEvent(), QColorShowLabel::dropEvent(), QTabBarPrivate::getStyleOption(), QGLOverlayWidget::initializeGL(), Q3TextFormat::makeTextFormat(), qdesigner_internal::QtGradientStopsWidgetPrivate::newStop(), Q3TextEdit::optimSetTextFormat(), QCss::Parser::parseHexColor(), MainWindow::penColor(), qt_set_x11_resources(), resolveColor(), SpreadSheet::selectColor(), qdesigner_internal::QtColorLinePrivate::setColor(), Dialog::setColor(), Q3TextParagraph::setColorForSelection(), QPainter::setPen(), Q3TextDocument::setRichTextInternal(), QStyleSheetStyle::styleHint(), TextEdit::textColor(), toCmyk(), toHsv(), toRgb(), SpreadSheet::updateColor(), and Q3TextFormatCollection::updateDefaultFormat().

{ return cspec != Invalid; }

QString QColor::name

(

)

const

Returns the name of the color in the format "#RRGGBB"; i.e. a "#" character followed by three two-digit hexadecimal numbers.

See also:

setNamedColor()

Definition at line 466 of file qcolor.cpp.

References blue(), green(), red(), and s.

Referenced by QTextHtmlExporter::emitBlockAttributes(), QTextHtmlExporter::emitTable(), MainWindow::fileSave(), Q3TextFormat::makeFormatChangeTags(), Dialog::setColor(), setNamedColor(), and QTextHtmlExporter::toHtml().

{
    QString s;
    s.sprintf("#%02x%02x%02x", red(), green(), blue());
    return s;
}

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void QColor::setNamedColor

(

const QString &

name

)

Sets the RGB value of this QColor to name, which may be in one of these formats:

RGB (each of R, G, and B is a single hex digit) RRGGBB RRRGGGBBB RRRRGGGGBBBB A name from the list of colors defined in the list of {SVG color keyword names} provided by the World Wide Web Consortium; for example, "steelblue" or "gainsboro". These color names work on all platforms. transparent - representing the absence of a color.

The color is invalid if name cannot be parsed.

See also:

QColor(), name(), isValid()

Definition at line 493 of file qcolor.cpp.

References invalidate(), QString::isEmpty(), n, name(), QRgb(), qt_get_hex_rgb(), qt_get_named_rgb(), qWarning(), rgb(), setRgb(), and QString::toLatin1().

Referenced by QCss::Parser::parseHexColor(), and QColor().

{
    if (name.isEmpty()) {
        invalidate();
        return;
    }

    QByteArray n = name.toLatin1();
    if (n.startsWith('#')) {
        QRgb rgb;
        if (qt_get_hex_rgb(n, &rgb)) {
            setRgb(rgb);
        } else {
            qWarning("QColor::setNamedColor: Could not parse color '%s'", n.constData());
            invalidate();
        }
        return;
    }

    QRgb rgb;
    if (qt_get_named_rgb(n, &rgb)) {
        setRgb(rgb);
    } else {
        qWarning("QColor::setNamedColor: Unknown color name '%s'", n.constData());
        invalidate();
    }
}

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QStringList QColor::colorNames

(

)

[static]

Returns a QStringList containing the color names Qt knows about.

See also:

{QColor::Predefined Colors}{Predefined Colors}

Definition at line 526 of file qcolor.cpp.

References qt_get_colornames().

Referenced by Window::populateWithColors(), and qdesigner_internal::RichTextEditorToolBar::RichTextEditorToolBar().

{
    return qt_get_colornames();
}

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Spec QColor::spec

(

)

const [inline]

Returns how the color was specified.

See also:

Spec, convertTo()

Definition at line 68 of file qcolor.h.

Referenced by qdesigner_internal::QtColorLinePrivate::checkColor().

    { return cspec; }

int QColor::alpha

(

)

const

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

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 848 of file qcolor.cpp.

References ct, and QCOLOR_INT_RANGE_CHECK.

Referenced by PanelShape::animate(), constructColor(), QCleanlooksStyle::drawComplexControl(), QCleanlooksStyle::drawPrimitive(), ColorDock::paintEvent(), and qdesigner_internal::QtGradientStopsWidget::paintEvent().

{
    QCOLOR_INT_RANGE_CHECK("QColor::setAlpha", alpha);
    ct.argb.alpha = alpha * 0x101;
}

qreal QColor::alphaF

(

)

const

Returns the alpha color component of this color.

See also:

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

Definition at line 860 of file qcolor.cpp.

References ct.

Referenced by QPdfEnginePrivate::addBrushPattern(), qdesigner_internal::QtColorLinePrivate::checkColor(), qdesigner_internal::QtGradientStopsModel::color(), qdesigner_internal::QtColorLinePrivate::colorFromPoint(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), qBrushSetAlphaF(), setBlueF(), setGreenF(), setRedF(), and qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeAlpha().

{ return ct.argb.alpha / qreal(USHRT_MAX); }

void QColor::setAlphaF

(

qreal

alpha

)

Sets the alpha of this color to alpha. qreal alpha is specified in the range 0.0-1.0.

See also:

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

Definition at line 871 of file qcolor.cpp.

References ct, QCOLOR_REAL_RANGE_CHECK, and qRound().

Referenced by QWidgetPrivate::drawWidget(), QCommonStyle::generatedIconPixmap(), qBrushSetAlphaF(), and QItemDelegate::selected().

{
    QCOLOR_REAL_RANGE_CHECK("QColor::setAlphaF", alpha);
    qreal tmp = alpha * USHRT_MAX;
    ct.argb.alpha = qRound(tmp);
}

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int QColor::red

(

)

const

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

int QColor::green

(

)

const

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

int QColor::blue

(

)

const

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

void QColor::setRed

(

int

red

)

Sets the red color component of this color to red. Int components are specified in the range 0-255.

See also:

red(), redF(), setRgb()

Definition at line 897 of file qcolor.cpp.

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

Referenced by mergedColors().

{
    QCOLOR_INT_RANGE_CHECK("QColor::setRed", red);
    if (cspec != Rgb)
        setRgb(red, green(), blue(), alpha());
    else
        ct.argb.red = red * 0x101;
}

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void QColor::setGreen

(

int

green

)

Sets the green color component of this color to green. Int components are specified in the range 0-255.

See also:

green(), greenF(), setRgb()

Definition at line 924 of file qcolor.cpp.

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

Referenced by mergedColors().

{
    QCOLOR_INT_RANGE_CHECK("QColor::setGreen", green);
    if (cspec != Rgb)
        setRgb(red(), green, blue(), alpha());
    else
        ct.argb.green = green * 0x101;
}

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void QColor::setBlue

(

int

blue

)

Sets the blue color component of this color to blue. Int components are specified in the range 0-255.

See also:

blue(), blueF(), setRgb()

Definition at line 953 of file qcolor.cpp.

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

Referenced by mergedColors().

{
    QCOLOR_INT_RANGE_CHECK("QColor::setBlue", blue);
    if (cspec != Rgb)
        setRgb(red(), green(), blue, alpha());
    else
        ct.argb.blue = blue * 0x101;
}

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qreal QColor::redF

(

)

const

Returns the red color component of this color.

See also:

setRedF(), red(), getRgbF()

Definition at line 967 of file qcolor.cpp.

References cspec, ct, Invalid, redF(), Rgb, and toRgb().

Referenced by PanelShape::animate(), qdesigner_internal::QtGradientStopsModel::color(), qdesigner_internal::QtColorLinePrivate::colorFromPoint(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), redF(), setBlueF(), QPdfEngine::setBrush(), QPSPrintEngine::setBrush(), setGreenF(), and qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeHue().

{
    if (cspec != Invalid && cspec != Rgb)
        return toRgb().redF();
    return ct.argb.red / qreal(USHRT_MAX);
}

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qreal QColor::greenF

(

)

const

Returns the green color component of this color.

See also:

setGreenF(), green(), getRgbF()

Definition at line 995 of file qcolor.cpp.

References cspec, ct, greenF(), Invalid, Rgb, and toRgb().

Referenced by PanelShape::animate(), qdesigner_internal::QtGradientStopsModel::color(), qdesigner_internal::QtColorLinePrivate::colorFromPoint(), greenF(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), setBlueF(), QPdfEngine::setBrush(), QPSPrintEngine::setBrush(), setRedF(), and qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeSaturation().

{
    if (cspec != Invalid && cspec != Rgb)
        return toRgb().greenF();
    return ct.argb.green / qreal(USHRT_MAX);
}

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qreal QColor::blueF

(

)

const

Returns the blue color component of this color.

See also:

setBlueF(), blue(), getRgbF()

Definition at line 1023 of file qcolor.cpp.

References blueF(), cspec, ct, Invalid, Rgb, and toRgb().

Referenced by PanelShape::animate(), blueF(), qdesigner_internal::QtGradientStopsModel::color(), qdesigner_internal::QtColorLinePrivate::colorFromPoint(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), QPdfEngine::setBrush(), QPSPrintEngine::setBrush(), setGreenF(), setRedF(), and qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeValue().

{
    if (cspec != Invalid && cspec != Rgb)
        return toRgb().blueF();
    return ct.argb.blue / qreal(USHRT_MAX);
}

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void QColor::setRedF

(

qreal

red

)

Sets the red color component of this color to red. Float components are specified in the range 0.0-1.0.

See also:

redF(), red(), setRgbF()

Definition at line 981 of file qcolor.cpp.

References alphaF(), blueF(), cspec, ct, greenF(), QCOLOR_REAL_RANGE_CHECK, qRound(), Rgb, and setRgbF().

Referenced by PanelShape::animate().

{
    QCOLOR_REAL_RANGE_CHECK("QColor::setRedF", red);
    if (cspec != Rgb)
        setRgbF(red, greenF(), blueF(), alphaF());
    else
        ct.argb.red = qRound(red * USHRT_MAX);
}

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void QColor::setGreenF

(

qreal

green

)

Sets the green color component of this color to green. Float components are specified in the range 0.0-1.0.

See also:

greenF(), green(), setRgbF()

Definition at line 1009 of file qcolor.cpp.

References alphaF(), blueF(), cspec, ct, QCOLOR_REAL_RANGE_CHECK, qRound(), redF(), Rgb, and setRgbF().

Referenced by PanelShape::animate().

{
    QCOLOR_REAL_RANGE_CHECK("QColor::setGreenF", green);
    if (cspec != Rgb)
        setRgbF(redF(), green, blueF(), alphaF());
    else
        ct.argb.green = qRound(green * USHRT_MAX);
}

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void QColor::setBlueF

(

qreal

blue

)

Sets the blue color component of this color to blue. Float components are specified in the range 0.0-1.0.

See also:

blueF(), blue(), setRgbF()

Definition at line 1036 of file qcolor.cpp.

References alphaF(), cspec, ct, greenF(), QCOLOR_REAL_RANGE_CHECK, qRound(), redF(), Rgb, and setRgbF().

Referenced by PanelShape::animate().

{
    QCOLOR_REAL_RANGE_CHECK("QColor::setBlueF", blue);
    if (cspec != Rgb)
        setRgbF(redF(), greenF(), blue, alphaF());
    else
        ct.argb.blue = qRound(blue * USHRT_MAX);
}

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void QColor::getRgb	(	int *	r,
		int *	g,
		int *	b,
		int *	a = 0
	)			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.

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

See also:

rgb(), setRgb()

Definition at line 681 of file qcolor.cpp.

References cspec, ct, getRgb(), Invalid, Rgb, and toRgb().

Referenced by getRgb().

{
    if (!r || !g || !b)
        return;

    if (cspec != Invalid && cspec != Rgb) {
        toRgb().getRgb(r, g, b, a);
        return;
    }

    *r = ct.argb.red   >> 8;
    *g = ct.argb.green >> 8;
    *b = ct.argb.blue  >> 8;

    if (a)
        *a = ct.argb.alpha >> 8;
}

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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 743 of file qcolor.cpp.

References cspec, ct, invalidate(), qWarning(), and Rgb.

Referenced by Q3ColorDrag::decode(), operator>>(), qBrushDark(), qBrushLight(), qBrushSetAlphaF(), QColor(), setBlue(), setGreen(), setNamedColor(), and setRed().

{
    if ((uint)r > 255 || (uint)g > 255 || (uint)b > 255 || (uint)a > 255) {
        qWarning("QColor::setRgb: RGB parameters out of range");
        invalidate();
        return;
    }

    cspec = Rgb;
    ct.argb.alpha = a * 0x101;
    ct.argb.red   = r * 0x101;
    ct.argb.green = g * 0x101;
    ct.argb.blue  = b * 0x101;
    ct.argb.pad   = 0;
}

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void QColor::getRgbF	(	qreal *	r,
		qreal *	g,
		qreal *	b,
		qreal *	a = 0
	)			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.

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

See also:

rgb(), setRgb()

Definition at line 652 of file qcolor.cpp.

References cspec, ct, getRgbF(), Invalid, Rgb, and toRgb().

Referenced by getRgbF().

{
    if (!r || !g || !b)
        return;

    if (cspec != Invalid && cspec != Rgb) {
        toRgb().getRgbF(r, g, b, a);
        return;
    }

    *r = ct.argb.red   / qreal(USHRT_MAX);
    *g = ct.argb.green / qreal(USHRT_MAX);
    *b = ct.argb.blue  / qreal(USHRT_MAX);

    if (a)
        *a = ct.argb.alpha / qreal(USHRT_MAX);

}

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

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

All values must be in the range 0.0-1.0.

See also:

rgb(), getRgbF(), setRgb()

Definition at line 716 of file qcolor.cpp.

References cspec, ct, invalidate(), qRound(), qWarning(), and Rgb.

Referenced by qdesigner_internal::QtGradientStopsModel::color(), setBlueF(), setGreenF(), and setRedF().

{
    if (r < 0.0 || r > 1.0
        || g < 0.0 || g > 1.0
        || b < 0.0 || b > 1.0
        || a < 0.0 || a > 1.0) {
        qWarning("QColor::setRgbF: RGB parameters out of range");
        invalidate();
        return;
    }

    cspec = Rgb;
    ct.argb.alpha = qRound(a * USHRT_MAX);
    ct.argb.red   = qRound(r * USHRT_MAX);
    ct.argb.green = qRound(g * USHRT_MAX);
    ct.argb.blue  = qRound(b * USHRT_MAX);
    ct.argb.pad   = 0;
}

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QRgb QColor::rgba

(

)

const

Returns the RGB value of the color. Note that unlike rgb(), the alpha is not stripped.

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

See also:

setRgba(), rgb()

Definition at line 778 of file qcolor.cpp.

References cspec, ct, Invalid, qRgba(), Rgb, rgba(), and toRgb().

Referenced by QRasterBuffer::colorizeBitmap(), QPixmap::createMaskFromColor(), QCleanlooksStyle::drawComplexControl(), QPlastiqueStyle::drawComplexControl(), QPlastiqueStyle::drawControl(), QPixmap::fill(), qBrushDark(), qBrushLight(), qBrushSetAlphaF(), qt_plastique_draw_gradient(), qt_plastique_draw_handle(), rgba(), QSpanData::setup(), qdesigner_internal::QtColorButtonPrivate::slotEditColor(), QStyleSheetStyle::styleHint(), QCommonStyle::styleHint(), and QX11PaintEngine::updatePen().

{
    if (cspec != Invalid && cspec != Rgb)
        return toRgb().rgba();
    return qRgba(ct.argb.red >> 8, ct.argb.green >> 8, ct.argb.blue >> 8, ct.argb.alpha >> 8);
}

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void QColor::setRgba

(

QRgb

rgba

)

Sets the RGBA value to rgba. Note that unlike setRgb(QRgb rgb), this function does not ignore the alpha.

See also:

rgba(), rgb()

Definition at line 791 of file qcolor.cpp.

References cspec, ct, qAlpha(), qBlue(), qGreen(), qRed(), and Rgb.

{
    cspec = Rgb;
    ct.argb.alpha = qAlpha(rgba) * 0x101;
    ct.argb.red   = qRed(rgba)   * 0x101;
    ct.argb.green = qGreen(rgba) * 0x101;
    ct.argb.blue  = qBlue(rgba)  * 0x101;
    ct.argb.pad   = 0;
}

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QRgb QColor::rgb

(

)

const

Returns the RGB value of the color. The alpha is stripped for compatibility.

See also:

getRgb(), rgba()

Definition at line 808 of file qcolor.cpp.

References cspec, ct, Invalid, qRgb(), Rgb, rgb(), and toRgb().

Referenced by QMessageBox::aboutQt(), QColorWell::dropEvent(), QColorShowLabel::dropEvent(), Q3TextFormat::getKey(), QColorDialog::getRgba(), Q3TextFormat::makeFormatChangeTags(), Q3TextFormat::makeFormatEndTags(), operator<<(), QCleanlooksStyle::polish(), rgb(), QColorDialog::selectColor(), QPainter::setBackground(), QPainter::setBrush(), QGLColormap::setEntry(), setNamedColor(), QPainter::setPen(), QMotifStyle::standardPixmap(), QCommonStyle::styleHint(), QCleanlooksStyle::styleHint(), and QX11PaintEngine::updatePen().

{
    if (cspec != Invalid && cspec != Rgb)
        return toRgb().rgb();
    return qRgb(ct.argb.red >> 8, ct.argb.green >> 8, ct.argb.blue >> 8);
}

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void QColor::setRgb

(

QRgb

rgb

)

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, ignoring the alpha.

Definition at line 820 of file qcolor.cpp.

References cspec, ct, qBlue(), qGreen(), qRed(), and Rgb.

{
    cspec = Rgb;
    ct.argb.alpha = 0xffff;
    ct.argb.red   = qRed(rgb)   * 0x101;
    ct.argb.green = qGreen(rgb) * 0x101;
    ct.argb.blue  = qBlue(rgb)  * 0x101;
    ct.argb.pad   = 0;
}

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int QColor::hue

(

)

const

Referenced by toHsv().

int QColor::saturation

(

)

const

int QColor::value

(

)

const

qreal QColor::hueF

(

)

const

Returns the hue color component of this color.

See also:

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

Definition at line 1090 of file qcolor.cpp.

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

Referenced by qdesigner_internal::QtColorLinePrivate::colorFromPoint(), hueF(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), and qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeHue().

{
    if (cspec != Invalid && cspec != Hsv)
        return toHsv().hueF();
    return ct.ahsv.hue == USHRT_MAX ? -1.0 : ct.ahsv.hue / 36000.0;
}

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qreal QColor::saturationF

(

)

const

Returns the saturation color component of this color.

See also:

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

Definition at line 1103 of file qcolor.cpp.

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

Referenced by qdesigner_internal::QtColorLinePrivate::checkColor(), qdesigner_internal::QtColorLinePrivate::colorFromPoint(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), saturationF(), and qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeSaturation().

{
    if (cspec != Invalid && cspec != Hsv)
        return toHsv().saturationF();
    return ct.ahsv.saturation / qreal(USHRT_MAX);
}

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qreal QColor::valueF

(

)

const

Returns the value color component of this color.

See also:

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

Definition at line 1116 of file qcolor.cpp.

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

Referenced by qdesigner_internal::QtColorLinePrivate::checkColor(), qdesigner_internal::QtColorLinePrivate::colorFromPoint(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), qdesigner_internal::QtGradientStopsEditorPrivate::slotChangeValue(), and valueF().

{
    if (cspec != Invalid && cspec != Hsv)
        return toHsv().valueF();
    return ct.ahsv.value / qreal(USHRT_MAX);
}

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void QColor::getHsv	(	int *	h,
		int *	s,
		int *	v,
		int *	a = 0
	)			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.

Note that the 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 569 of file qcolor.cpp.

References cspec, ct, getHsv(), Hsv, Invalid, and toHsv().

Referenced by QCommonStyle::drawPrimitive(), getHsv(), QPalette::QPalette(), qt_palette_from_color(), qt_set_x11_resources(), and QInputContext::standardFormat().

{
    if (!h || !s || !v)
        return;

    if (cspec != Invalid && cspec != Hsv) {
        toHsv().getHsv(h, s, v, a);
        return;
    }

    *h = ct.ahsv.hue == USHRT_MAX ? -1 : ct.ahsv.hue / 100;
    *s = ct.ahsv.saturation >> 8;
    *v = ct.ahsv.value      >> 8;

    if (a)
        *a = ct.ahsv.alpha >> 8;
}

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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 626 of file qcolor.cpp.

References cspec, ct, Hsv, invalidate(), and qWarning().

Referenced by QCleanlooksStyle::drawComplexControl(), QCleanlooksStyle::drawControl(), QCleanlooksStyle::drawPrimitive(), WigglyWidget::paintEvent(), QColor(), qt_cleanlooks_draw_mdibutton(), qt_set_x11_resources(), and QInputContext::standardFormat().

{
    if (h < -1 || (uint)s > 255 || (uint)v > 255 || (uint)a > 255) {
        qWarning("QColor::setHsv: HSV parameters out of range");
        invalidate();
        return;
    }

    cspec = Hsv;
    ct.ahsv.alpha      = a * 0x101;
    ct.ahsv.hue        = h == -1 ? USHRT_MAX : (h % 360) * 100;
    ct.ahsv.saturation = s * 0x101;
    ct.ahsv.value      = v * 0x101;
    ct.ahsv.pad        = 0;
}

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void QColor::getHsvF	(	qreal *	h,
		qreal *	s,
		qreal *	v,
		qreal *	a = 0
	)			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.

Note that the 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 541 of file qcolor.cpp.

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

Referenced by getHsvF().

{
        if (!h || !s || !v)
        return;

    if (cspec != Invalid && cspec != Hsv) {
        toHsv().getHsvF(h, s, v, a);
        return;
    }

    *h = ct.ahsv.hue == USHRT_MAX ? -1.0 : ct.ahsv.hue / 36000.0;
    *s = ct.ahsv.saturation / qreal(USHRT_MAX);
    *v = ct.ahsv.value / qreal(USHRT_MAX);

    if (a)
        *a = ct.ahsv.alpha / qreal(USHRT_MAX);
}

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void QColor::setHsvF	(	qreal	h,
		qreal	s,
		qreal	v,
		qreal	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 597 of file qcolor.cpp.

References cspec, ct, Hsv, qRound(), and qWarning().

Referenced by qdesigner_internal::QtColorLinePrivate::checkColor().

{
    if (((h < 0.0 || h > 1.0) && h != -1.0)
        || (s < 0.0 || s > 1.0)
        || (v < 0.0 || v > 1.0)
        || (a < 0.0 || a > 1.0)) {
        qWarning("QColor::setHsvF: HSV parameters out of range");
        return;
    }

    cspec = Hsv;
    ct.ahsv.alpha      = qRound(a * USHRT_MAX);
    ct.ahsv.hue        = h == -1.0 ? USHRT_MAX : qRound(h * 36000);
    ct.ahsv.saturation = qRound(s * USHRT_MAX);
    ct.ahsv.value      = qRound(v * USHRT_MAX);
    ct.ahsv.pad        = 0;
}

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int QColor::cyan

(

)

const

int QColor::magenta

(

)

const

int QColor::yellow

(

)

const

int QColor::black

(

)

const

qreal QColor::cyanF

(

)

const

Returns the cyan color component of this color.

See also:

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

Definition at line 1182 of file qcolor.cpp.

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

Referenced by cyanF().

{
    if (cspec != Invalid && cspec != Cmyk)
        return toCmyk().cyanF();
    return ct.acmyk.cyan / qreal(USHRT_MAX);
}

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qreal QColor::magentaF

(

)

const

Returns the magenta color component of this color.

See also:

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

Definition at line 1195 of file qcolor.cpp.

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

Referenced by magentaF().

{
    if (cspec != Invalid && cspec != Cmyk)
        return toCmyk().magentaF();
    return ct.acmyk.magenta / qreal(USHRT_MAX);
}

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qreal QColor::yellowF

(

)

const

Returns the yellow color component of this color.

See also:

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

Definition at line 1208 of file qcolor.cpp.

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

Referenced by yellowF().

{
    if (cspec != Invalid && cspec != Cmyk)
        return toCmyk().yellowF();
    return ct.acmyk.yellow / qreal(USHRT_MAX);
}

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qreal QColor::blackF

(

)

const

Returns the black color component of this color.

See also:

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

Definition at line 1221 of file qcolor.cpp.

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

Referenced by blackF().

{
    if (cspec != Invalid && cspec != Cmyk)
        return toCmyk().blackF();
    return ct.acmyk.black / qreal(USHRT_MAX);
}

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void QColor::getCmyk	(	int *	c,
		int *	m,
		int *	y,
		int *	k,
		int *	a = 0
	)

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.

Note that the 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 1602 of file qcolor.cpp.

References Cmyk, cspec, ct, getCmyk(), Invalid, and toCmyk().

Referenced by getCmyk().

{
    if (!c || !m || !y || !k)
        return;

    if (cspec != Invalid && cspec != Cmyk) {
        toCmyk().getCmyk(c, m, y, k, a);
        return;
    }

    *c = ct.acmyk.cyan >> 8;
    *m = ct.acmyk.magenta >> 8;
    *y = ct.acmyk.yellow >> 8;
    *k = ct.acmyk.black >> 8;

    if (a)
        *a = ct.acmyk.alpha >> 8;
}

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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 1659 of file qcolor.cpp.

References Cmyk, cspec, ct, and qWarning().

Referenced by QColor().

{
    if (c < 0 || c > 255
        || m < 0 || m > 255
        || y < 0 || y > 255
        || k < 0 || k > 255
        || a < 0 || a > 255) {
        qWarning("QColor::setCmyk: CMYK parameters out of range");
        return;
    }

    cspec = Cmyk;
    ct.acmyk.alpha   = a * 0x101;
    ct.acmyk.cyan    = c * 0x101;
    ct.acmyk.magenta = m * 0x101;
    ct.acmyk.yellow  = y * 0x101;
    ct.acmyk.black   = k * 0x101;
}

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void QColor::getCmykF	(	qreal *	c,
		qreal *	m,
		qreal *	y,
		qreal *	k,
		qreal *	a = 0
	)

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.

Note that the 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 1631 of file qcolor.cpp.

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

Referenced by getCmykF().

{
    if (!c || !m || !y || !k)
        return;

    if (cspec != Invalid && cspec != Cmyk) {
        toCmyk().getCmykF(c, m, y, k, a);
        return;
    }

    *c = ct.acmyk.cyan    / qreal(USHRT_MAX);
    *m = ct.acmyk.magenta / qreal(USHRT_MAX);
    *y = ct.acmyk.yellow  / qreal(USHRT_MAX);
    *k = ct.acmyk.black   / qreal(USHRT_MAX);

    if (a)
        *a = ct.acmyk.alpha / qreal(USHRT_MAX);
}

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void QColor::setCmykF	(	qreal	c,
		qreal	m,
		qreal	y,
		qreal	k,
		qreal	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 1689 of file qcolor.cpp.

References Cmyk, cspec, ct, qRound(), and qWarning().

{
    if (c < 0.0 || c > 1.0
        || m < 0.0 || m > 1.0
        || y < 0.0 || y > 1.0
        || k < 0.0 || k > 1.0
        || a < 0.0 || a > 1.0) {
        qWarning("QColor::setCmykF: CMYK parameters out of range");
        return;
    }

    cspec = Cmyk;
    ct.acmyk.alpha   = qRound(a * USHRT_MAX);
    ct.acmyk.cyan    = qRound(c * USHRT_MAX);
    ct.acmyk.magenta = qRound(m * USHRT_MAX);
    ct.acmyk.yellow  = qRound(y * USHRT_MAX);
    ct.acmyk.black   = qRound(k * USHRT_MAX);
}

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QColor QColor::toRgb

(

)

const

Create and returns an RGB QColor based on this color.

See also:

fromRgb(), convertTo(), isValid()

Definition at line 1233 of file qcolor.cpp.

References argb, c, Cmyk, cspec, ct, h, Hsv, i, int, isValid(), m, p, qRound(), Rgb, s, t, and y.

Referenced by blueF(), qdesigner_internal::QtColorLinePrivate::checkColor(), convertTo(), getRgb(), getRgbF(), greenF(), QColormap::pixel(), redF(), rgb(), rgba(), toCmyk(), and toHsv().

{
    if (!isValid() || cspec == Rgb)
        return *this;

    QColor color;
    color.cspec = Rgb;
    color.ct.argb.alpha = ct.argb.alpha;
    color.ct.argb.pad = 0;

    switch (cspec) {
    case Hsv:
        {
            if (ct.ahsv.saturation == 0 || ct.ahsv.hue == USHRT_MAX) {
                // achromatic case
                color.ct.argb.red = color.ct.argb.green = color.ct.argb.blue = ct.ahsv.value;
                break;
            }

            // chromatic case
            const qreal h = ct.ahsv.hue / 6000.;
            const qreal s = ct.ahsv.saturation / qreal(USHRT_MAX);
            const qreal v = ct.ahsv.value / qreal(USHRT_MAX);
            const int i = int(h);
            const qreal f = h - i;
            const qreal p = v * (1.0 - s);

            if (i & 1) {
                const qreal q = v * (1.0 - (s * f));

                switch (i) {
                case 1:
                    color.ct.argb.red   = qRound(q * USHRT_MAX);
                    color.ct.argb.green = qRound(v * USHRT_MAX);
                    color.ct.argb.blue  = qRound(p * USHRT_MAX);
                    break;
                case 3:
                    color.ct.argb.red   = qRound(p * USHRT_MAX);
                    color.ct.argb.green = qRound(q * USHRT_MAX);
                    color.ct.argb.blue  = qRound(v * USHRT_MAX);
                    break;
                case 5:
                    color.ct.argb.red   = qRound(v * USHRT_MAX);
                    color.ct.argb.green = qRound(p * USHRT_MAX);
                    color.ct.argb.blue  = qRound(q * USHRT_MAX);
                    break;
                }
            } else {
                const qreal t = v * (1.0 - (s * (1.0 - f)));

                switch (i) {
                case 0:
                    color.ct.argb.red   = qRound(v * USHRT_MAX);
                    color.ct.argb.green = qRound(t * USHRT_MAX);
                    color.ct.argb.blue  = qRound(p * USHRT_MAX);
                    break;
                case 2:
                    color.ct.argb.red   = qRound(p * USHRT_MAX);
                    color.ct.argb.green = qRound(v * USHRT_MAX);
                    color.ct.argb.blue  = qRound(t * USHRT_MAX);
                    break;
                case 4:
                    color.ct.argb.red   = qRound(t * USHRT_MAX);
                    color.ct.argb.green = qRound(p * USHRT_MAX);
                    color.ct.argb.blue  = qRound(v * USHRT_MAX);
                    break;
                }
            }
            break;
        }
    case Cmyk:
        {
            const qreal c = ct.acmyk.cyan / qreal(USHRT_MAX);
            const qreal m = ct.acmyk.magenta / qreal(USHRT_MAX);
            const qreal y = ct.acmyk.yellow / qreal(USHRT_MAX);
            const qreal k = ct.acmyk.black / qreal(USHRT_MAX);

            color.ct.argb.red   = qRound((1.0 - (c * (1.0 - k) + k)) * USHRT_MAX);
            color.ct.argb.green = qRound((1.0 - (m * (1.0 - k) + k)) * USHRT_MAX);
            color.ct.argb.blue  = qRound((1.0 - (y * (1.0 - k) + k)) * USHRT_MAX);
            break;
        }
    default:
        break;
    }

    return color;
}

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QColor QColor::toHsv

(

)

const

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 1333 of file qcolor.cpp.

References ahsv, b, cspec, ct, g, Hsv, hue(), isValid(), Q_MAX_3, Q_MIN_3, qRound(), Rgb, toHsv(), and toRgb().

Referenced by qdesigner_internal::QtColorLinePrivate::checkColor(), convertTo(), dark(), getHsv(), getHsvF(), hueF(), light(), saturationF(), toHsv(), and valueF().

{
    if (!isValid())
        return *this;

    if (cspec != Rgb)
        return toRgb().toHsv();

    QColor color;
    color.cspec = Hsv;
    color.ct.ahsv.alpha = ct.argb.alpha;
    color.ct.ahsv.pad = 0;

    const qreal r = ct.argb.red   / qreal(USHRT_MAX);
    const qreal g = ct.argb.green / qreal(USHRT_MAX);
    const qreal b = ct.argb.blue  / qreal(USHRT_MAX);
    const qreal max = Q_MAX_3(r, g, b);
    const qreal min = Q_MIN_3(r, g, b);
    const qreal delta = max - min;
    color.ct.ahsv.value = qRound(max * USHRT_MAX);
    if (delta == 0.0) {
        // achromatic case, hue is undefined
        color.ct.ahsv.hue = USHRT_MAX;
        color.ct.ahsv.saturation = 0;
    } else {
        // chromatic case
        qreal hue = 0;
        color.ct.ahsv.saturation = qRound((delta / max) * USHRT_MAX);
        if (r == max) {
            hue = ((g - b) /delta);
        } else if (g == max) {
            hue = (2.0 + (b - r) / delta);
        } else if (b == max) {
            hue = (4.0 + (r - g) / delta);
        } else {
            Q_ASSERT_X(false, "QColor::toHsv", "internal error");
        }
        hue *= 60.0;
        if (hue < 0.0)
            hue += 360.0;
        color.ct.ahsv.hue = qRound(hue * 100);
    }

    return color;
}

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QColor QColor::toCmyk

(

)

const

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 1385 of file qcolor.cpp.

References acmyk, b, c, Cmyk, cspec, ct, g, isValid(), m, qMin(), qRound(), Rgb, toCmyk(), toRgb(), and y.

Referenced by blackF(), convertTo(), cyanF(), getCmyk(), getCmykF(), magentaF(), toCmyk(), and yellowF().

{
    if (!isValid())
        return *this;
    if (cspec != Rgb)
        return toRgb().toCmyk();

    QColor color;
    color.cspec = Cmyk;
    color.ct.acmyk.alpha = ct.argb.alpha;

    // rgb -> cmy
    const qreal r = ct.argb.red   / qreal(USHRT_MAX);
    const qreal g = ct.argb.green / qreal(USHRT_MAX);
    const qreal b = ct.argb.blue  / qreal(USHRT_MAX);
    qreal c = 1.0 - r;
    qreal m = 1.0 - g;
    qreal y = 1.0 - b;

    // cmy -> cmyk
    const qreal k = qMin(c, qMin(m, y));

    if (!qFuzzyCompare(k,1)) {
        c = (c - k) / (1.0 - k);
        m = (m - k) / (1.0 - k);
        y = (y - k) / (1.0 - k);
    }

    color.ct.acmyk.cyan    = qRound(c * USHRT_MAX);
    color.ct.acmyk.magenta = qRound(m * USHRT_MAX);
    color.ct.acmyk.yellow  = qRound(y * USHRT_MAX);
    color.ct.acmyk.black   = qRound(k * USHRT_MAX);

    return color;
}

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QColor QColor::convertTo

(

QColor::Spec

colorSpec

)

const

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

See also:

spec(), toCmyk(), toHsv(), toRgb(), isValid()

Definition at line 1421 of file qcolor.cpp.

References Cmyk, cspec, Hsv, Invalid, QColor(), Rgb, toCmyk(), toHsv(), and toRgb().

Referenced by dark(), and light().

{
    if (colorSpec == cspec)
        return *this;
    switch (colorSpec) {
    case Rgb:
        return toRgb();
    case Hsv:
        return toHsv();
    case Cmyk:
        return toCmyk();
    case Invalid:
        break;
    }
    return QColor(); // must be invalid
}

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QColor QColor::fromRgb

(

QRgb

rgb

)

[static]

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

Note that 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 1450 of file qcolor.cpp.

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

Referenced by fromRgba(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qdesigner_internal::QtBrushButton::QtBrushButton(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), QAbstractFormBuilder::setupBrush(), qdesigner_internal::QtBrushButtonPrivate::slotEditBrush(), and qdesigner_internal::QtBrushEditorPrivate::slotPatternChooserClicked().

{
    return fromRgb(qRed(rgb), qGreen(rgb), qBlue(rgb));
}

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QColor QColor::fromRgba

(

QRgb

rgba

)

[static]

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

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

See also:

fromRgb(), isValid()

Definition at line 1466 of file qcolor.cpp.

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

Referenced by GradientWidget::setDefault().

{
    return fromRgb(qRed(rgba), qGreen(rgba), qBlue(rgba), qAlpha(rgba));
}

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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(), fromRgbF(), isValid()

Definition at line 1480 of file qcolor.cpp.

References argb, cspec, ct, QColor(), qWarning(), and Rgb.

{
    if (r < 0 || r > 255
        || g < 0 || g > 255
        || b < 0 || b > 255
        || a < 0 || a > 255) {
        qWarning("QColor::fromRgb: RGB parameters out of range");
        return QColor();
    }

    QColor color;
    color.cspec = Rgb;
    color.ct.argb.alpha = a * 0x101;
    color.ct.argb.red   = r * 0x101;
    color.ct.argb.green = g * 0x101;
    color.ct.argb.blue  = b * 0x101;
    color.ct.argb.pad   = 0;
    return color;
}

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QColor QColor::fromRgbF	(	qreal	r,
		qreal	g,
		qreal	b,
		qreal	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).

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

See also:

fromRgb(), toRgb(), isValid()

Definition at line 1509 of file qcolor.cpp.

References argb, cspec, ct, QColor(), qRound(), qWarning(), and Rgb.

Referenced by qdesigner_internal::QtGradientStopsModel::color(), qdesigner_internal::QtGradientWidget::paintEvent(), and query_colormap().

{
    if (r < 0.0 || r > 1.0
        || g < 0.0 || g > 1.0
        || b < 0.0 || b > 1.0
        || a < 0.0 || a > 1.0) {
        qWarning("QColor::fromRgbF: RGB parameters out of range");
        return QColor();
    }

    QColor color;
    color.cspec = Rgb;
    color.ct.argb.alpha = qRound(a * USHRT_MAX);
    color.ct.argb.red   = qRound(r * USHRT_MAX);
    color.ct.argb.green = qRound(g * USHRT_MAX);
    color.ct.argb.blue  = qRound(b * USHRT_MAX);
    color.ct.argb.pad   = 0;
    return color;
}

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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 1540 of file qcolor.cpp.

References ahsv, cspec, ct, Hsv, QColor(), and qWarning().

Referenced by qdesigner_internal::QtColorLinePrivate::hueGradientPixmap(), SortingBox::initialItemColor(), SortingBox::randomItemColor(), and qdesigner_internal::QtColorLinePrivate::recreateMainPixmap().

{
    if (((h < 0 || h >= 360) && h != -1)
        || s < 0 || s > 255
        || v < 0 || v > 255
        || a < 0 || a > 255) {
        qWarning("QColor::fromHsv: HSV parameters out of range");
        return QColor();
    }

    QColor color;
    color.cspec = Hsv;
    color.ct.ahsv.alpha      = a * 0x101;
    color.ct.ahsv.hue        = h == -1 ? USHRT_MAX : (h % 360) * 100;
    color.ct.ahsv.saturation = s * 0x101;
    color.ct.ahsv.value      = v * 0x101;
    color.ct.ahsv.pad        = 0;
    return color;
}

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QColor QColor::fromHsvF	(	qreal	h,
		qreal	s,
		qreal	v,
		qreal	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 1572 of file qcolor.cpp.

References ahsv, cspec, ct, Hsv, QColor(), qRound(), and qWarning().

Referenced by CompositionRenderer::drawSource().

{
    if (((h < 0.0 || h > 1.0) && h != -1.0)
        || (s < 0.0 || s > 1.0)
        || (v < 0.0 || v > 1.0)
        || (a < 0.0 || a > 1.0)) {
        qWarning("QColor::fromHsvF: HSV parameters out of range");
        return QColor();
    }

    QColor color;
    color.cspec = Hsv;
    color.ct.ahsv.alpha      = qRound(a * USHRT_MAX);
    color.ct.ahsv.hue        = h == -1.0 ? USHRT_MAX : qRound(h * 36000);
    color.ct.ahsv.saturation = qRound(s * USHRT_MAX);
    color.ct.ahsv.value      = qRound(v * USHRT_MAX);
    color.ct.ahsv.pad        = 0;
    return color;
}

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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 1719 of file qcolor.cpp.

References acmyk, Cmyk, cspec, ct, QColor(), and qWarning().

{
    if (c < 0 || c > 255
        || m < 0 || m > 255
        || y < 0 || y > 255
        || k < 0 || k > 255
        || a < 0 || a > 255) {
        qWarning("QColor::fromCmyk: CMYK parameters out of range");
        return QColor();
    }

    QColor color;
    color.cspec = Cmyk;
    color.ct.acmyk.alpha   = a * 0x101;
    color.ct.acmyk.cyan    = c * 0x101;
    color.ct.acmyk.magenta = m * 0x101;
    color.ct.acmyk.yellow  = y * 0x101;
    color.ct.acmyk.black   = k * 0x101;
    return color;
}

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QColor QColor::fromCmykF	(	qreal	c,
		qreal	m,
		qreal	y,
		qreal	k,
		qreal	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 1753 of file qcolor.cpp.

References acmyk, Cmyk, cspec, ct, QColor(), qRound(), and qWarning().

{
    if (c < 0.0 || c > 1.0
        || m < 0.0 || m > 1.0
        || y < 0.0 || y > 1.0
        || k < 0.0 || k > 1.0
        || a < 0.0 || a > 1.0) {
        qWarning("QColor::fromCmykF: CMYK parameters out of range");
        return QColor();
    }

    QColor color;
    color.cspec = Cmyk;
    color.ct.acmyk.alpha   = qRound(a * USHRT_MAX);
    color.ct.acmyk.cyan    = qRound(c * USHRT_MAX);
    color.ct.acmyk.magenta = qRound(m * USHRT_MAX);
    color.ct.acmyk.yellow  = qRound(y * USHRT_MAX);
    color.ct.acmyk.black   = qRound(k * USHRT_MAX);
    return color;
}

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QColor QColor::light

(

int

factor = 150

)

const

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 dark() function for this purpose. If the factor is 0 or negative, the return value is unspecified.

The function converts the current RGB color to HSV, multiplies the value (V) component by factor and converts the color back to RGB.

See also:

dark(), isValid()

Definition at line 1791 of file qcolor.cpp.

References ahsv, convertTo(), cspec, ct, dark(), s, and toHsv().

Referenced by PaletteEditorAdvanced::buildDisabledEffect(), MainWindow::buildDisabledEffect(), PaletteEditorAdvanced::buildInactiveEffect(), MainWindow::buildInactiveEffect(), Calculator::Calculator(), dark(), QCleanlooksStyle::drawComplexControl(), QPlastiqueStyle::drawComplexControl(), QPlastiqueStyle::drawControl(), QCleanlooksStyle::drawControl(), QMotifStyle::drawControl(), QCleanlooksStyle::drawPrimitive(), QMotifStyle::drawPrimitive(), QPlastiqueStyle::drawPrimitive(), CompositionRenderer::drawSource(), TetrixBoard::drawSquare(), Chip::paint(), RobotLimb::paint(), RobotTorso::paint(), RobotHead::paint(), PreviewView::paintPage(), QCleanlooksStyle::polish(), qBrushLight(), qt_cleanlooks_draw_mdibutton(), qt_plastique_drawFrame(), qt_plastique_drawShadedPanel(), qt_set_x11_resources(), QCleanlooksStyle::standardPalette(), and SpreadSheet::updateColor().

{
    if (factor <= 0)                                // invalid lightness factor
        return *this;
    else if (factor < 100)                        // makes color darker
        return dark(10000/factor);

    QColor hsv = toHsv();
    int s = hsv.ct.ahsv.saturation;
    int v = hsv.ct.ahsv.value;

    v = (factor*v)/100;
    if (v > USHRT_MAX) {
        // overflow... adjust saturation
        s -= v - USHRT_MAX;
        if (s < 0)
            s = 0;
        v = USHRT_MAX;
    }

    hsv.ct.ahsv.saturation = s;
    hsv.ct.ahsv.value = v;

    // convert back to same color spec as original color
    return hsv.convertTo(cspec);
}

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QColor QColor::dark

(

int

factor = 200

)

const

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 light() function for this purpose. If the factor is 0 or negative, the return value is unspecified.

The function converts the current RGB color to HSV, divides the value (V) component by factor and converts the color back to RGB.

See also:

light(), isValid()

Definition at line 1835 of file qcolor.cpp.

References ahsv, convertTo(), cspec, ct, light(), and toHsv().

Referenced by PaletteEditorAdvanced::buildDisabledEffect(), MainWindow::buildDisabledEffect(), PaletteEditorAdvanced::buildInactiveEffect(), MainWindow::buildInactiveEffect(), QCleanlooksStyle::drawComplexControl(), QPlastiqueStyle::drawComplexControl(), QPlastiqueStyle::drawControl(), QCleanlooksStyle::drawControl(), QMotifStyle::drawControl(), QWindowsXPStyle::drawControl(), QCommonStyle::drawControl(), QCleanlooksStyle::drawPrimitive(), QMotifStyle::drawPrimitive(), QPlastiqueStyle::drawPrimitive(), CompositionRenderer::drawSource(), TetrixBoard::drawSquare(), GLWidget::extrude(), light(), Chip::paint(), QMotifStyle::polish(), QPlastiqueStyle::polish(), NorwegianWoodStyle::polish(), QWindowsXPStyle::polish(), qBrushDark(), qt_cleanlooks_draw_mdibutton(), qt_plastique_draw_handle(), qt_plastique_drawFrame(), qt_plastique_drawShadedPanel(), qt_set_x11_resources(), QCleanlooksStyle::standardPalette(), QCleanlooksStyle::styleHint(), and SpreadSheet::updateColor().

{
    if (factor <= 0)                                // invalid darkness factor
        return *this;
    else if (factor < 100)                        // makes color lighter
        return light(10000/factor);

    QColor hsv = toHsv();
    hsv.ct.ahsv.value = (hsv.ct.ahsv.value * 100) / factor;

    // convert back to same color spec as original color
    return hsv.convertTo(cspec);
}

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QColor & QColor::operator=

(

const QColor &

color

)

Assigns a copy of the color color to this color, and returns a reference to it.

Definition at line 1853 of file qcolor.cpp.

References argb, cspec, and ct.

Referenced by operator=().

{
    cspec = color.cspec;
    ct.argb = color.ct.argb;
    return *this;
}

QColor & QColor::operator=

(

Qt::GlobalColor

color

)

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 the color and returns a reference to this color.

Definition at line 1863 of file qcolor.cpp.

References operator=(), and QColor().

{
    return operator=(QColor(color));
}

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bool QColor::operator==

(

const QColor &

color

)

const

Returns true if this color has the same RGB value as the color color; otherwise returns false.

Definition at line 1872 of file qcolor.cpp.

References argb, cspec, and ct.

Referenced by operator!=().

{
    return (cspec == color.cspec
            && ct.argb.alpha == color.ct.argb.alpha
            && ct.argb.red   == color.ct.argb.red
            && ct.argb.green == color.ct.argb.green
            && ct.argb.blue  == color.ct.argb.blue
            && ct.argb.pad   == color.ct.argb.pad);
}

bool QColor::operator!=

(

const QColor &

color

)

const

Returns true if this color has a different RGB value from the color color; otherwise returns false.

Definition at line 1886 of file qcolor.cpp.

References operator==().

{ return !operator==(color); }

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QColor::operator QVariant

(

)

const

Returns the color as a QVariant

Definition at line 1893 of file qcolor.cpp.

References QVariant::Color.

{
    return QVariant(QVariant::Color, this);
}

void QColor::invalidate

(

)

[private]

Definition at line 1903 of file qcolor.cpp.

References cspec, ct, and Invalid.

Referenced by QColor(), setHsv(), setNamedColor(), setRgb(), and setRgbF().

{
    cspec = Invalid;
    ct.argb.alpha = USHRT_MAX;
    ct.argb.red = 0;
    ct.argb.green = 0;
    ct.argb.blue = 0;
    ct.argb.pad = 0;
}

---

Friends And Related Function Documentation

friend class QColormap [friend]

Definition at line 212 of file qcolor.h.

QDataStream & operator<<	(	QDataStream &	stream,
		const QColor &	color
	)			[friend]

Writes the color to the stream.

See also:

{Format of the QDataStream Operators}

Definition at line 1973 of file qcolor.cpp.

{
    if (stream.version() < 7) {
        quint32 p = (quint32)color.rgb();
        if (stream.version() == 1) // Swap red and blue
            p = ((p << 16) & 0xff0000) | ((p >> 16) & 0xff) | (p & 0xff00ff00);
        return stream << p;
    }

    qint8   s = color.cspec;
    quint16 a = color.ct.argb.alpha;
    quint16 r = color.ct.argb.red;
    quint16 g = color.ct.argb.green;
    quint16 b = color.ct.argb.blue;
    quint16 p = color.ct.argb.pad;

    stream << s;
    stream << a;
    stream << r;
    stream << g;
    stream << b;
    stream << p;

    return stream;
}

QDataStream & operator>>	(	QDataStream &	stream,
		QColor &	color
	)			[friend]

Reads the color from the stream.

See also:

{ Format of the QDataStream Operators}

Definition at line 2007 of file qcolor.cpp.

{
    if (stream.version() < 7) {
        quint32 p;
        stream >> p;
        if (stream.version() == 1) // Swap red and blue
            p = ((p << 16) & 0xff0000) | ((p >> 16) & 0xff) | (p & 0xff00ff00);
        color.setRgb(p);
        return stream;
    }

    qint8 s;
    quint16 a, r, g, b, p;
    stream >> s;
    stream >> a;
    stream >> r;
    stream >> g;
    stream >> b;
    stream >> p;

    color.cspec = QColor::Spec(s);
    color.ct.argb.alpha = a;
    color.ct.argb.red   = r;
    color.ct.argb.green = g;
    color.ct.argb.blue  = b;
    color.ct.argb.pad   = p;

    return stream;
}

int qRed

(

QRgb

rgb

)

[related]

Returns the red component of the ARGB quadruplet rgb.

See also:

qRgb(), QColor::red()

Definition at line 37 of file qrgb.h.

Referenced by blendShade(), compress(), convert_RGB_to_Indexed8(), fromRgb(), fromRgba(), init_gray(), init_indexed(), main(), pixel_distance(), pnmscale(), QColor(), qGray(), qIsGray(), qStoreColors(), qt_write_dib(), query_colormap(), setRgb(), setRgba(), write_jpeg_image(), write_pbm_image(), and write_xpm_image().

{ return ((rgb >> 16) & 0xff); }

int qGreen

(

QRgb

rgb

)

[related]

Returns the green component of the ARGB quadruplet rgb.

See also:

qRgb(), QColor::green()

Definition at line 40 of file qrgb.h.

Referenced by blendShade(), compress(), convert_RGB_to_Indexed8(), fromRgb(), fromRgba(), init_gray(), init_indexed(), main(), pixel_distance(), pnmscale(), QColor(), qGray(), qIsGray(), qStoreColors(), qt_write_dib(), query_colormap(), setRgb(), setRgba(), write_jpeg_image(), write_pbm_image(), and write_xpm_image().

{ return ((rgb >> 8) & 0xff); }

int qBlue

(

QRgb

rgb

)

[related]

Returns the blue component of the ARGB quadruplet rgb.

See also:

qRgb(), QColor::blue()

Definition at line 43 of file qrgb.h.

Referenced by blendShade(), compress(), convert_RGB_to_Indexed8(), fromRgb(), fromRgba(), init_gray(), init_indexed(), main(), pixel_distance(), pnmscale(), QColor(), qGray(), qIsGray(), qStoreColors(), qt_write_dib(), query_colormap(), setRgb(), setRgba(), write_jpeg_image(), write_pbm_image(), and write_xpm_image().

{ return (rgb & 0xff); }

int qAlpha

(

QRgb

rgba

)

[related]

Returns the alpha component of the ARGB quadruplet rgba.

See also:

qRgb(), QColor::alpha()

Definition at line 46 of file qrgb.h.

Referenced by blend_color_argb(), blend_untransformed_argb(), blendShade(), comp_func_DestinationAtop(), comp_func_DestinationIn(), comp_func_DestinationOut(), comp_func_DestinationOver(), comp_func_solid_DestinationAtop(), comp_func_solid_DestinationIn(), comp_func_solid_DestinationOut(), comp_func_solid_DestinationOver(), comp_func_solid_SourceAtop(), comp_func_solid_SourceIn(), comp_func_solid_SourceOut(), comp_func_solid_SourceOver(), comp_func_solid_XOR(), comp_func_SourceAtop(), comp_func_SourceIn(), comp_func_SourceOut(), comp_func_SourceOver(), comp_func_XOR(), fix_color_table(), fromRgba(), getOperator(), main(), pixel_distance(), pnmscale(), QColor(), setRgba(), and write_xpm_image().

{ return ((rgb >> 24) & 0xff); }

QRgb qRgb	(	int	r,
		int	g,
		int	b
	)			[related]

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

See also:

qRgba(), qRed(), qGreen(), qBlue()

Definition at line 49 of file qrgb.h.

Referenced by convert_RGB_to_Indexed8(), init_gray(), init_indexed(), initRGB(), pnmscale(), qt_get_hex_rgb(), query_colormap(), read_dib_body(), read_jpeg_image(), read_pbm_body(), read_xbm_body(), rgb(), and setup_qt().

{ return (0xff << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }

QRgb qRgba	(	int	r,
		int	g,
		int	b,
		int	a
	)			[related]

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

See also:

qRgb(), qRed(), qGreen(), qBlue()

Definition at line 52 of file qrgb.h.

Referenced by blendShade(), main(), pnmscale(), rgba(), and setup_qt().

{ return ((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }

int qGray	(	int	r,
		int	g,
		int	b
	)			[related]

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

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

Definition at line 55 of file qrgb.h.

Referenced by compress(), destStoreMono(), destStoreMonoLsb(), dither_to_Mono(), qGray(), query_colormap(), read_dib_body(), write_pbm_image(), and write_xbm_image().

{ return (r*11+g*16+b*5)/32; }

int qGray

(

QRgb

rgb

)

[related]

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

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. Note that the alpha-channel is ignored.

Definition at line 58 of file qrgb.h.

{ return qGray(qRed(rgb), qGreen(rgb), qBlue(rgb)); }

QRgb [related]

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

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

See also:

QColor::rgb(), QColor::rgba()

Referenced by compress(), convert_ARGB_PM_to_ARGB(), convert_ARGB_PM_to_RGB(), convert_ARGB_to_ARGB_PM(), convert_RGB_to_Indexed8(), convertWithPalette(), embedData(), init_gray(), init_indexed(), main(), pnmscale(), qBrushDark(), qBrushLight(), qBrushSetAlphaF(), QColor(), qStoreColors(), qt_conv16ToRgb(), qt_get_rgb_val(), qt_write_dib(), query_colormap(), read_dib_body(), read_jpeg_image(), read_pbm_body(), read_xpm_body(), rotated270(), rotated90(), setNamedColor(), swapPixel01(), write_jpeg_image(), write_pbm_image(), and write_xpm_image().

---

Member Data Documentation

Spec QColor::cspec [private]

Definition at line 187 of file qcolor.h.

Referenced by blackF(), blueF(), convertTo(), cyanF(), dark(), fromCmyk(), fromCmykF(), fromHsv(), fromHsvF(), fromRgb(), fromRgbF(), getCmyk(), getCmykF(), getHsv(), getHsvF(), getRgb(), getRgbF(), greenF(), hueF(), invalidate(), isValid(), light(), magentaF(), operator<<(), operator=(), operator==(), operator>>(), QColor(), redF(), rgb(), rgba(), saturationF(), setBlue(), setBlueF(), setCmyk(), setCmykF(), setGreen(), setGreenF(), setHsv(), setHsvF(), setRed(), setRedF(), setRgb(), setRgba(), setRgbF(), toCmyk(), toHsv(), toRgb(), valueF(), and yellowF().

int QColor::alpha [private]

Returns the alpha color component of this color.

See also:

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

Definition at line 190 of file qcolor.h.

Referenced by PanelShape::animate(), TitleShape::animate(), QSvgAnimateColor::apply(), Q3SVGPaintEnginePrivate::applyStyle(), VariantDelegate::displayText(), QPixmap::fill(), QX11PaintEnginePrivate::fillPolygon_dev(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), QBrush::isOpaque(), qt_set_x11_resources(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes(), QX11PaintEngine::updateBrush(), and QX11PaintEngine::updatePen().

int QColor::red [private]

Returns the red color component of this color.

See also:

setRed(), redF(), getRgb()

Definition at line 191 of file qcolor.h.

Referenced by QSvgAnimateColor::apply(), Q3SVGPaintEnginePrivate::applyStyle(), ColorItem::ColorItem(), QAbstractFormBuilder::createProperty(), VariantDelegate::displayText(), QWindowsXPStyle::drawControl(), QAbstractTextDocumentLayout::drawInlineObject(), QWindowsStyle::drawPrimitive(), QPixmap::fill(), QCommonStyle::generatedIconPixmap(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), mergedColors(), BasicToolsPlugin::mouseMove(), PaintArea::mousePressEvent(), ColorItem::mousePressEvent(), operator<(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qt_set_x11_resources(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), QMngHandlerPrivate::setBackgroundColor(), Q3ColorDrag::setColor(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes(), and KAsteroidsView::showText().

int QColor::green [private]

Returns the green color component of this color.

See also:

setGreen(), greenF(), getRgb()

Definition at line 192 of file qcolor.h.

Referenced by QSvgAnimateColor::apply(), Q3SVGPaintEnginePrivate::applyStyle(), ColorItem::ColorItem(), QAbstractFormBuilder::createProperty(), VariantDelegate::displayText(), QWindowsXPStyle::drawControl(), QAbstractTextDocumentLayout::drawInlineObject(), QWindowsStyle::drawPrimitive(), QPixmap::fill(), QCommonStyle::generatedIconPixmap(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), mergedColors(), BasicToolsPlugin::mouseMove(), PaintArea::mousePressEvent(), ColorItem::mousePressEvent(), operator<(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qt_set_x11_resources(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), QMngHandlerPrivate::setBackgroundColor(), Q3ColorDrag::setColor(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes(), and KAsteroidsView::showText().

int QColor::blue [private]

Returns the blue color component of this color.

See also:

setBlue(), blueF(), getRgb()

Definition at line 193 of file qcolor.h.

Referenced by QSvgAnimateColor::apply(), Q3SVGPaintEnginePrivate::applyStyle(), ColorItem::ColorItem(), QAbstractFormBuilder::createProperty(), VariantDelegate::displayText(), QWindowsXPStyle::drawControl(), QAbstractTextDocumentLayout::drawInlineObject(), QWindowsStyle::drawPrimitive(), QPixmap::fill(), QCommonStyle::generatedIconPixmap(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), mergedColors(), BasicToolsPlugin::mouseMove(), PaintArea::mousePressEvent(), ColorItem::mousePressEvent(), operator<(), qdesigner_internal::QtGradientStopsWidget::paintEvent(), qt_set_x11_resources(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), QMngHandlerPrivate::setBackgroundColor(), Q3ColorDrag::setColor(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes(), and KAsteroidsView::showText().

ushort QColor::pad [private]

Definition at line 194 of file qcolor.h.

struct { ... } QColor::argb [private]

Referenced by fromRgb(), fromRgbF(), operator<<(), operator=(), operator==(), operator>>(), QColor(), and toRgb().

int QColor::hue [private]

Returns the hue color component of this color.

See also:

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

Definition at line 198 of file qcolor.h.

Referenced by qdesigner_internal::QtColorLinePrivate::checkColor(), QCleanlooksStyle::drawComplexControl(), QCleanlooksStyle::drawControl(), QCleanlooksStyle::drawPrimitive(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), qdesigner_internal::QtColorLinePrivate::pointFromColor(), qt_cleanlooks_draw_mdibutton(), qt_set_x11_resources(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), and qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes().

int QColor::saturation [private]

Returns the saturation color component of this color.

See also:

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

Definition at line 199 of file qcolor.h.

Referenced by QCleanlooksStyle::drawComplexControl(), QCleanlooksStyle::drawControl(), QCleanlooksStyle::drawPrimitive(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), qt_cleanlooks_draw_mdibutton(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), and qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes().

int QColor::value [private]

Returns the value color component of this color.

See also:

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

Definition at line 200 of file qcolor.h.

Referenced by QCleanlooksStyle::drawComplexControl(), QCleanlooksStyle::drawControl(), QCleanlooksStyle::drawPrimitive(), qdesigner_internal::QtColorLinePrivate::isMainPixmapValid(), qBrushSetAlphaF(), qt_cleanlooks_draw_mdibutton(), qt_set_x11_resources(), qdesigner_internal::QtColorLinePrivate::recreateMainPixmap(), qdesigner_internal::QtGradientStopsEditorPrivate::setColorSpinBoxes(), and qdesigner_internal::QtBrushPatternEditorPrivate::setColorSpinBoxes().

struct { ... } QColor::ahsv [private]

Referenced by dark(), fromHsv(), fromHsvF(), light(), and toHsv().

int QColor::cyan [private]

Returns the cyan color component of this color.

See also:

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

Definition at line 205 of file qcolor.h.

int QColor::magenta [private]

Returns the magenta color component of this color.

See also:

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

Definition at line 206 of file qcolor.h.

int QColor::yellow [private]

Returns the yellow color component of this color.

See also:

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

Definition at line 207 of file qcolor.h.

int QColor::black [private]

Returns the black color component of this color.

See also:

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

Definition at line 208 of file qcolor.h.

struct { ... } QColor::acmyk [private]

Referenced by fromCmyk(), fromCmykF(), and toCmyk().

union { ... } QColor::ct [private]

Referenced by alphaF(), blackF(), blueF(), cyanF(), dark(), fromCmyk(), fromCmykF(),