QConicalGradient Class Reference

\inmodule QtGui More...

#include <qbrush.h>

Inheritance diagram for QConicalGradient:

Collaboration diagram for QConicalGradient:

Public Member Functions
	QConicalGradient ()
	Constructs a conical with center at (0, 0) starting the interpolation at angle 0.
	QConicalGradient (const QPointF &center, qreal startAngle)
	Constructs a conical gradient with the given center, starting the interpolation at the given angle.
	QConicalGradient (qreal cx, qreal cy, qreal startAngle)
	Constructs a conical gradient with the given center (cx, cy), starting the interpolation at the given angle.
	~QConicalGradient ()
QPointF	center () const
	Returns the center of the conical gradient in logical coordinates.
void	setCenter (const QPointF &center)
	Sets the center of this conical gradient in logical coordinates to center.
void	setCenter (qreal x, qreal y)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the center of this conical gradient in logical coordinates to (x, y).
qreal	angle () const
	Returns the start angle of the conical gradient in logical coordinates.
void	setAngle (qreal angle)
Public Member Functions inherited from QGradient
	QGradient ()
	QGradient (Preset)
	~QGradient ()
Type	type () const
	Returns the type of gradient.
void	setSpread (Spread spread)
	Specifies the spread method that should be used for this gradient.
Spread	spread () const
	Returns the spread method use by this gradient.
void	setColorAt (qreal pos, const QColor &color)
	Creates a stop point at the given position with the given color.
void	setStops (const QGradientStops &stops)
	Replaces the current set of stop points with the given stopPoints.
QGradientStops	stops () const
	Returns the stop points for this gradient.
CoordinateMode	coordinateMode () const
void	setCoordinateMode (CoordinateMode mode)
InterpolationMode	interpolationMode () const
void	setInterpolationMode (InterpolationMode mode)
bool	operator== (const QGradient &gradient) const
	Returns true if the gradient is the same as the other gradient specified; otherwise returns false.
bool	operator!= (const QGradient &other) const

Additional Inherited Members
Public Types inherited from QGradient
enum	Type { LinearGradient , RadialGradient , ConicalGradient , NoGradient }
	Specifies the type of gradient. More...
enum	Spread { PadSpread , ReflectSpread , RepeatSpread }
	Specifies how the area outside the gradient area should be filled. More...
enum	CoordinateMode { LogicalMode , StretchToDeviceMode , ObjectBoundingMode , ObjectMode }
enum	InterpolationMode { ColorInterpolation , ComponentInterpolation }
enum	Preset {   WarmFlame = 1 , NightFade = 2 , SpringWarmth = 3 , JuicyPeach = 4 ,   YoungPassion = 5 , LadyLips = 6 , SunnyMorning = 7 , RainyAshville = 8 ,   FrozenDreams = 9 , WinterNeva = 10 , DustyGrass = 11 , TemptingAzure = 12 ,   HeavyRain = 13 , AmyCrisp = 14 , MeanFruit = 15 , DeepBlue = 16 ,   RipeMalinka = 17 , CloudyKnoxville = 18 , MalibuBeach = 19 , NewLife = 20 ,   TrueSunset = 21 , MorpheusDen = 22 , RareWind = 23 , NearMoon = 24 ,   WildApple = 25 , SaintPetersburg = 26 , PlumPlate = 28 , EverlastingSky = 29 ,   HappyFisher = 30 , Blessing = 31 , SharpeyeEagle = 32 , LadogaBottom = 33 ,   LemonGate = 34 , ItmeoBranding = 35 , ZeusMiracle = 36 , OldHat = 37 ,   StarWine = 38 , HappyAcid = 41 , AwesomePine = 42 , NewYork = 43 ,   ShyRainbow = 44 , MixedHopes = 46 , FlyHigh = 47 , StrongBliss = 48 ,   FreshMilk = 49 , SnowAgain = 50 , FebruaryInk = 51 , KindSteel = 52 ,   SoftGrass = 53 , GrownEarly = 54 , SharpBlues = 55 , ShadyWater = 56 ,   DirtyBeauty = 57 , GreatWhale = 58 , TeenNotebook = 59 , PoliteRumors = 60 ,   SweetPeriod = 61 , WideMatrix = 62 , SoftCherish = 63 , RedSalvation = 64 ,   BurningSpring = 65 , NightParty = 66 , SkyGlider = 67 , HeavenPeach = 68 ,   PurpleDivision = 69 , AquaSplash = 70 , SpikyNaga = 72 , LoveKiss = 73 ,   CleanMirror = 75 , PremiumDark = 76 , ColdEvening = 77 , CochitiLake = 78 ,   SummerGames = 79 , PassionateBed = 80 , MountainRock = 81 , DesertHump = 82 ,   JungleDay = 83 , PhoenixStart = 84 , OctoberSilence = 85 , FarawayRiver = 86 ,   AlchemistLab = 87 , OverSun = 88 , PremiumWhite = 89 , MarsParty = 90 ,   EternalConstance = 91 , JapanBlush = 92 , SmilingRain = 93 , CloudyApple = 94 ,   BigMango = 95 , HealthyWater = 96 , AmourAmour = 97 , RiskyConcrete = 98 ,   StrongStick = 99 , ViciousStance = 100 , PaloAlto = 101 , HappyMemories = 102 ,   MidnightBloom = 103 , Crystalline = 104 , PartyBliss = 106 , ConfidentCloud = 107 ,   LeCocktail = 108 , RiverCity = 109 , FrozenBerry = 110 , ChildCare = 112 ,   FlyingLemon = 113 , NewRetrowave = 114 , HiddenJaguar = 115 , AboveTheSky = 116 ,   Nega = 117 , DenseWater = 118 , Seashore = 120 , MarbleWall = 121 ,   CheerfulCaramel = 122 , NightSky = 123 , MagicLake = 124 , YoungGrass = 125 ,   ColorfulPeach = 126 , GentleCare = 127 , PlumBath = 128 , HappyUnicorn = 129 ,   AfricanField = 131 , SolidStone = 132 , OrangeJuice = 133 , GlassWater = 134 ,   NorthMiracle = 136 , FruitBlend = 137 , MillenniumPine = 138 , HighFlight = 139 ,   MoleHall = 140 , SpaceShift = 142 , ForestInei = 143 , RoyalGarden = 144 ,   RichMetal = 145 , JuicyCake = 146 , SmartIndigo = 147 , SandStrike = 148 ,   NorseBeauty = 149 , AquaGuidance = 150 , SunVeggie = 151 , SeaLord = 152 ,   BlackSea = 153 , GrassShampoo = 154 , LandingAircraft = 155 , WitchDance = 156 ,   SleeplessNight = 157 , AngelCare = 158 , CrystalRiver = 159 , SoftLipstick = 160 ,   SaltMountain = 161 , PerfectWhite = 162 , FreshOasis = 163 , StrictNovember = 164 ,   MorningSalad = 165 , DeepRelief = 166 , SeaStrike = 167 , NightCall = 168 ,   SupremeSky = 169 , LightBlue = 170 , MindCrawl = 171 , LilyMeadow = 172 ,   SugarLollipop = 173 , SweetDessert = 174 , MagicRay = 175 , TeenParty = 176 ,   FrozenHeat = 177 , GagarinView = 178 , FabledSunset = 179 , PerfectBlue = 180 ,   NumPresets }
Related Symbols inherited from QGradient
	QGradientStop
	Typedef for std::pair<\l qreal, QColor>.
	QGradientStops
	Typedef for QList<QGradientStop>.

Detailed Description

\inmodule QtGui

The QConicalGradient class is used in combination with QBrush to specify a conical gradient brush.

Conical gradients interpolate interpolate colors counter-clockwise around a center point.

{Screenshot that shows an example of what a conical gradient looks like}

The colors in a gradient is defined using stop points of the QGradientStop type, i.e. a position and a color. Use the QGradient::setColorAt() or the QGradient::setStops() function to define the stop points. It is the gradient's complete set of stop points that describes how the gradient area should be filled. If no stop points have been specified, a gradient of black at 0 to white at 1 is used.

In addition to the functions inherited from QGradient, the QConicalGradient class provides the angle() and center() functions returning the start angle and center of the gradient.

Note that the setSpread() function has no effect for conical gradients. The reason is that the conical gradient is closed by definition, i.e. the conical gradient fills the entire circle from 0 - 360 degrees, while the boundary of a radial or a linear gradient can be specified through its radius or final stop points, respectively.

See also

QLinearGradient, QRadialGradient, {painting/gradients}{The Gradients Example}

Definition at line 467 of file qbrush.h.

Constructor & Destructor Documentation

QConicalGradient() [1/3]

QConicalGradient::QConicalGradient

(

)

Constructs a conical with center at (0, 0) starting the interpolation at angle 0.

See also

QGradient::setColorAt(), setCenter(), setAngle()

Definition at line 2497 of file qbrush.cpp.

QConicalGradient() [2/3]

QConicalGradient::QConicalGradient	(	const QPointF &	center,
		qreal	angle )

Constructs a conical gradient with the given center, starting the interpolation at the given angle.

The angle must be specified in degrees between 0 and 360.

See also

QGradient::setColorAt(), QGradient::setStops()

Definition at line 2459 of file qbrush.cpp.

QConicalGradient() [3/3]

QConicalGradient::QConicalGradient	(	qreal	cx,
		qreal	cy,
		qreal	angle )

Constructs a conical gradient with the given center (cx, cy), starting the interpolation at the given angle.

The angle must be specified in degrees between 0 and 360.

See also

QGradient::setColorAt(), QGradient::setStops()

Definition at line 2477 of file qbrush.cpp.

~QConicalGradient()

QConicalGradient::~QConicalGradient

(

)

Definition at line 2485 of file qbrush.cpp.

Member Function Documentation

angle()

qreal QConicalGradient::angle

(

)

const

Returns the start angle of the conical gradient in logical coordinates.

See also

stops()

Definition at line 2553 of file qbrush.cpp.

center()

QPointF QConicalGradient::center

(

)

const

Returns the center of the conical gradient in logical coordinates.

See also

stops()

Definition at line 2514 of file qbrush.cpp.

setAngle()

void QConicalGradient::setAngle

(

qreal

angle

)

Since

4.2

Sets angle to be the start angle for this conical gradient in logical coordinates.

See also

angle()

Definition at line 2569 of file qbrush.cpp.

setCenter() [1/2]

void QConicalGradient::setCenter

(

const QPointF &

center

)

Sets the center of this conical gradient in logical coordinates to center.

See also

center()

Definition at line 2539 of file qbrush.cpp.

setCenter() [2/2]

void QConicalGradient::setCenter ( qreal x, qreal y )

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the center of this conical gradient in logical coordinates to (x, y).

See also

center()

Definition at line 477 of file qbrush.h.

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

• qtbase/src/gui/painting/qbrush.h (3bbc9e29ef59683351cf35c19a8bd4a030615c64)
• qtbase/src/gui/painting/qbrush.cpp (fc00dca1c388ee04401d2e391f74b38d42c177df)